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Author: Donna Wentworth

Tesla Powerwall 3 vs Anker Solix X1: Which Battery Should You Choose?

You’ve just been quoted a battery system, and it’s not the one you expected. Maybe it’s the Anker SOLIX X1 — a name you’ve never heard of. Or perhaps it’s the Tesla Powerwall 3 — which you have heard of, but you’re wondering if it’s still worth the price tag.

No matter which option you’re considering, this is a significant investment — one that affects your household energy costs, your backup power during blackouts, and how future-proof your solar setup will be over the next decade. It’s not just about specs on a datasheet — it’s about making a decision you feel confident with.

At Lenergy, we install both the Anker SOLIX X1 and the Tesla Powerwall 3. We’re not here to push one over the other — because the best battery depends on your needs. What we’re here to do is give you a clear, side-by-side comparison so you can understand the real differences.

In this guide, you’ll learn how each system performs — from backup power to safety, to cost, to what they’re actually like to live with. By the end, you’ll know exactly which battery suits your setup best — and why.

Why Compare the Anker Solix X1 and Tesla Powerwall 3?

If you’re researching solar batteries in 2025, these two names keep coming up: Anker Solix X1 and Tesla Powerwall 3.

On the surface, they seem worlds apart. One’s from a globally famous electric car company. The other? A newcomer to home batteries, best known (until recently) for making power banks and phone chargers.

So why are solar installers — including Lenergy — offering both?

Simple: they each solve different homeowner problems. And they both bring serious capability to the table.

Tesla Powerwall 3 battery installed outside of home with solar panels on rooftop.

The Tesla Powerwall 3 is sleek, powerful, and all-in-one. It has a built-in inverter, high continuous output, and backup capacity to run your whole home — all backed by a name you know. Find more information on the Tesla Powerwall 3 here.

The Anker Solix X1 is modular, flexible, and safety-first. It’s more affordable, scales up or down, and is built for harsh Aussie conditions. It’s a serious competitor, even if you haven’t heard of it yet. See our recent article on the Anker Solix X1 for more information.

Anker Solix X1 installed outside in a coastal town with view of the ocean.

If you’ve been quoted one and not the other, or you’re torn between the two, this comparison is for you. It’s not about which brand is “better” — it’s about which battery is better for you.

Specs at a Glance: Anker Solix X1 vs Tesla Powerwall 3

FeatureAnker Solix X1 (datatsheet)Tesla Powerwall 3 (datasheet)
Usable Capacity5–30 kWh modular (AC), up to 90–180 kWh (hybrid)13.5 kWh fixed
Power Outputvaries by inverter 3 kW (5 kWh) to 6 kW (10 kWh+), hybrid: up to 12 kWPotential DC power up to 19.5 kW
Charging RateMatches output; depends on config5 kW when AC coupled and up to 8 kW when DC Coupled
Solar InputHybrid version supports PV input (up to 18 kW)20 kW with 3 MPPTs
ModularityYes — easily scalableNo — fixed size, expansion via separate “packs”
CEC Approved?Yes Yes
MonitoringLocal display + app (depends on model)Tesla app (same as Powerwall 2)
Cooling & Noise40 db (quieter)Can be noisy typically < 50 db with a maximum of 62 db
DimensionsVaries with setup1105 × 609 × 193 mm, 130 kg
Round-Trip Efficiency90%+ (varies by inverter)89%

How They Handle Backup Power and Blackouts

FeatureSolix X1 (Hybrid)Powerwall 3
Backup PowerYesYes
Solar Charging During BlackoutYes (Hybrid only)Yes
Whole-Home BackupDepends on configYes (single-phase only)
Blackout SwitchoverFastSeamless

Key Takeaways:

  • The Powerwall 3 is built for full-home backup and solar charging in a blackout.
  • The Solix X1 hybrid offers similar protection, but AC-coupled models cannot recharge until the grid is restored.
Anker Solix X1 Battery

Safety, Durability & Outdoor Performance

FeatureSolix X1Powerwall 3
ChemistryLithium-ion PhosphateLithium-ion Phosphate
Fire RiskLowLow
Outdoor RatingIP65/IP66IP55
Operating Temp–20°C to +55°C–20°C to +50°C
Corrosion ResistanceC5-M rated (warranty excludes rust)Flood resistant to 0.6m
NoiseQuiet (passive cooling)Noisy fans (up to 62 dB)

Bottom Line:
Solix is safer, quieter, and better suited to outdoor or coastal use. Powerwall 3 is tough, but not silent — and may need a more considered install location.

Monitoring, Software & User Experience

FeatureSolix X1Powerwall 3
Mobile AppYes (functional, improving)Yes (polished, reliable)
Local DisplayYesNo
Real-Time MonitoringYesYes
Smart AutomationNoYes (Opticaster)
NotificationsYes (varies by config)Yes

Bottom Line:
Want hands-on control or don’t love apps? Solix wins. Want automation, smooth interfaces, and smart notifications? Tesla leads.

How Much Do They Cost in 2025?

System SizeSolix X1 (Hybrid)Powerwall 3
13.5–15 kWh$9,000$13,929.06
Modular?YesNo
Includes Inverter?Hybrid model onlyYes
Rebate Eligible?YesYes
Expansion Cost $1,490 for an additional 5 kWh module$6,050 for an additional 13.5 kWh powerwall

Bottom Line:
Solix is more flexible and affordable — especially if you already have solar. Powerwall 3 makes more sense for new installs or those prioritising simplicity.

Anker Solix X1 Battery installed outside of home

Which Battery Is Right for You?

Go Anker Solix X1 If:

  • You’re looking for a more affordable option
  • You want to scale over time
  • You already have solar
  • You want modular design and lower upfront cost
  • You care about Lithium-ion Phosphate safety
  • You live in a coastal or hot climate
  • You want a physical display (no app needed)

Go Tesla Powerwall 3 If:

  • You don’t mind paying premium prices
  • You want blackout protection
  • You want a new solar + battery system
  • You need seamless whole-home backup
  • You value Tesla’s polished app and automation
  • You trust the brand’s long-standing performance
  • You want to join a VPP or export to grid efficiently
Lenergy office staff at office located in Moss Vale, NSW

Final Thoughts: Trust, Flexibility, and What Really Matters

Choosing a home battery isn’t just about specs — it’s about finding the system that fits your goals, budget, and peace of mind.

The Tesla Powerwall 3 gives you a powerful, premium experience. The Anker Solix X1 offers flexibility, value, and quiet reliability.

At Lenergy, we install both. Because the right battery isn’t the one with the flashiest name — it’s the one that actually suits you.

Ready to compare battery options for your home?

Lenergy Achieves Sigenergy Gold Installer Status: What It Means for You

Lenergy has recently been recognised as a Sigenergy Gold Installer — and while that might sound like an industry label, it’s something that brings real value to homeowners considering a battery system.

The Gold Installer status is part of Sigenergy’s official partner program. It’s awarded to installation companies who complete their certified training, meet installation quality standards, and actively support Sigenergy systems in the field.

In other words, it’s not a badge for signing up — it’s recognition for doing the work properly.

For you, this means the team installing your battery:

  • Has completed official product training
  • Understands how to configure the system for performance and safety
  • Has been vetted by the manufacturer for quality and ongoing support

In an industry where not all installations are equal, this kind of third-party recognition helps take the guesswork out. You know the product is solid — and now, you know the installer is too.

Sigenergy Gold Installer Status: Why It Matters

As part of our involvement with Sigenergy, our team was recently invited to visit their global headquarters and factory in Shanghai, China.

It was an opportunity to meet with the people behind the product, including Sigenergy’s Managing Director for Australia and New Zealand, Will Hall. Our team took a close-up view of how their systems are designed, tested, and supported. That level of transparency gave us even more confidence in the technology we’re installing — and reinforced why getting the installation right is key.

In short, the trip reinforced why we chose to work with Sigenergy — and why we feel confident bringing their battery systems into homes and businesses across Australia.

Working with a Sigenergy Gold Installer like Lenergy means you’re getting a system that’s not just technically capable, but properly installed and supported. That distinction can make a big difference in how the system performs day to day — and how long it lasts.

Behind the Tech: What Makes Sigenergy Batteries Different?

Sigenergy might be a newer name in the Australian market, however globally, they’ve built a strong reputation around doing the fundamentals well — and building with the future in mind.

Their battery systems are designed to do more than just store excess solar. They’re built to help you use your energy more efficiently, manage your home during outages, and scale up as your needs change.

See our recent article on Sigenergy Is No.1 in Australia Again – 3 Months in a Row

Here are a few features that stand out:

Modular and Scalable

Sigenergy’s batteries are modular, which means you can start with the capacity you need now and add more later — without having to replace the entire system. This is ideal for growing families or households planning to add electric vehicles or other major loads in future.

Smarter Energy Management

Each system is backed by smart software that monitors solar generation, home energy use, and battery charge levels in real-time. It can automatically shift when and how energy is used — helping you rely less on the grid and make better use of your solar.

Designed With Safety in Mind

Sigenergy uses lithium iron phosphate (LFP) battery chemistry — widely considered the safest option for home storage. Their systems also include built-in protection features like thermal monitoring and short-circuit prevention, offering peace of mind without extra complexity.

Clear, Easy-to-Use Monitoring

Through the mySigen app, you can see exactly how much power you’re generating, storing, using, and sending back to the grid — all in real time. It gives you full visibility and control, even if you’re not a tech expert.

AI powered home battery - Sigenergy

Is a Sigenergy Battery Right for Your Home?

Not every home needs a battery. But for many households, adding storage is the next step in getting more value from solar — especially with feed-in tariffs dropping and energy prices remaining unpredictable.

See more information on our recent blog Is Sigenergy Worth the Hype? Everything You Need To Know

So, is a Sigenergy battery the right fit for you?

Here are a few things to consider:

You Use Power in the Evenings

If you’re running appliances, heating or cooling, or EV charging after dark, storing your excess solar during the day can help you avoid high evening grid rates.

Bidirectional EV Charger

You Want Protection from Blackouts

Sigenergy systems can be configured to keep key appliances running during an outage. This kind of backup power is especially useful in areas with unreliable grid supply or for households who can’t afford to lose power unexpectedly.

You Want Room to Grow

As Sigenergy systems are modular, it’s easy to scale your storage up over time. Whether you’re planning to get an electric vehicle or just want to future-proof your system, the flexibility is there without having to start over.

You’re Looking for Long-Term Value

Sigenergy sits in the mid-to-premium price ranges. That positions it below brands like Tesla, while still offering smart energy management, strong safety features, and a solid user experience.

Not every household needs all the features Sigenergy offers — and that’s okay. However, if you’re planning for the long term and want a system that’s smart, scalable, and properly supported, it’s well worth considering.

Why Choosing the Right Installer Still Matters Most

Battery systems are getting smarter. But without the right installation, even the most advanced technology can fall short.

A poorly configured battery might not charge properly. It might fail to deliver backup power when you need it. Or it might quietly underperform for years — costing you money without you even realising it.

That’s why choosing the right installer matters just as much as the brand you choose.

As a Sigenergy Gold Installer, Lenergy has been recognised for doing the job properly — through training, real-world performance, and a commitment to long-term support. It means your battery will be installed to the manufacturer’s standards, and supported by a team that understands how to get the most from it.

Whether you’re just starting to research solar batteries or comparing a few final options, we’re here to help you make a clear, confident decision — no pressure, just honest guidance.

Lenergy award for winning business of the year

Thinking About Adding a Sigenergy Battery?

If you’d like to explore whether a Sigenergy system is right for your home, get in touch with our team. We’ll help you weigh up the options, understand the costs, and decide if it’s the right time to invest.

Anker SOLIX X1 Battery Review: Is It the Right Choice for Your Home in 2025?

You’ve just been quoted a battery you’ve never heard of — the Anker SOLIX X1. You’re probably thinking: “Why this brand? Is it reliable? And why aren’t they offering me a Tesla or something I recognise?”

That’s a fair reaction. Especially when you’re making a five-figure investment that affects your power bills, backup protection, and energy independence for years to come.

At Lenergy, we install the Anker SOLIX X1 because we believe it’s one of the most flexible and safety-first batteries now available in Australia. However, we also know that trust isn’t built with a quote — it’s built with clear, honest answers.

In this guide, you’ll learn exactly what the Anker SOLIX X1 does well, where it may fall short, and who it’s the right fit for. No hype, no jargon — just a straightforward review to help you decide if this system belongs in your home.

Who Makes the Anker SOLIX X1 — And Can You Trust Them?

  • Anker Innovations is a Chinese electronics manufacturer, originally based in Shenzhen and now headquartered in Changsha, Hunan, known for products like power banks, chargers, security cameras and earbuds.
  • Anker Innovations Australia Pty Ltd was established in 2011, offering local presence, support, and distribution partnerships (including MMEM Greentech, One Stop Warehouse and BlueSun Group), backed by a multinational electronics brand with strong safety credentials and growing investment in the Australian market.
  • In 2023, they launched their home energy storage sub‑brand, SOLIX.The Anker SOLIX X1 received Clean Energy Council approval for AC‑coupled models in 2024, and the hybrid—single-phase and three-phase—models were certified in 2025, making them eligible for rebates and installation across Australia. 

What Sizes and Models Are Available in Australia?

The Anker SOLIX X1 offers both AC-coupled and hybrid (DC-coupled) versions:

  • AC models come in 5 kWh modules and you can stack 3 modules in one stack. You can parallel to 30 kWh using multiple stacks (1–6 battery modules),
  • Single-phase hybrid available in a 5kW inverter currently and supports up to 3 systems in parallel (up to 90 kWh/18 kW).
  • Three-phase hybrid  available in 10kW and 12kW currently and scales to 180 kWh/72 kW—ideal for large properties or small businesses.
  • Built for extremes: LiFePO₄ safety chemistry, IP65 (AC)/IP66 (hybrid), –20 °C to +55 °C, and C5-M corrosion rating.

How Does the Anker X1 Compare to Sigenergy & ESY?

FeatureAnker SOLIX X1Sigenergy SigenStorESY Sunhome (HM6)
Battery ChemistryLiFePO₄ (safe, long life)LiFePO₄ (safe, long life)LiFePO₄ (safe, long life)
Usable Capacity5–30 kWh modular5.2 kWh or 7.8 kWh per module, stackable up to ~48 kWh 5.12 kWh modules, expandable up to ~30.72 kWh 
Power Output3 kW (5 kWh) to 6 kW (10 kWh+)Max charge/discharge ~2.5–4 kW (peak up to ~3.75–6 kW) Built-in 6 kW hybrid inverter (single-phase) 
ScalabilityYes (modular, AC or hybrid)Yes — modular stacking up to 48 kWh; parallel stacking also possibleYes — modular up to ~30.72 kWh 
CEC Approved?Yes — for AC and hybrid modelsYes — sold and installed in Australia Yes — HM6 series approved for use in Australia 
Off‑Grid / Solar in Blackout?Hybrid only (AC‑coupled can’t recharge from solar during blackout)Yes — hybrid inverter and stacked design support solar-charging during blackout Built-in hybrid inverter; provides backup, though four‑hour cycle on full stack may be slow to recharge 
Installed Cost (approx.)From $9,000 for 15kWhFrom $12,000 for 16kWhFrom $9,210 for 16kWh

How Safe and Durable Is the Anker SOLIX X1 Battery?

When it comes to battery storage, safety isn’t a luxury — it’s a must. And in Australia, where systems are often installed outdoors and exposed to heat, salt air, and storms, long-term durability matters just as much.

Here’s how the Anker SOLIX X1 stacks up.

Battery Chemistry: LiFePO₄

The SOLIX X1 uses lithium iron phosphate (LiFePO₄) chemistry — widely regarded as the safest lithium battery type available:

  • Less prone to thermal runaway or fire risk
  • More stable in high temperatures
  • Capable of more charge cycles — often 6,000+

For households with kids, pets, or vulnerable family members — or if the battery will be installed near living spaces — this is a big plus.

Outdoor-Ready: Built for Aussie Conditions

Whether you’re in a suburban street, rural property, or coastal town, the Anker SOLIX is built to handle tough environments:

  • IP65 (AC) and IP66 (Hybrid) ratings for dust and water resistance
  • Operating range from –20°C to +55°C
  • C5-M corrosion rating — suitable for installation near the coast. It must be installed at least 300 m (984 ft) away from the coast specifically.

That said, while the unit can be installed outdoors, the warranty does not cover corrosion or rust. So if you’re installing in a salty coastal environment, consider giving it some physical cover (e.g. under eaves or in a battery enclosure) for peace of mind.

Warranty

  • 10-year warranty on the battery
  • 10-year warranty on the inverter module
  • These are two separate warranties, so a failure in one doesn’t void the other.

Anker also offers local support through its Australian distribution network, and while they’re newer to this market, they have a track record of fast warranty support in their consumer electronics range. See here for further information on Ankers warranty policy.

How Much Does the Anker SOLIX X1 Cost in 2025?

Cost is often the make-or-break factor when choosing a battery — especially if you’re comparing it against more familiar options. The Anker SOLIX X1 offers a competitive price point, particularly given its modular design, safety features, and flexible configurations.

Estimated Installed Price Range

Depending on your system size, installer, and whether you’re going with AC or hybrid:

  • 15kWh system (3 modules) (AC-coupled): from around $9,000-$10,500 installed
  • Additional 5kWh Battery Module $1,484.31
  • Additional 10kWh Battery Module $2,589.81
  • Additional 15kWh Battery Module $3,733.81

    *all the above prices are inclusive of the current Federal Battery Rebate as of 2025
  • Hybrid systems may add an additional $1,000–$2,000 for inverter integration and additional configuration. As well as the additional solar that you can pair with this system

These are indicative prices and may vary based on site requirements, electrical upgrades, or installation difficulty.

Rebate Compatibility

Yes — the SOLIX X1 is Clean Energy Council approved, making it eligible for:

  • The federal battery rebate (as of July 2025)
  • The Evergen VPP incentive (Amber support)

Rebate amounts depend on battery size, household income, and your participation in a Virtual Power Plant (VPP) if applicable. Your installer can guide you on eligibility and help apply. Contact us at Lenergy to discuss your options.

Who Is the Anker SOLIX X1 Best Suited For — And Who Might Want to Look Elsewhere?

The Anker SOLIX X1 isn’t a one-size-fits-all solution — and that’s exactly the point. It’s designed to be flexible, but that doesn’t mean it’s the right fit for everyone. Here’s who it suits best… and who may want to consider other options.

You’ll Likely Benefit If…

  • You want to start small and scale later.
    The modular design means you can begin with a single 5kWh battery and add more over time without replacing your whole system.
  • You already have solar installed.
    The AC-coupled version integrates cleanly with existing systems — no need to change your inverter.
  • You’re planning a new solar + battery system.
    The hybrid (DC) model is more efficient and enables solar charging during blackouts — a major plus for future-proofing.
  • You live in a coastal or hot climate.
    With high temperature tolerance, C5-M corrosion resistance, and IP65/IP66 ratings, the SOLIX is built for harsh Aussie conditions.
  • You want an affordable, safety-focused alternative to Signenergy.
    The use of LiFePO₄ chemistry means better thermal stability and longer life, often at a lower cost than NMC-based batteries.
  • You’re interested in blackout protection.
    Fast switchover and solid output (6kW+) make it practical for powering essential appliances.
  • You don’t like using apps or computers and would rather just walk over to the battery system to see the display of system charge and performance 

You Might Look Elsewhere If…

  • You want brand familiarity over features.
    If you’re only comfortable with names like Tesla or Sigenergy, Anker’s newer presence in the Aussie battery scene might not offer the peace of mind you’re after — yet.
  • You need more than 30kWh AC capacity today.
    While technically expandable, the CEC currently lists AC models up to 30kWh. If you need a larger off-grid-ready AC system immediately, a larger Sigenergy stack may be more suitable.
  • You’re expecting a battery to recharge from solar during a blackout — but you’ve chosen an AC-coupled setup.
    Only the hybrid version supports solar recharging when the grid is down. This matters if you live in a rural area or experience extended outages.

Final Word: Should You Consider the Anker SOLIX X1 for Your Home?

If you’re looking for a modular, safe, and future-ready home battery that doesn’t carry a premium price tag, the Anker SOLIX X1 is a standout option. It offers serious flexibility, LiFePO₄ safety, blackout protection, and compatibility with both existing and new solar systems.

Yes — it may be a newer name in the Australian battery market. But with Clean Energy Council approval, local support, and performance that stacks up against better-known brands, it’s a battery we trust and recommend to the right homeowners.

At Lenergy, we install the Anker SOLIX X1 across New South Wales and work closely with you to ensure your battery system is sized correctly, installed to Australian standards, and backed by expert support — before and after it’s switched on.

Ready to get a tailored quote or compare battery options for your home?

Get in touch with the Lenergy team today. We’ll help you find the right battery — even if it’s not the one you expected.

The team at Lenergy receiving a local business award in the Southern Highlands for Business of the Year,

Will You Miss Out on the Battery Rebate While Waiting for Installation?

Will You Miss Out on the Battery Rebate While Waiting for Installation? With battery demand at an all-time high, this is the question every solar homeowner should be asking.

The short answer? Yes — you might, if you leave it too late.

The federal battery rebate drops in value on 1 January 2026. That means your system needs to be fully installed and signed off before the end of December to qualify for the maximum rebate.

Installers are already booking well into November and December. If you wait until late in the year to get started, you could miss the deadline — not because you weren’t eligible, but because your installer simply couldn’t fit you in.

To avoid that, the best move is to start now: get a quote, confirm availability, and lock in your install date early.

This article will help you get real clarity on battery install timelines in 2025 — what’s causing the delays, what you can expect, and most importantly, what you can do now to avoid getting stuck in a queue.

Team member from Lenergy installing a Sigenergy battery

The Battery Rebate Cut-Off Is Closer Than You Think

The new Federal Battery Rebate has made home batteries significantly more affordable — and therefore the demand is surging. However the rebate drops in value every year until it phases out in 2030. That’s why thousands of homeowners are now racing to get their systems installed before 31 December 2025 to lock in the maximum savings. This has created a clear bottleneck — with limited installer capacity, long queues, and tighter stock availability the closer we get to the deadline.

If you’re thinking about adding a battery, the best time to act is September, or at the very latest, October 2025. Waiting until later in the year could mean longer queues, fewer choices, and less money back in your pocket.

Read through our recent article here to find out more information on the Federal Battery Rebate.

What Factors Affect How Fast You Can Get a Battery Installed?

Two things determine how quickly your battery gets installed: battery availability and installer workload.

Some battery models are in higher demand than others, and stock can run short — especially as rebate deadlines approach. On top of that, many installers are already booked out weeks, even months in advance, with limited capacity left for the year.

If you’re hoping to install before the end-of-year rebate cut-off, both of these factors matter.

team member from Lenergy installing a Sungrow battery on home exterior in Moss Vale

How Long Is the Wait for a Home Battery Right Now?

At Lenergy, we’re currently booking battery installs into late November and December, with only a handful of slots left between now and then. Availability depends on which battery model and system size you choose — some options have quicker turnaround times than others. If you’re aiming to get installed before the rebate drops on 1 January, now’s the time to secure your spot.

If You’re Thinking About a Battery, Don’t Wait to Ask

If you’re considering a battery — or just want to know if your home’s a good fit — now’s the time to start the conversation. With rebate values dropping after December and installer calendars filling fast, waiting could cost you in both money and time.

At Lenergy, we’re happy to talk you through your options, give honest timeframes, and help you choose a battery that suits your budget, timeline, and home setup.

Can You Sell Your Extra Solar Power to the Grid — And Is It Worth It?

You’ve got solar panels on your roof and, on sunny days, they produce more power than your home can use. In most cases, that extra electricity is sent to the grid — and your energy retailer pays you a credit for it, called a feed-in tariff (FiT).

Sounds simple enough, However, there’s more to it than just “sell your power, get paid.” Your ability to export is shaped by network rules, meter settings, and even the cables running down your street. If you’re on a single-phase connection, you’ll often be limited to exporting a maximum of 5kW at any one time. Three-phase homes can sometimes export more — up to 5kW or even 10kW per phase — but this depends on your local network operator. In some areas with voltage rise issues, households have been set to zero export, meaning they’re not allowed to send anything back at all.

On top of that, FiT rates vary wildly between states and retailers, and new two-way pricing tariffs — like those from Ausgrid and Essential Energy — are changing how retailers value your exports throughout the day. Add in a few misleading headlines about “sun taxes” and it’s no wonder many people are unsure if exporting solar is even worth it anymore.

We’ve spent years helping Australian homeowners make sense of solar exports — from understanding feed-in tariffs and export limits to weighing up whether a battery or Virtual Power Plant (VPP) offers better value

In this article, you’ll learn exactly how selling your extra solar power works in 2025, what you can realistically earn, and how to decide whether exporting, storing, or shifting your usage is the smartest move for your home.

What Is a Feed-in Tariff (FiT)?

A feed-in tariff (FiT) is the rate your energy retailer pays you for each kilowatt-hour (kWh) of electricity your solar system exports to the grid. It’s shown on your electricity bill as a credit, which is deducted from the amount you owe for the power you’ve imported from the grid.

Who sets the rate?

  • In most states, the government sets a benchmark or minimum rate, but your actual FiT is decided by your retailer. (eg AGL, Origin, Redenergy, Alinta Energy etc)
  • Some retailers offer higher rates to attract solar customers, while others stick close to the minimum.

Fixed vs time-varying FiTs

  • Fixed FiT: The same rate is paid for every kWh you export, no matter the time of day.
  • Time-varying FiT: Rates change depending on when you export. You might get a higher rate in the late afternoon or early evening when demand is high, and a lower rate during the middle of the day when the grid is flooded with solar.

Why FiTs are lower than the price you pay for power

You might pay 30–50c/kWh to buy electricity from the grid but only get 3–10c/kWh for what you export. That’s because FiTs are based on the wholesale value of electricity at the time of export — which is often low during sunny midday hours when solar supply is abundant.

2025 Feed-in Tariff Rates by State

Here’s how much solar households can expect to earn per kilowatt-hour (kWh) exported to the grid in 2025—but remember, actual rates vary depending on your state, postcode, and retailer.

State / TerritoryApprox. FiT Range (2025)Notes
NSW4.8–7.3¢/kWhIPART benchmarks for all-day flat rates. Retailers typically offer between 4–10c/kWh, depending on tiered daily thresholds.
Victoria0.04¢/kWhESC has droped the minimum FiT from 3.3c to just 0.04c as of 1 July 2025.
Queensland5–10¢/kWhNo mandatory minimum. Some retailers are offering up to 12¢/kWh bonus rates; legacy high FiTs (up to 44c) remain for early adopters.
South Australia5–12¢/kWhRetailers set their own rates. Top offers are around 10–12c for limited daily export caps.
WA10¢ (evening), 2.5¢ (off-peak)Time-of-use FiTs from Synergy, with significantly higher rates during 3–9 pm.
Other states/territories (ACT, TAS, NT)Varies—typically 5–10¢/kWhRetailer-determined, with some legacy high-rate schemes still active.

What about two-way tariffs — a.k.a. the so-called “Sun Tax”?

From July 2025, Ausgrid  and Endeavour Energy’s network in NSW introduced a new two-way pricing tariff. Some media outlets have labelled this a “Sun Tax”, however that description is misleading. It’s not a Government tax on households. Instead, it’s a pricing mechanism applied to electricity retailers, aimed at managing the grid more fairly and efficiently as solar uptake continues to grow.

Why it was introduced

Efficient use of the network — Grids were originally built for one-way power flow (from power stations to homes). With more rooftop solar than ever, the grid now has to handle energy flowing both ways. Two-way pricing encourages exports when the grid needs them, and discourages them when it doesn’t.

Fairer cost sharing — Previously, the costs of managing heavy daytime solar exports were spread across all electricity users — including those without solar. Two-way pricing allocates these costs more fairly to retailers, who may then adjust their solar plans.

Grid stability — Midday solar oversupply can overwhelm the network. By applying small charges for excess exports during those hours and offering rewards in the late afternoon/evening, Ausgrid reduces strain and helps avoid costly infrastructure upgrades.

Future readiness — With solar numbers still growing, two-way tariffs are designed to prepare the grid for even higher levels of rooftop solar in years to come.

How it works

Retailers are charged, not households directly. Ausgrid applies network export charges to retailers during the midday solar ‘glut’ and offers credits for evening exports.

Ausgrid charging/export model:

  • Charge: 1.2 c/kWh for exports between 10 am–3 pm.
  • Reward: 2.3 c/kWh for evening exports (4–9 pm).
  • Includes a “free threshold” — a small export cap you can send without being charged.

Essential Energy in regional NSW has introduced its own two-way pricing as of 1 July 2025, allowing for both charges and rebates depending on timing and export volume.

  • Retailers decide how to pass this on. Some may slightly reduce FiTs; others might adjust daily supply or usage charges instead.
  • Free threshold. Most households can export a set daily amount without any impact. Only exports above this threshold, at low-value midday times, are affected.
  • Incentives for useful exports. Exports between roughly 4–9 pm may attract higher credits if your retailer passes these on.
  • For most households, the financial effect of two-way tariffs is modest—but they do highlight another reason why using solar energy yourself (rather than exporting it) can be more cost-effective.

What it means for you

  • In the short term, many customers won’t notice a big change, especially if their retailer keeps FiTs flat.
  • Over time, expect retailers to shift their solar plans: lower credits at midday, higher credits in the evening.
  • West-facing solar panels or a battery that can discharge during peak times are well placed to take advantage of these changes.

Why it matters

Two-way pricing reflects a broader shift in solar economics. The focus is moving from earning money through daytime exports to maximising self-consumption and evening exports. By using more of your own solar during the day, or storing it in a battery, you’ll save more on your bill and help keep the grid stable for everyone.

Can You Make a Profit from Selling Solar Power to the Grid?

For most Australian households, selling excess solar power to the grid is more about reducing your electricity bill than making a meaningful profit. The maths comes down to two key points:

  1. You buy electricity for much more than you sell it
    • Typical purchase price from the grid: 30–50¢/kWh
    • Typical feed-in tariff in 2025: 3–10¢/kWh

That means every kWh you use yourself instead of exporting saves you up to five times more than selling it.

  1. Export caps limit your earnings
    • In standard suburban single-phase homes, you can export up to 5 kW at any time.
    • Three-phase homes may be able to export more, but only if their network allows it.
    • In rural areas, stricter limits (or even zero-export rules) can further restrict your earning potential.

A real-world example

Let’s compare a household using 24 kWh/day versus exporting 24 kWh/day at different rates:

ScenarioRateDaily valueQuarterly value (90 days)
Buying from grid (best case)30¢$7.20$648
Buying from grid (worst case)50¢$12.00$1,080
Selling to grid (high FiT)$1.68$151.20
Selling to grid (low FiT)$0.72$64.80

Even at the higher end of FiTs, the credit you earn from exporting is modest compared to the savings you get from using that energy yourself.

When exporting can be more valuable

  • High time-of-use FiTs: If your retailer pays extra for late-afternoon or evening exports, you can time appliances to free up more solar for those windows.
  • Virtual Power Plants (VPPs): Some VPP programs pay higher rates or offer bonuses for allowing them to control your battery’s exports during peak demand.
  • Legacy premium FiTs: Legacy tariffs (30-45c/kWh) apply to pre-2011 installations. Rates have decreased as of July 1, 2025, for standard contracts.

Selling to the Grid vs Storing in a Battery

When your solar panels produce more energy than you need, you have two main options:

  1. Export it to the grid and receive a feed-in tariff (FiT).
  2. Store it in a battery to use later, reducing the amount you buy from the grid.

The financial difference

  • Exporting to the grid: Typical FiT in 2025 is 3–10¢/kWh.
  • Using stored energy instead of buying from the grid: Saves you 30–50¢/kWh (your retail electricity price).

That means each kWh you store and use later is usually worth three to five times more than what you’d get selling it back to the grid.

Example:
If you export 5 kWh/day at 7¢/kWh, you earn 35¢/day. If you store that same 5 kWh and avoid buying at 35¢/kWh, you save $1.75/day. Over a year, that’s $127.75 from exporting versus $638.75 from storing.

Now this is a small amount of export… Some houses are exporting 20+ KWH into the grid / day 

See below example 

When exporting might still be attractive

  • High time-of-use FiTs: Some retailers offer higher rates during peak grid demand. This could beneficial if you have a West Facing array of panels (west facing captures afternoon sun)
  • If you have a small system: You may not have much excess power to store, making a battery less beneficial.

Battery considerations

  • Upfront cost: A quality home battery typically costs $8,000–$15,000 installed.
  • Payback period: Often 7–12 years, depending on your usage patterns, electricity prices, and available rebates.
  • Flexibility: Batteries can also provide backup during blackouts and participate in Virtual Power Plant (VPP) programs for extra income.

How Virtual Power Plants (VPPs) Change the Equation

A Virtual Power Plant (VPP) links together many home solar and battery systems so they can be managed as one large power source. The VPP operator — often your electricity retailer or a specialist energy company — can control when your battery charges or discharges to help support the grid during high-demand periods.

In return, you receive payments, bill credits, or access to special electricity plans.

How VPPs can improve your returns

  • Higher export rates during demand peaks: Instead of the usual 3–10¢/kWh FiT. Amber for example offers up to $16 / KwH to draw energy from your battery
  • Sign-up bonuses or rebates: As it currently stands, the NSW VPP incentive offers $40-$55 / KwH to sign up. For example, 24kWH battery x $55 kwh = $1,320 as a VPP cashback
  • Better self-consumption: VPP software can optimise your battery usage so you use more of your own solar power.
Diagram of how a Virtual Power Plant (VPP) works in conjunction with the grid.

Example

If a VPP discharges 5 kWh from your battery during a high-demand event and pays $0.50/kWh, you earn $2.50 for that event. Multiply that by dozens of events per year, and it can add hundreds of dollars to your annual return.

The trade-offs

  • Control: You give up some control over your battery. The VPP may discharge it when you’d prefer to keep it full.
  • Plan lock-in: You often need to stay with the same retailer for the VPP benefits.
  • Variable earnings: Payments depend on how often the VPP calls on your battery and the market price at the time.

Maximising the Value of Your Solar Exports

If you want to get the most out of every kilowatt-hour your solar system produces, you need to think beyond just the feed-in tariff (FiT) rate. A few smart changes can significantly improve the value you get from your solar investment.

1. Choose the right retailer and plan

  • Compare FiT rates — some retailers pay 2–3¢/kWh more than others. Find out more in our recent article
  • Look for time-varying FiTs if your home can export during high-value periods (late afternoon/evening).
  • Read the fine print — some “high FiT” offers come with higher daily supply charges or less competitive usage rates.

2. Shift your energy use to daylight hours

  • Run appliances like dishwashers, washing machines, and pool pumps during the middle of the day when your panels are producing the most.
  • Use timers or smart plugs to automate this.
  • Every kWh you use yourself saves you 30–50¢ instead of earning you just 3–10¢.

3. Consider battery storage

  • Store excess energy to use during peak evening hours instead of exporting it.
  • Pair the battery with a Virtual Power Plant (VPP) to increase export value when the grid is under strain.
  • Take advantage of federal or state rebates to shorten the payback period.
Bidirectional EV Charger

4. Optimise your system for network rules

  • If you live in a rural area with lower export limits, focus on maximising self-consumption since you can’t send as much to the grid.
  • For homes with west-facing panels, align exports to late-afternoon demand peaks, which can attract higher FiTs.

5. Maintain your solar system

  • Dirty panels and underperforming inverters can reduce your output — and your export earnings.
  • Schedule regular inspections and cleanings, especially before summer.

Key Takeaways — Is Selling Your Extra Solar Power Worth It in 2025?

Selling your extra solar power back to the grid is still a useful way to reduce your electricity bill, but it’s rarely a big money-maker in 2025.

The pros:

  • Provides bill credits for unused solar power.
  • Easy to do once your system and smart meter are set up.
  • Can be combined with time-varying FiTs, or with a battery through VPP participation, for better returns

The cons:

  • Typical FiTs (3–10¢/kWh) are much lower than the price you pay for grid electricity (30–50¢/kWh).
  • Export limits and network constraints can reduce how much you can send to the grid.
  • Two-way pricing tariffs may lower FiT value in the middle of the day.

Who benefits most from selling to the grid?

  • Homes with no battery storage and consistent excess production. However, only marginally now.
  • West-facing systems that align with higher-value late-afternoon FiTs.
  • Battery owners participating in VPPs that pay premium export rates during peak demand.

The real financial win with solar is in self-consumption — using your own energy instead of buying from the grid. Selling to the grid is still worth doing for your unused solar, but it should be seen as a bonus, not the main source of value.

If you’re unsure whether exporting, storing, or joining a VPP is right for you, the team at Lenergy can help you assess your home’s usage patterns, network rules, and available rebates. Get in touch today to discuss the smartest way to use your solar so it works harder for your household.

The team at Lenergy receiving a local business award in the Southern Highlands for Business of the Year,

Bidirectional EV Charging with the Sigenergy SigenStor: A Complete Guide

You’ve got solar, you’re eyeing a battery, and your EV is the biggest “battery” you own — but using it to power your home still feels murky. Is bidirectional charging real yet in Australia? What even is it? Will it work with your car? And is a DC charger worth the price compared to a standard wall box, especially with tariffs shifting and evening usage hurting your bill? (NSW’s rising prices and modest feed‑in credits are pushing more households toward self‑consumption.)

In this guide, you’ll get a walkthrough of Sigenergy’s SigenStor DC bidirectional charger — how it fits into a SigenStor solar‑plus‑battery system, what it can and can’t do today, what it costs to install, and which EVs in Australia have been tested.

What is bidirectional EV charging?

The simple version: most chargers only push energy into your EV. Bidirectional charging lets energy also flow out of the EV when you want it.

  • V2H (Vehicle‑to‑Home): your EV helps run your home — for bill savings at night or for backup during outages.
  • V2G (Vehicle‑to‑Grid): your EV exports to the grid (or a retailer/VPP) when prices are attractive.
  • V2L (Vehicle‑to‑Load): a socket to power tools/appliances directly from the car (handy, but separate from whole‑home support).
  • V2X: umbrella term covering the above (home, grid, building, loads).

Why DC matters:

  • AC chargers rely on the EV’s onboard inverter. They’re common (7–22 kW), cheaper, and one‑way in most homes.
  • DC chargers use an external power module to convert power. Sigenergy’s SigenStor module is DC and bi‑directional, so it can charge fast and discharge from the EV back to the home/grid (V2X) when supported by the car and the system. That’s how you unlock meaningful V2H/V2G.

Why Australians care in 2025:

  • Evening grid prices are the sting in the bill, while daytime solar exports are worth less. Using your own solar later — either from a home battery or your EV — boosts self‑consumption and cushions price spikes.

How the Sigenergy SigenStor DC EV Charger Works

The Sigenergy SigenStor DC EV charger isn’t a standalone wall box — it’s an add-on module that works as part of the SigenStor solar-plus-battery system. That integration is what enables its bidirectional capability and high charging speeds.

Direct DC-to-DC Connection

Most home EV chargers are AC chargers, which feed power into your car through its onboard inverter. This means the car controls charging speed and efficiency. The SigenStor charger, however, uses a DC-to-DC link between your home battery/solar system and your EV’s battery.

  • Result: Less conversion loss, higher efficiency, and faster charge/discharge rates.
  • Speeds:
    • 12.5 kW model → adds roughly 75 km of range per hour.
    • 25 kW model → adds roughly 150 km of range per hour (actual figures depend on the car’s efficiency and charging curve).

Bidirectional Power Flow

The charger can send power to the EV (charging) and from the EV (discharging). This supports:

  • V2H (Vehicle-to-Home) — powering household loads from your EV battery during the evening or a blackout.
  • V2G (Vehicle-to-Grid) — exporting power to the grid when tariffs are high (if supported by your retailer or a VPP program).
  • PV surplus charging — prioritising charging from excess solar generation.

Integration with SigenStor Energy Management

As it’s built for the SigenStor ecosystem, the charger works with Sigenergy’s AI-driven energy management platform:

  • Automatically decides when to charge or discharge based on tariff schedules, solar production, and household demand.
  • Allows manual control via the Sigenergy app for instant override.
  • Can coordinate with the home battery so you decide whether energy sits in the car, in the stationary battery, or both.
AI powered home battery - Sigenergy

Safety and Standards

The DC charger uses the CCS2 (Combined Charging System) standard — the same connector found on most modern EVs in Australia — and includes:

  • IP65 weather resistance for outdoor installation.
  • Overvoltage, overcurrent, and temperature protections.
  • Emergency stop and isolation features for maintenance.

Key Specs & Features

Models: 12.5 kW and 25 kW

Rated Power:

  • 12.5 kW → up to 12,500 W DC output/input (~75 km range/hour)
  • 25 kW → up to 25,000 W DC output/input (~150 km range/hour)
    (Speeds vary by EV efficiency and charging curve.)

Voltage Range: 150–1000 V DC

Max Current: 35 A (12.5 kW) / 70 A (25 kW)

Connector: CCS2, 10 m cable

Bidirectional functions: V2H, V2G, PV surplus charging

Smart features: App-based control, programmable schedules, AI-optimised charging

Build: IP65 weather rating, forced air cooling, operating range -20 °C to +55 °C

Safety: Overvoltage, overcurrent, temperature protection, emergency stop

Installation Notes

  • Only works as part of a SigenStor system (cannot be installed as a completely standalone charger).
  • Can be mounted indoors or outdoors, wall or pedestal-mounted.

Vehicle Compatibility in Australia (2025)

While bidirectional charging is an exciting concept, it’s only useful if your EV supports it. As of August 2025, Sigenergy has confirmed and tested a short but growing list of compatible EV models in Australia.

Currently Tested & Confirmed Models

From Sigenergy’s own compatibility testing:

  • Volvo C40 Recharge
  • BYD Atto 3
  • Ford F-150 Lightning

These models are confirmed to work with the SigenStor DC charger for both charging and discharging (V2H/V2G), provided the firmware on the vehicle is updated to the tested version or newer.

Future Compatibility

Sigenergy is actively expanding the list of supported models as more EV makers enable bidirectional functionality. Popular models expected to be tested in the next 12–18 months include:

  • Hyundai Ioniq 5 / Ioniq 6
  • Kia EV6
  • Nissan Leaf (latest models with CHAdeMO → CCS2 adapters pending approval)

If you’re considering this charger, it’s important to confirm compatibility with your EV dealer or installer before purchase — especially if your car is not on the official tested list.

Installation and Pricing

The Sigenergy DC EV charger is not a cheap plug-and-play unit — it’s a high-power, bidirectional module that needs to be integrated into your existing or new SigenStor system by a qualified installer.

Pricing (Including Installation)

Model & Install TimingPrice (AUD, incl. GST)
12.5 kW — Installed same day as solar/BESS$6,644.22
12.5 kW — Separate visit$7,222.38
25 kW — Installed same day as solar/BESS$8,396.62
25 kW — Separate visit$8,974.78

Notes:

  • Prices include the 10 m CCS2 charging cable.
  • “Same day” install means the charger is fitted at the same time as your SigenStor battery or solar system, saving on labour and travel costs.
  • “Separate visit” pricing reflects the extra time and labour to retrofit the charger later.

Installation Requirements

  • Must be part of a SigenStor system.
  • Installed by a Clean Energy Council-accredited installer.
  • Suitable for indoor/outdoor mounting.

Pros and Cons

Like any emerging technology, the Sigenergy SigenStor DC EV Charger has clear strengths — but also some limitations you should be aware of before investing.

Pros

  • Fast DC Charging at Home
    With up to 25 kW charging power, it’s significantly faster than most residential AC wall boxes (typically 7–11 kW). This means shorter top-up times and greater flexibility.
  • True Bidirectional Capability
    Supports V2H (Vehicle-to-Home) and V2G (Vehicle-to-Grid), so your EV can act as a large home battery or even earn income from exporting to the grid if your retailer offers a program.
  • High Efficiency
    Direct DC-to-DC transfer avoids double conversion losses, achieving efficiency above 97%, which means less wasted energy and lower charging costs.
  • Seamless Integration with Solar & Battery
    Works natively with the SigenStor system, allowing intelligent energy management and easy switching between EV, home battery, and household loads.
  • Future-Proof Design
    Supports the CCS2 standard and is built to handle the ISO 15118-20 bidirectional protocol, which more EV makers are adopting.

Cons

  • Limited Compatibility Today
    As of 2025, only a few EV models in Australia are officially supported (Volvo C40, BYD Atto 3, Ford F-150 Lightning). If your car isn’t on the list, you can’t use V2H/V2G yet.
  • High Upfront Cost
    $6,600–$9,000 installed is a big investment, especially if your EV can’t yet take advantage of bidirectional functions.
  • Requires Full SigenStor System
    You can’t install this charger as a standalone product — it must be paired with a SigenStor battery/inverter setup, which adds cost and complexity.
  • New Technology Risks
    Bidirectional charging standards are still maturing, and firmware updates (both from Sigenergy and car manufacturers) may be needed for full functionality.

How It Compares

High-power home EV charging is still a niche market in Australia — and true bidirectional options are even rarer. Here’s how the SigenStor DC charger stacks up against other contenders.

Compared to Typical AC Wall Boxes

  • Power Output: Many home AC chargers deliver 7 kW (single-phase) or up to 22 kW (three-phase). While these can be quick, the SigenStor’s 12.5 kW and 25 kW direct DC output bypasses the EV’s onboard inverter for higher real-world efficiency and sustained high-speed charging — particularly valuable for large-battery EVs.
  • Bidirectional Capability: AC units are usually one-way. Even the few AC bidirectional chargers (like the Wallbox Quasar 2) are limited in Australia due to compatibility and certification hurdles.
  • Efficiency: DC avoids the EV’s onboard inverter, reducing losses.

Compared to Other DC Home Chargers

  • Wallbox Quasar 2 (DC, bidirectional): Not yet widely available in Australia, limited to 7.4 kW, CHAdeMO and CCS2 in some markets — but at lower power than the Sigenergy.
  • FIMER & Delta DC Chargers: Offer high-speed DC charging (10–25 kW), but typically lack residential bidirectional capability in Australia.
  • Cost: Sigenergy pricing ($6.6k–$9k installed) is competitive with other high-end DC home chargers, though the SigenStor requirement adds a system cost layer.

Why It Stands Out

  • Integration: The SigenStor module is part of a complete solar + battery ecosystem, enabling smooth energy management without third-party controllers.
  • Higher Power: 25 kW is among the fastest home-capable DC chargers on the market.
  • Bidirectional with CCS2: Future-ready for the standard most new EVs in Australia are adopting.

Where Others Might Be Better

  • If you don’t have (or plan to have) a SigenStor system, a standalone AC or DC charger from brands like Fronius, Delta, or Tesla may be more cost-effective.
  • If you own a CHAdeMO vehicle (e.g., older Nissan Leaf), specialised CHAdeMO bidirectional chargers are more suitable — though their future in Australia is uncertain.

Is It Worth It?

Whether the Sigenergy SigenStor DC EV charger is a smart buy for you depends on your EV, your energy setup, and your goals.

It Makes Sense If:

  • You already own (or plan to buy) a compatible EV like the Volvo C40, BYD Atto 3, or Ford F-150 Lightning — and want to use it for V2H or V2G now.
  • You’re installing a SigenStor solar + battery system and want fast, efficient EV charging built into your energy ecosystem.
  • You have high evening power use or want blackout resilience without buying an oversized stationary battery.
  • You’re in a state with battery rebates or VPP incentives, which help offset the cost.
  • You value future-proofing — knowing more EV models will support bidirectional charging in the coming years.

You Might Wait If:

  • Your EV isn’t yet compatible — you’d be paying for features you can’t use.
  • You don’t plan to install the full SigenStor system.
  • Your driving patterns mean you’re rarely home during the day to charge from solar, limiting V2H/V2G benefits.
  • You’re waiting for more competition in the home bidirectional market, which could push prices down.

The SigenStor DC charger is one of the fastest and most capable bidirectional home chargers available in Australia, however its value hinges on having the right EV and the SigenStor ecosystem in place. If you tick those boxes, it can significantly boost your energy independence and make your EV a genuine part of your home’s energy strategy. If not, you may be better served by a standard AC charger for now — and revisit bidirectional options when compatibility and incentives improve.

Sigenergy Sigen AC EV Charger Review: Features, Costs, Pros and Cons

Choosing the right home EV charger is as important as choosing the car itself. With so many options promising speed, smart features, and solar integration, it can be hard to tell which ones genuinely deliver.

The Sigenergy Sigen AC EV Charger is designed for both standard home charging and full integration with Sigenergy’s SigenStor solar and battery system. In this review, you’ll get a clear breakdown of what it does, how it performs, how much it costs, and when it makes sense to choose it over other chargers.

What is the Sigenergy Sigen AC EV Charger?

The Sigenergy Sigen AC EV Charger is a home and workplace charging solution designed for Australian electric vehicle owners. It’s available in three power levels:

  • 7.0 kW – best suited for single-phase homes and overnight charging
  • 11.0 kW – three-phase, faster turnaround for compatible EVs
  • 22.0 kW – three-phase, the fastest option for home or small business use

All models use the Type 2 connector standard, which is the default for Australian EVs, meaning it’s compatible with the vast majority of vehicles on the market. You can choose between a socket with a shutter (extra safety) or a tethered cable version for convenience.

The “AC” refers to “Alternating Current”, which is the standard voltage that your home runs off already. Why it’s mentioned is because they have an alternative “DC” charger which refers to “Direct Current” which you get straight from your solar and battery system before it converts to the AC power in your home. There are certain benefits to this.

What makes the Sigen AC EV Charger different from a generic wall unit is its ability to work as a stand-alone charger or as part of the Sigenergy ecosystem. If you have a Sigenergy SigenStor battery and solar setup, the charger can:

  • Use surplus solar power to charge your EV, reducing grid reliance
  • Schedule charging based on time-of-use tariffs or your own preferences
  • Coordinate charging with your home battery so you’re using stored renewable energy rather than peak-rate grid electricity

It’s also designed for both indoor and outdoor installation. With an IP65 weather rating and IK10 impact resistance, it can handle Australia’s climate — from heavy rain to blazing summer sun — while being robust enough for garage or driveway mounting. See more in our recent article here.

In short, the Sigen AC EV Charger is pitched as a flexible, future-ready EV charger that suits both new EV owners looking for a reliable home solution and existing solar/battery households wanting to make the most of their renewable energy.

How Does It Work?

The Sigen AC EV Charger can operate as a stand-alone unit or integrate with the SigenStor battery and solar system for smarter energy use.

Charging modes

  • PV Surplus Charging – Uses excess solar generation to charge your EV.
  • Fast Charging – Combines solar and grid power for maximum speed.
  • Battery Boost Charging – Draws from stored energy in a SigenStor battery, even at night.

Smart energy management

When paired with the Sigen Power Sensor, the charger can:

  • Avoid overloading your home’s electrical supply.
  • Schedule charging to off-peak times or low tariff periods.
  • Prioritise renewable energy use.

Key Features and Technical Specs

Power levels: 7.0 kW (single-phase), 11.0 kW (three-phase), 22.0 kW (three-phase)

Connector: Type 2 (socket with shutter or tethered cable)

Connectivity: Wi-Fi, 4G, Ethernet; RFID card access; OCPP 1.6J support

Protection: Over/under voltage, overload, over-temperature, surge, and DC fault detection (6 mA)

Dimensions & weight: 234 × 384 × 126 mm; 4.5 kg (7/11 kW) or 6.4 kg (22 kW)

Cable length: 5 m standard

Operating temp: -30°C to 55°C

Physical Specs:

  • Dimensions: 234 mm (W) × 384 mm (H) × 126 mm (D)
  • Weight: 4.5 kg (7/11 kW) or 6.4 kg (22 kW)
  • Operating temperature: -30°C to 55°C
  • Standard cable length: 5 m

In short, this charger combines solid build quality, flexible power options, and smart energy management tools, making it well-suited for EV owners who want more than just a basic plug-in unit.

How Much Does It Cost?

The cost of a Sigenergy Sigen AC EV Charger comes in two parts — the charger unit itself and the installation.

Charger-only pricing

  • Sigenergy 7.0 kW EV AC Charger – $1,248.50
  • Sigenergy 11.0 kW EV AC Charger – $1,348.87
  • Sigenergy 22.0 kW EV AC Charger – $1,497.37

Prices above are for the charger only and do not include installation or accessories.

Installation costs

Installation costs can vary widely depending on your home’s electrical setup and where you want the charger installed. Here are the main factors that affect price:

  1. Single-phase vs three-phase
    • Three-phase installations require more expensive cabling and protection devices (2–3× the cost of single-phase in some cases).
  2. Distance from the switchboard
    • Back-to-back installation (charger on the other side of the wall from the switchboard) is quicker and cheaper.
    • If the charger is far from the switchboard (e.g., garage on the opposite side of the house), you’ll need a longer cable run, which adds labour and material costs.
  3. Cable size and voltage drop
    • Longer cable runs require larger cable sizes to prevent voltage drop, which increases cost.
  4. Additional safety devices
    • Installations typically require isolators and RCBO safety protection devices. These are not included with the charger and will add to the cost.

The bottom line

While the Sigen AC EV Charger unit price is competitive, the total cost will depend heavily on your home’s wiring and installation complexity. In some cases, the installation can cost as much — or more — than the charger itself. That’s why it’s worth getting a site-specific quote before you buy. 

Pros and Cons

Like any EV charger, the Sigenergy Sigen AC EV Charger has strengths and trade-offs. Understanding both helps you decide if it’s the right fit for your setup.

Pros

  • Flexible power options – Available in 7 kW, 11 kW, and 22 kW models to suit both single-phase and three-phase homes.
  • Solar and battery integration – Works seamlessly with SigenStor to prioritise renewable energy use.
  • Smart charging modes – PV Surplus, Fast Charging, and Battery Boost options for different needs.
  • Dynamic load management* – Protects your home’s electrical system by adjusting charge rate based on other usage.
  • Weatherproof and durable – IP65 and IK10 ratings make it suitable for indoor or outdoor installation.
  • Multiple connectivity options – Wi-Fi, 4G, and Ethernet, plus RFID card support.
  • OCPP compatibility – Can connect to third-party EV charging networks for more flexibility.

Dynamic load management requires the optional Sigen Power Sensor.

Cons

  • Best features require other Sigenergy products – To unlock full PV surplus and battery boost capabilities, you’ll need a SigenStor system and/or Power Sensor.
  • Limited benefit of higher kW chargers if your EV can’t use it – Many EVs in Australia have onboard chargers limited to 7 kW or 11 kW.
  • Not a DC fast charger – This is an AC unit, so it won’t give you the rapid charging speeds you see at public charging stations.

Verdict on balance

For households with solar and a SigenStor battery, this charger offers excellent integration and smart features. For stand-alone installs, it’s still a solid, durable, and future-ready AC charger — but some of its “headline” benefits won’t be fully utilised without the broader Sigenergy ecosystem.

Is It the Right Choice for You?

The Sigenergy Sigen AC EV Charger isn’t a one-size-fits-all product — it’s a strong option for certain homeowners and less of a priority for others. Here’s how to decide.

Best fit scenarios

You’ll get the most out of this charger if you:

  • Already have (or plan to install) a SigenStor battery – This unlocks PV Surplus, Battery Boost, and advanced load management features.
  • Own rooftop solar – Lets you charge directly from excess solar generation, reducing reliance on grid electricity.
  • Have three-phase power and a compatible EV – Makes full use of the faster 11 kW or 22 kW charging speeds.
  • Want a durable, weatherproof charger – The IP65/IK10 ratings make it ideal for outdoor mounting in all Australian climates.
  • Value smart charging controls – Scheduling, tariff-based charging, and app control help optimise energy costs.

When to consider other options

You may want to look at alternatives if you:

  • Don’t have solar or a battery and won’t be adding them soon — you’ll be paying for features you won’t use.
  • Have an EV with a 7 kW onboard charger but no plans for a three-phase upgrade — a lower-cost 7 kW unit may suffice.
  • Need ultra-fast charging at home — you’d be looking at a DC charger, which is a different category altogether.
  • Don’t already have and are not planning to have a sigenergy inverter / battery eco system/ You could just use any specific charger which could be more affordable.

The middle ground

If you’re planning to expand your home energy setup in the next few years, the Sigen AC EV Charger could still be a good “future-proof” choice. You can use it now as a standard charger, then add solar, battery storage, or three-phase power later to unlock its full potential.

Final Thoughts

The Sigenergy Sigen AC EV Charger is more than a basic wall plug for your electric vehicle — it’s a smart, solar-ready charging solution built for Australian conditions. With three power levels, robust weather and impact protection, and seamless integration with the SigenStor battery, it’s well suited to homeowners who want to maximise their use of renewable energy.

Where it really shines is in solar and battery-equipped homes. In this setup, you can charge directly from surplus PV, tap into stored energy at night, and schedule charging to avoid peak tariffs — all through a single app. If you already have a SigenStor, it’s a natural pairing.

However, if you don’t have solar or battery storage, the extra smart features may go unused, and a simpler (and cheaper) charger could meet your needs just as well. Likewise, if your EV’s onboard charger is limited to 7 kW, the faster models won’t offer a speed boost — though they might still be worth it if you plan to upgrade your car or wiring in the future.

Bottom line: The Sigen AC EV Charger is a high-quality, future-proof option that makes the most sense for solar and battery owners, or those planning to expand their home energy system. For the right household, it’s not just a charger — it’s part of a smarter, greener way to power your driving.

How to Choose a Solar Battery Size: Everything You Need To Know

Figuring out what size solar battery you need shouldn’t feel like learning a new language. Between “overnight usage,” “export limits,” and “peak sun hours,” it’s easy to feel like the more you read, the less you know.

And yet—battery size is one of the most important decisions you’ll make when going solar. Too small, and it’ll run out before your evening’s even over. Too big, and you might be paying for capacity you’ll never use. Plus, with the new federal rebate only claimable once, getting it wrong now could cost you later.

At Lenergy, we’ve helped thousands of homeowners size their solar and storage systems based on real-life usage—not guesses or generic recommendations. We know how to spot when a 10kWh battery makes sense, and when a 24 or 48kWh system would actually serve you better in the long run.

In this guide, you’ll learn exactly how to choose the right battery size for your home. We’ll walk through the formulas, examples, and trade-offs—so you can decide what fits your needs, your lifestyle, and your roof.

Why Battery Size Isn’t One-Size-Fits-All

There’s no universal “right” battery size. The best fit depends on two things:

  1. Whether you already have solar or not
  2. How and when your household uses power

If You’re Starting Fresh: Solar + Battery

If you’re installing both panels and a battery, you can size the entire system around your needs. This means designing your solar array large enough to cover daily usage and charge the battery — especially in winter when generation drops and usage usually increases  (this is the case in the Southern Highlands as it is colder and the AC heater is generally running more frequently. Though in warmer climates such as Newcastle, their energy use is quite stable and constant throughout the year)

It also means you can plan ahead. Thinking about buying an EV? Having Kids? Upgrading air con? Taking on housemates? Starting from scratch gives you flexibility to factor those changes into the design.

If You Already Have Solar: Battery Retrofit

Adding a battery to an existing system is a bit different. Here, the biggest question is: Do you have enough solar exports to fill a battery?

If you’re only exporting 2–3kWh a day, there’s not much spare energy to store. But if you’re exporting 10kWh or more, a battery starts to make a lot more sense.

What Size Solar System Do You Need to Charge a Battery?

If you’re installing solar for the first time, it’s not just about powering your home — it’s about generating enough energy to charge your battery too. This is where a simple sizing formula can help.

Step 1: Find Your Daily Energy Usage
(usually on page 2 or 3 of your bill – see below snippet)

Your electricity bill will show your average daily usage, measured in kilowatt-hours (kWh). The above is 20kWh / day.

Let’s use another example and say it’s 24kWh/day — a common number for a family home.

Step 2: Estimate Your Local Sun Hours

Solar panels don’t generate their rated output all day long. In most parts of Australia, we use a conservative estimate of 3.6 peak sun hours (PSH) — the number of hours per day when solar panels operate at close to their rated capacity.

Step 3: Use the Sizing Formula

Solar system size (kW) = Daily usage (kWh) ÷ 3.6 (PSH)

For example:

24kWh ÷ 3.6 PSH = 6.6kW solar system

This means you’d need a 6.6kW system to roughly match your daily energy needs — assuming average weather across the year.

But remember: winter generation is lower, so it often makes sense to oversize slightly to ensure your system can still charge your battery during shorter, cloudier days.

If You Don’t Have Solar Yet: How to Estimate Your Battery Needs

If you haven’t installed solar yet, your electricity bill is your best clue — but it doesn’t tell the full story. It shows how much power you use each day, but not when you use it. That matters, because batteries only cover your night-time usage (when solar isn’t running).

So, how do you estimate battery size without solar data?

General Rule of Thumb

Most households use a good chunk of their energy at night — especially if everyone’s out during the day. Here’s how to estimate:

  • Light to moderate night-time usage:
    Battery size ≈ 50% of daily usage
  • Heavy night-time usage (away during the day):
    Battery size ≈ 75% of daily usage

Example 1: Bill Without Solar

From the Lenergy example:

  • Average daily usage: 24kWh

Option 1 – Moderate night use:
24 × 0.5 = 12kWh battery

Option 2 – Higher night use:
24 × 0.75 = 18kWh battery

So if this home adds solar + battery, either size could work — but we’d also want to check their lifestyle, winter usage, and future energy needs before finalising anything.

Keep in mind: If you size your battery before installing solar, you’ll want to make sure your panel system is big enough to charge the battery as well. That’s where the 6.6kW example from the last section fits in.

If You Already Have Solar: Can Your System Fill a Battery?

If you’ve already got panels on your roof, you don’t have to guess. Your electricity bill holds the answers — specifically in the solar export and daily usage numbers.

These tell you whether you’re generating enough excess solar to charge a battery and how much storage you actually need.

Step 1: What to Look for on Your Bill

Find these two figures:

  • Average daily usage (kWh) — your total electricity use
  • Average daily export (kWh) — how much solar you’re sending back to the grid

If you’re exporting less than 5kWh/day, there may not be enough spare energy to charge a battery — at least not consistently. If you’re exporting 10–15kWh/day or more, you’re in good shape to store that energy instead of selling it back for cents.

Example 2: Existing Solar, Moderate Use

From the bill shown below:

Key takeaways:

  • General usage = $0.29 / kWh
  • Daily supply charge = $1.30
  • Average daily usage = 13.75kWh
  • Average daily export = 11.7kWh
  • Controlled Load = 498kWh / 91 days = 5.5kWh per day

Given that this property already has solar, as indicated by the ‘solar exports’, we can gauge when they’re using power. If they are exporting power to the grid, this means they must be at least covering daytime usage with the excess going to the grid, which indicates that their usage must be occurring overnight. 

Looking at the daily usage will indicate how much battery storage the homeowner needs, but we need to ensure there is enough excess energy to charge the batteries. Comparing daily usage (kWh) to daily export (kWh), we can determine whether there is sufficient excess power to charge a battery or if they need additional solar to cover a shortfall. 

Calculation:

  • Average daily usage = 13.75kWh
  • Average daily export = 11.7kWh

This property consumes 13.75kWh per day, and in the same period exports 11.7kWh to the grid. Which indicates that this consumption must be occurring overnight. We can see that they are exporting slightly less than they are consuming, but this is negligible. To calculate the battery size we would take the lesser of the two values, in this case 11.7kWh is the amount of storage that would be required. 

Example 3: You Use More Than You Export

  • Average daily usage: 30kWh
  • Average daily export: 10kWh

This home is using a lot more power than it’s sending back to the grid. With only 10kWh of excess solar on an average day, that’s all you have available to store in a battery.

Why This Limits Battery Size

A battery can only charge from surplus solar — unless you also charge from the grid. If you’re only exporting 10kWh a day:

  • A 10kWh battery will fill on a sunny day, but that’s it.
  • A 15–20kWh battery would rarely fill completely from solar, especially in winter. The extra capacity would sit underused.

That’s why, in many cases like this, we recommend adding more solar first before investing in a large battery — as explained in our blog Why Am I Still Getting an Electricity Bill?. More generation means more excess to store.

But What If You Can’t Add More Solar?

Sometimes adding panels just isn’t possible. You might be limited by roof space, shading, or a budget that can’t stretch to both solar and storage upgrades. In these cases, you have another option: force charging your battery from the grid.

How Force Charging Works

Some energy plans let you charge your battery from the grid during specific low-cost or free periods — then use that stored power when rates are higher. For example, OVO Energy’s “Free 3” plan gives you three hours of free electricity each day. If your battery can be charged in that window, you can fill it without relying solely on solar exports.

This approach can:

  • Reduce your peak-time grid purchases
  • Let you run a larger battery even with low solar exports
  • Take advantage of free or discounted energy periods

The Trade-Offs

  • You’re still dependent on the grid — so if it goes down, you won’t be able to force charge.
  • It works best if you’re disciplined about timing your charging to those free/cheap periods.
  • If your plan changes or incentives drop, the savings could reduce.

Key Takeaway

If you use more than you export, and adding solar isn’t an option, a time-based plan with force charging could be a viable way to make a battery work harder for you. But you’ll need to run the numbers to make sure it’s worth it — and choose a plan that suits your habits.

When Bigger Batteries Might Be Worth It

Not every home needs a large battery — but for some, going bigger offers real benefits beyond just storing solar. If you care about blackout protection, long-term flexibility, or joining a Virtual Power Plant (VPP), it might be worth sizing up.

Here are three reasons to consider it.

1. You Want Better Backup Power During Blackouts

Most batteries let you set a backup reserve — a percentage of stored energy that’s kept aside in case of a power outage. If your reserve is only 10%, a 10kWh battery leaves you with just 1kWh during an outage.

But with a larger battery, you can set a higher reserve without sacrificing too much usable storage.

Example:
A 24kWh battery with a 40% reserve leaves you with 9.6kWh for outages — compared to just 2.4kWh on a 10% reserve.

If your area gets frequent blackouts, or you rely on medical devices, a bit of extra storage could be the difference between being covered and caught short.

2. You Want to Join a Virtual Power Plant (VPP)

Some energy retailers run Virtual Power Plant (VPP) programs, where you allow them to draw from your battery during peak demand. In return, you’re paid — often at rates well above standard feed-in tariffs — and in some cases you’ll also get a sign-up incentive.

Image showing a diagram of a virtual power plant

This can be quite fruitful if you have surplus battery storage. When you’ve got plenty of energy left after covering your own needs, it usually doesn’t bother you if the retailer takes a small amount — especially when you’re being well compensated for it.

The risk comes when your battery is sized tightly to your usage. If the VPP draws power you were counting on for the evening, you might end up having to buy electricity back from the grid at peak rates — which can undo some of the financial benefits.

VPPs can be worth exploring if you regularly have excess stored energy, or if you’re sizing up your battery with participation in mind. For more on how these programs work, check out Amber’s SmartShift VPP.

3. Your Usage Might Increase Soon

Planning on:

  • Adding an EV charger?
  • Installing ducted air con?
  • Renting out a room?

If your household energy use is likely to grow, a slightly larger battery now might save you from having to expand later — especially with the rebate only claimable once (we’ll cover that next).

When Smaller Batteries Are a Smarter Fit

Not everyone needs the biggest battery on the block. In fact, for many homeowners, a smaller battery that’s well-matched to their usage offers better value — with fewer complications and a faster return on investment.

Client testimonial saying that her electricity bills are now in credit

Here’s when it makes sense to keep things simple.

Your Usage Is Stable

If your household isn’t changing anytime soon — no EVs, no big appliances, no new tenants — a right-sized battery based on your current usage is usually enough. There’s no need to future-proof if your future looks the same.

You’re Not Interested in VPPs

If the idea of letting your retailer tap into your battery doesn’t appeal to you, you won’t need the extra headroom that larger systems offer for energy trading. Stick with a size that covers your needs and nothing more.

You Don’t Get Blackouts (Or Don’t Care About Backup)

If your area has a stable grid and you’re not fussed about keeping the lights on during the occasional outage, a small reserve — or none at all — is fine. No need to oversize for something that rarely happens.

You Want to Maximise Savings, Not Storage

Smaller batteries generally cost less and pay for themselves sooner — especially if you’re already exporting more solar than you use at night. In that case, even a 10kWh battery could make a noticeable dent in your bill.

But there’s one thing you need to keep in mind, no matter what size you’re considering — and that’s the rebate.

You Only Get the Rebate Once — So Size Carefully

Here’s something most people don’t realise until it’s too late: the federal battery rebate can only be claimed once.

That means if you install a 10kWh battery now, and later decide you should’ve gone with a 15kWh system — you’ll be paying full price for the upgrade. No second rebate. No top-up discount.

Why This Matters

It’s easy to underestimate your usage, especially if your needs grow over time. Maybe you:

  • Start working from home
  • Buy an EV
  • Install electric heating or cooling
  • Get hit with longer blackouts

If your battery can’t keep up, you’ll be stuck either buying from the grid (at peak prices) — or paying thousands to expand your storage without any incentive help.

The Safer Play

If you’ve got strong solar exports and you think your usage might increase, it may be smarter to size up slightly now — while the rebate still applies.

For more on how the rebate works — and why it’s changing — check out our guide:
Government Energy Rebates Drop in December 2025: Complete Guide

Final Checklist: How to Choose a Battery Size That Works for You

Still weighing up your options? Here’s a straightforward checklist to help you make sense of the numbers — and feel confident about your decision.

Do You Already Have Solar?

Yes:
→ Check your bill for both average daily usage and average daily export.
→ A healthy export number on its own doesn’t guarantee you can charge a battery — you need to compare it against your usage patterns.
→ Use the calculation we covered earlier: your battery size should not exceed your average daily export. If your export is less than the battery capacity you’re considering, it won’t fill consistently, especially in winter.
→ If exports are low compared to usage, adding more panels before storage will usually give you a better return.

No:
→ Start with your average daily usage from your bill.
→ Apply the 50–75% rule of thumb to estimate battery size, depending on how much of your usage happens at night.
→ Make sure your planned solar system is big enough to power your home and charge your battery, using the solar sizing formula from Section 2.

solar panels installed by Lenergy on roof with ample sun in the Southern Highlands

What’s Your Lifestyle Like?

  • Home during the day?
    → You might not need a big battery — your solar already covers daytime usage.
  • Out all day, home at night?
    → A larger battery may suit you better — more of your usage happens after sunset.

Do You Want Backup Power?

  • Frequent blackouts or medical needs?
    → Go bigger and set a higher reserve level. (look for something with full home back-up like Sigenergy)
  • Reliable grid and no outage concerns?
    → Smaller battery with minimal reserve may be fine.

Are You Joining a VPP?

  • Yes:
    → Consider oversizing slightly to avoid running short during energy sharing events.
  • No:
    → You can stick with a tighter match to your usage.

Are You Expecting Higher Usage in Future?

  • New appliances, EV, extra rooms or tenants?
    → Plan for it now — remember the rebate is one-time only.

Still Not Sure?

Start with your bill. Talk to your installer. And don’t feel pressured to go bigger just because. The right battery size is the one that matches your needs, fits your budget, and makes the most of the solar you already have — or plan to install.

Lenergy award for winning business of the year

I Have Solar — Why Am I Still Getting an Electricity Bill?

Still getting an electricity bill with solar? You’re not the only one. You’ve got panels on the roof, the sun’s doing its job — but then your power bill shows up, and it’s still hundreds of dollars. It’s frustrating, confusing, and honestly, it makes you wonder what went wrong.

This is one of the most common pain points among Australian homeowners with solar systems. The assumption is: install solar, and your power bill should vanish — or at least shrink to nothing. So when it doesn’t, it feels like something must be broken.

And sometimes, something is broken. But in most cases, it comes down to how and when you’re using your power — and what solar actually covers (and doesn’t).

At Lenergy, we see this every day. Our job isn’t just to install solar — it’s to help you make it work for your home, your habits, and your bill. And part of that is giving you the real reasons your solar might not be wiping out your energy costs — and what you can do about it.

Lenergy team photo located at their warehouse in the Southern Highlands

In this article, you’ll learn:

Let’s unpack what your electricity bill is actually telling you — and how your solar system fits into it.

Why You’re Still Getting a Bill After Going Solar

It’s completely normal — and actually expected — to keep receiving an electricity bill even after installing solar. In most cases, solar doesn’t wipe your bill entirely. However, that doesn’t mean it’s not working. It just means you might not be using it the way you thought.

Here’s why:

Your Home Still Draws Power From the Grid

Unless you have a battery, your solar system only powers your home while the sun is out. At night — or during cloudy stretches — you rely on the grid to supply your power. That’s when you’re charged your normal usage rate (usually $0.25–$0.40 per kWh depending on your plan).

Even if your panels produce more than you use during the day, that energy doesn’t carry over into the night — it’s either used instantly or exported to the grid.

Supply Charges Still Apply

There’s a daily “service to property” fee just for being connected to the grid. In the bill example we’ll walk through shortly, this charge was $1.30 per day, adding up to $118.30 over 91 days — even if no power was drawn. This is standard across Australia and non-negotiable unless you go entirely off-grid (which isn’t practical for most homes).

Feed-in Tariffs Aren’t Equal to What You Pay

When your solar system exports power to the grid, you earn a feed-in tariff (FiT). Here’s the catch though — it’s typically less than half of what you pay to use grid power.

If you’re paying $0.30 per kWh to import energy and only earning $0.07 per kWh to export it, then every unit of power you don’t use during the day is worth a lot less than one you do use.

That’s why self-consumption matters more than export.

Bill Was Zero — But Now I’m Paying. Why?

If you’ve had solar for a while, you might remember the days when your electricity bill was $0 — or even in credit. That’s not your imagination.

When feed-in tariffs were at their peak (up to 60 cents per kilowatt-hour – this was the golden error), exporting solar power was incredibly valuable. Homes didn’t need a battery because daytime generation alone was enough to cancel out the cost of night-time grid usage — and even cover the supply charge.

However things have changed. Most households today only get 3 to 7 cents per kilowatt-hour for exported power. Some retailers now offer no credits at all. At those rates, it’s far harder for solar alone to cancel out your full electricity bill.

Add in increased household energy use, and it’s no surprise that bills have crept back up — even with solar on your roof.

Bills Can Still Be High — Even With a Functional System

If you’re using more energy now than before (which is common after installing solar), or if your energy use is mostly after sunset, then your solar savings won’t show up on your bill the way you expected.

In the next section, we’ll break down what solar actually covers, how to read your bill properly, and why the timing of your energy use can make or break your savings.

What Solar Covers — and What It Doesn’t

Solar panels generate electricity when the sun is out. That electricity flows into your home and is used instantly. Any power you don’t use at the time it’s generated is sent back to the grid — unless you have a battery to store it.

Diagram made by Lenergy explaining how solar works in conjunction with the grid

That’s the part many solar owners aren’t told upfront: your system is only powering your home during daylight hours. Everything outside those hours still comes from the grid — and that’s reflected in your bill.

Let’s break it down in simple terms:

What Your Solar System Does Cover

  • Your daytime energy usage (as long as your system is producing enough)
  • Any surplus solar is exported to the grid — earning you a credit via the feed-in tariff

What Your Solar System Doesn’t Cover

  • Power used before sunrise or after sunset (unless you have a battery)
  • Daily supply charge to stay connected to the grid
  • Controlled load circuits (e.g. off-peak hot water systems), unless they’re rewired to draw from solar
  • Any extra usage that exceeds what your panels generate

Let’s Look at a Real Example

Take this electricity bill from a home that already has solar installed. Over 91 days, here’s what we see:

  • Average daily usage: 13.75 kWh
  • Average daily solar export: 11.7 kWh
  • Feed-in tariff earned: $-0.07 per kWh = $-74.55 credit
  • Electricity drawn from grid (anytime): 753 kWh at $0.288 = $216.86
  • Service to property charge: $1.30/day = $118.30
  • Total bill: $403.69

So what’s happening here?

This household is generating more solar than they’re using during the day — hence the large export figure. But the fact that their usage (13.75 kWh/day) is slightly higher than their export (11.7 kWh/day) means a large portion of their usage is occurring at night — when solar isn’t available, and grid power is the only option.

In short: their solar is working, however their usage patterns don’t align with the sun. And without a battery to store the excess energy, it’s being sold back to the grid at a low rate, and repurchased later at a much higher rate. To calculate the battery size we would take the lesser of the two values, in this case 11.7kWh which is the storage amount that would be required.

Three Common Reasons Solar Bills Stay High

If your solar system has been sized correctly, installed and generating electricity — but your bills are still higher than expected — the issue usually comes down to one (or more) of the following three factors.

1. You’re Using Most of Your Power at Night

This is the big one. If you’re out during the day and only start using appliances heavily in the evening — think cooking, heating/cooling, TVs, laundry — you’re relying on the grid when your solar isn’t generating. Read More about Peak Electricity Times in our recent blog here.

In this case, your solar is working. It’s just not being used when it’s available. Instead, it’s being exported to the grid at a low feed-in tariff (around 5–10 cents per kWh), while you’re buying back power in the evening at 30–40 cents per kWh.

This is why “self-consumption” is so important — using your solar energy while it’s being produced.

Simple fix: Try running your dishwasher, washing machine, and pool pump during the day if possible. Even small shifts in usage can make a big difference.

2. You’re Using More Electricity Than You Used To

Some households increase their energy use after getting solar — thinking the system will cover everything. It’s an easy assumption to make, but it can lead to bill shock.

Here’s the reality: if your solar system was designed to cover your old usage patterns — and you suddenly double your air con use or add a second fridge, or worse.. A spa (they suck the juice!) — you might end up consuming more than your panels can generate.

3. Your System Isn’t Performing As It Should

It doesn’t happen often, but sometimes your solar system might not be working properly. It could be an underperforming inverter, shading issues, a blown fuse, or even a tripped switch you didn’t notice.

A healthy system should come with performance monitoring — either through the inverter manufacturer’s app or a third-party platform. If you’re not sure how to check, reach out to your installer. They should be happy to review it and run a basic health check.

Tip: If you’re exporting very little solar or your feed-in credits have dropped suddenly, it’s worth checking.

Can You Reduce Your Bill Without Buying Anything New?

Yes — and in many cases, these small adjustments are the most cost-effective way to improve your solar savings. Before investing in more panels or a battery, it’s worth asking: are you getting the most out of the system you already have?

Here are a few simple, no-cost ways to do just that:

Shift Your Energy Use to Daylight Hours

This is the single biggest thing you can do to improve your solar ROI. The more energy you use while the sun’s out, the more you offset grid electricity.

Think about appliances you can run during the day:

  • Dishwasher on a delay cycle
  • Washing machine or dryer when the sun’s at its peak
  • Pool pump set to run from 10am–4pm
  • Charge your devices during the day instead of overnight

Even heating or cooling your home during daylight hours — before the evening peak — can help reduce your reliance on the grid. Find more easy, practical ways to reduce your electricity bill in our recent blog here.

Check and Compare Your Energy Plan

Not all electricity plans treat solar the same. Feed-in tariffs, time-of-use pricing, and supply charges can vary significantly. Some retailers now offer “solar-friendly” plans — others penalise you with low FiTs or inflexible conditions.

Ask yourself:

  • Are you getting the best rate for your solar exports?
  • Could a time-of-use plan benefit you if you shift usage?
  • Are there any “free electricity” windows you can take advantage of?

To see how your current deal compares, check out our guide to the best energy providers in NSW for 2025. It includes side-by-side comparisons of feed-in tariffs, rates, and solar-friendly features.

Providers like Amber, OVO, Pacific Blue and (recently) AGL offer limited-time plans with cheaper or even free off-peak power — which becomes important if you’re considering grid charging a battery (more on that shortly).

Monitor Your System’s Performance

Many people don’t realise they can check how their solar is performing in real time. Whether it’s through a smart meter, inverter app, or electricity retailer portal — you should be able to see:

  • How much energy your system is producing
  • How much you’re using in the home
  • How much you’re exporting
AI powered home battery - Sigenergy

If you don’t have access to this data, it’s worth asking your installer for help — or using it as a reason to upgrade your monitoring tech.

 Option 2: Charge the Battery From the Grid (Yes, Really)

This sounds counterintuitive — but with the right plan, it can work.

Some retailers (like Amber, Pacific Blue, OVO, and AGL) now offer time windows of free or ultra-cheap electricity, typically during off-peak or “shoulder” periods. If you pair that with a smart battery setup and a 10 kW inverter, you can force-charge your battery from the grid during those hours.

For example:

  • 3 hours of “free power”
  • 10 kW inverter x 3 hours = 30 kWh

That’s enough to fully charge a 30 kWh battery — without needing to add more panels.

But how can electricity be free?

Because during certain times of the day — particularly when there’s excess renewable generation (like sunny, windy afternoons) — the wholesale cost of electricity actually drops below zero. That means energy companies are literally paying the grid to take their power.

Retailers offering “free power” plans aren’t losing money — in fact, they’re profiting from giving it to you at no cost.

So when your battery charges during those hours, you’re helping soak up excess energy on the grid — and your retailer is getting paid to make it happen.

Sounds ideal, right? It is — but there’s a catch. These plans aren’t guaranteed to stick around forever. Retailers can change their offers, remove benefits, or shift pricing structures.

If that happens, you may wish you had more solar panels to keep your battery topped up — or you may find a new retailer offering similar benefits.

Do I Need More Solar Panels — or Is It Time for a Battery?

To figure out what’s best — more panels or a battery — let’s revisit the two scenarios already explored in this article.

Scenario 1: You’re Already Exporting Solar

In our real bill example, the homeowner used 13.75 kWh per day and exported 11.7 kWh. That tells us they’re using most of their power at night.

So what happens if they add more solar?

They’ll just export more — earning 3–7 cents per kWh — instead of reducing the 30–40 cent grid power they use overnight. It’s not worth it.

Adding a battery makes more sense here. That 11.7 kWh of excess solar could be stored and used at night, cutting out most of their general usage costs.

Scenario 2: You Use More Than You Export

Now let’s say someone uses 30 kWh per day, but only exports 10 kWh.

If they add a battery, they can only fill it with the 10 kWh they’re exporting. So a big battery won’t charge fully — and the return on investment will be limited.

Adding more solar here? Same story. Without storage, they’re still exporting low and buying high. No blackout protection, no real night-time offset.

So What’s the Right Move?

  • If you’re already exporting a lot, get a battery. You’re better off storing what you’ve got than selling it for a few cents.
  • If you’re using more than you generate, and want real bill impact or blackout cover, you may need both more solar and a battery.

So what should you do? That’s up to you. The safest bet is often more panels — but if space or budget is tight, a large battery that can charge from the grid during low-cost or free periods could be your best move.

When to Investigate a System Issue

Sometimes, everything you’ve read so far checks out — your usage patterns make sense, your solar generation seems reasonable, and your bill still doesn’t add up. That’s when it’s time to dig a little deeper.

While most systems run smoothly, it’s not uncommon for performance to slip without any obvious signs. A faulty inverter, blown fuse, shading changes, or even something as simple as a tripped circuit breaker can quietly undermine your solar savings.

Here’s how to know when it’s time to act — and what to do about it.

Signs Your System Might Not Be Performing Properly

  • Your solar export credit has dropped significantly from previous bills
  • Your system is generating far less than it used to (especially in sunny months)
  • You’ve noticed your inverter screen is off, flashing an error, or showing no output
  • You’re exporting very little despite sunny weather

What to Check First

  1. Look at your solar app or monitoring portal. Most modern inverters (like Fronius, Sungrow, Enphase, etc.) offer apps or web dashboards that show your real-time and historical solar production.
  2. Compare to previous bills. If your export or usage data looks way off from last quarter or last summer, that’s a red flag.
  3. Check your switchboard. Sometimes, a solar breaker can trip — especially after a storm or grid outage. If you’re comfortable and know what to look for, a quick check here can sometimes resolve the issue.
  4. Check the inverter itself. A healthy inverter usually has a green light or clear display. If it’s flashing red or shows an error code, take a photo of the screen and contact your installer.

When to Contact Your Installer

If you’ve tried the above and something still doesn’t look right — call your original installer (or another trusted solar professional if they’re unavailable). They can:

  • Run a system check
  • Analyse your solar production data
  • Test your inverter and panel performance
  • Help you assess if upgrades (like more panels or a battery) are worth considering

And yes — if your system is under warranty, this visit should be free or low-cost. A reputable solar provider will be more than happy to help.

Final Thoughts — Solar Isn’t Broken, But It Might Need Adjusting

If you’ve read this far, you now know that getting a power bill after installing solar isn’t a sign something’s failed — it’s a sign that something needs adjusting.

That might be your habits, your system design, or even your expectations.

Solar is still one of the smartest long-term investments a household can make — but like any investment, the return depends on how well it’s set up and how you use it.

Here’s what to take away:

  • It’s normal to still receive a bill — especially if you’re using more energy than your solar produces, or using it outside of daylight hours.
  • Not all usage is equal. Shifting energy use to the middle of the day gives you more bang for your solar buck.
  • Batteries can help — if you’ve got the solar generation to charge them. If you don’t, adding more panels (or smart charging from the grid) could be the missing piece.
  • You don’t need to rush out and spend more. But understanding your usage patterns and your system’s performance is a good first step.
  • You can only fix what you can see. So check your bill, check your system, and get advice when something doesn’t add up.

And if you ever find yourself looking at a power bill thinking, “Why is this still so high?” — now you’ve got a framework to figure it out.

If you’ve got solar and want help investigating your electricity bill or exploring your options — whether it’s shifting usage, checking system health, or weighing up a battery — feel free to reach out. We’re here to help you make the most of your setup.

The team at Lenergy receiving a local business award in the Southern Highlands for Business of the Year,

Government Energy Rebates Drop in December 2025: Complete Guide to Claim Before Deadline

What’s Happening to the Government Energy Rebates in December 2025?

Two key rebate changes are happening at the end of 2025:

1. The Federal Solar Rebate (STCs) is Decreasing on 1 January 2026
The solar rebate most Australians claim — based on Small-scale Technology Certificates (STCs) — drops in value every year until it phases out in 2030. The number of STCs you receive is tied to when your system is installed and signed off. Install after 31 December 2025, and you’ll receive fewer certificates for the exact same system.

The STCs are usually traded for a dollar value (currently around $35–$40 each), which comes off the upfront price of your system. Fewer certificates means a smaller discount.

2. A New Battery Rebate Is Starting Mid-2025 — But It Also Has a Timeline
From July 2025, battery installations in Australia will also start generating STCs — meaning eligible battery systems will now attract a federal rebate, similar to solar panels. This is good news, but the rebate will also reduce every year (just like the solar scheme). The sooner you install, the more you can claim.

These changes mean December 2025 is a key cut-off point for locking in the highest available federal incentives — for both solar and battery systems.

How Much You’ll Lose if You Wait Until 2026

If you install your solar system in January 2026 instead of December 2025, you’ll qualify for fewer STCs — and that means a smaller rebate.

Here’s a simplified example using a typical 6.6 kW solar system in Sydney:

Install DateEstimated STCsRebate Value @ $37/STC
December 202592$3,404
January 202684$3,108

Difference: $296 less just by delaying a few weeks.

With a 10 kW system, the drop is even larger — closer to $450–$500 in lost rebate value.

And while the new battery rebate begins in July 2025, it will also follow a phasedown model. So, early adopters who install before the end of 2025 are likely to get the best possible return.

In short: Waiting until next year could cost you hundreds.

What You Need to Do Before the Deadline

To lock in the full 2025 rebate, your system doesn’t just need to be booked — it needs to be installed and signed off by 31 December 2025.

That sign-off comes in the form of a Certificate of Compliance (COC) or equivalent documentation, depending on your state. This confirms the system was physically completed and meets all safety and regulatory requirements.

Here’s what you should do:

  • Start your quote process now: The closer we get to December, the harder it is to secure installation dates.
  • Choose a Clean Energy Council–approved installer: Only accredited systems qualify for STCs.
  • Confirm your installer understands the rebate deadline: The rebate value is based on when your system is commissioned, not just when it’s ordered.
  • Allow for delays: Weather, supply issues, or grid approvals can push timelines out — aim to finish well before mid-December if possible.

And if you’re planning to install both solar and battery? It’s worth speaking to your installer about how to time the install so you maximise both rebates — especially if you’re eligible for the new battery STCs from July 2025 onward.

Lenergy office staff at office located in Moss Vale, NSW

Is It Still Worth Installing Solar or Batteries After December?

Yes — but you’ll need to reset your expectations slightly.

Even after the rebate drops in January 2026, solar still delivers strong savings over time. A smaller rebate doesn’t erase the benefits of lower power bills, energy independence, and protection from rising electricity prices. It just means your payback period might be slightly longer.

The same applies to batteries. While the best value comes early in the new rebate cycle, batteries remain a solid long-term investment — especially if you:

  • Use a lot of power in the evening
  • Want blackout protection
  • Are planning to join a Virtual Power Plant (VPP)
  • Want to make the most of solar self-consumption

If you can’t install before the deadline, don’t panic. You’ll still access some rebate support — just less than if you had acted sooner. It’s still a worthwhile investment, especially if the system is sized right and tailored to your usage.

Common Questions About the Rebate Changes

Do I still qualify for the solar rebate in 2026?
Yes, the federal solar rebate (STC scheme) continues until 2030. But the number of certificates you receive — and the rebate value — drops each year on 1 January.

What if my install is delayed past December?
If your system isn’t installed and signed off by 31 December 2025, your rebate will be calculated based on the 2026 deeming period. It’s not a total loss — just a smaller benefit.

Can I combine the solar and battery rebates?
Yes. If you install a battery from July 2025 onward, and it meets the eligibility criteria, you’ll get additional STCs for that battery on top of your solar rebate. The two rebates run under the same federal program but apply to different system components.

What if I only want a battery?
From mid-2025, batteries installed on their own (with or without new solar) will qualify for STCs — so yes, you can claim a rebate on battery-only installs, provided the system meets the program requirements.

Will rebates keep decreasing every year?
Yes. Unless the government changes policy, both the solar and battery STC rebates will step down annually until they phase out entirely in 2030.

If you’re planning to install solar or a battery system, timing matters.

The Federal solar rebate is already set to decrease from 1 January 2026 — and the new battery rebate launching mid-2025 will follow the same annual phase-down. By acting before December ends, you could save hundreds more than if you wait just a few weeks longer.

This doesn’t mean you should rush into the wrong system. But it does mean that if solar or battery storage is on your radar, now’s the time to ask the right questions, compare your options, and get the ball rolling before installation calendars fill up.

Knowledge is power — and in this case, it’s also money back in your pocket. Get in touch with our friendly team to discuss your solar and battery options

Sigenergy vs ESY Batteries: 2025 Price & Performance Review

Not every home needs the “best” battery on the market. Some just need one that fits the power bill — and the budget.

If you’ve been tossing up between Sigenergy’s premium SigenStor and the more affordable ESY Sunhome, you’re not alone. They’re two of the most talked-about batteries in Australia right now, and for good reason — they’re both modular, and both stack neatly to give you serious energy storage.

But here’s the thing: they’re not built for the same buyer. Sigenergy offers cutting-edge flexibility, full-home three-phase backup, and even EV-to-grid capability. ESY? It skips the bells and whistles for a lower price point and faster payback — however, comes with a few real limitations you need to know about.

At Lenergy, we’ve installed both — and we’ve seen exactly where each battery shines (and where it doesn’t).

In this guide, you’ll get a clear, side-by-side breakdown of Sigenergy vs ESY — from specs and performance to VPP compatibility, pricing, and who each battery is actually right for in 2025.

Sigenergy vs ESY at a Glance

If you’re deciding between Sigenergy and ESY, here’s the bottom line:

  • Sigenergy is the smarter, stronger, future-ready system. It suits high-usage homes that want full control, full backup, and full flexibility.
  • ESY is the affordable alternative. It’s best for smaller households with single-phase power, modest daily usage, and no need for whole-home backup or EV features.
battery comparison between sigenergy vs ESY. Externally mounted on 2 different homes

Here’s a quick visual breakdown:

FeatureSigenergyESY
Modular DesignStackable up to 48kWhStackable up to 30.72kWh
Hybrid InverterBuilt-in, 1P or 3P6kW, single-phase only
Max PV Input16kW+ supported8kW limit
EV ChargingAC + DC (V2G ready)Not supported
VPP CompatibilityEligible (with rebate in NSW)Limited (not yet approved)
Climate PerformanceHeated batteryHeated battery
Best ForLarge, complex or high-usage homesSmaller homes <27kWh/day
PricePremiumBudget-friendly

In short:

  • Choose Sigenergy if you want the best tech and flexibility.
  • Choose ESY if you want a fast payback and don’t need advanced features.

ESY Sunhome Battery Review

If you want a battery that simply stores your solar and saves you money — without all the extras — the ESY Sunhome makes a strong case in 2025.

It’s a modular lithium iron phosphate (LFP) system that stacks in 5.12 kWh blocks, allowing up to 30.72 kWh of storage. It includes a 6kW hybrid inverter and is designed for single-phase homes. That alone makes it a good fit for average Aussie households — especially if your power usage is under 27kWh/day.

Explore the ESY Sunhome Battery

Key Strengths

  • Affordability – One of the most cost-effective stackable batteries in Australia
  • Simple integration – Works well with smaller solar setups
  • Heated battery modules – Reliable even in cooler climates
  • Modular build – Scale from 5.12kWh to 30.72kWh

Limitations

  • Single-phase only – Not suitable for large homes needing three-phase backup
  • 8kW PV limit – Can restrict solar generation on larger rooftops
  • No EV charging – Not futureproofed for vehicle-to-grid
  • VPP still pending – Limited eligibility for rebates in NSW (at time of writing)

Verdict

If you’re not chasing whole-home backup or cutting-edge tech — and you just want a battery that works, saves money, and pays back fast — ESY is a great option. However, if you need something more powerful or flexible, its limitations may show.

Sigenergy SigenStor Battery Review

Sigenergy’s SigenStor is what happens when a battery system is built for flexibility from the ground up. It’s modular, scalable, and comes with a built-in hybrid inverter that supports both single-phase and three-phase homes — a rare feature in 2025.

Each stackable module is either 5kWh or 8kWh, and you can go up to 48kWh per tower. It’s also one of the only batteries on the market with AC and DC EV charging, including support for vehicle-to-grid and vehicle-to-home. In short, if you’re building a future-ready home energy system, Sigenergy is hard to beat.

View the Sigenergy SigenStor Battery

Key Strengths

  • All-in-one stackable tower — battery + inverter + optional EV charger
  • 3-phase compatible — suits large homes and blackout protection
  • Heated modules — ideal for cooler climates
  • Smart monitoring — AI-powered energy optimisation via the mySigen app
  • Up to 48kWh per tower — with parallel stacking for even more
  • DC EV charging with V2G — futureproofed for emerging tech

Tech Snapshot

  • Efficiency: 96% round-trip
  • Operating Temp: –30 °C to 50 °C
  • IP66 rating for weather protection
  • Warranty: 10 years or 6,000+ cycles

Perfect For

  • Large homes or those with complex energy needs
  • Buyers who want smart energy management and automation
  • Anyone wanting to participate in a VPP or claim full NSW battery rebates
  • EV owners planning for V2H or V2G capability

Considerations

  • Premium price point
  • Requires Wi-Fi or optional 4G dongle for monitoring
  • Overkill for small, single-phase homes with low usage

Verdict

Sigenergy is the better battery — hands down — if your budget allows for it. It’s built for flexibility, smart energy control, and full backup. However, if you don’t need those things, you might be paying for features you won’t use. At Lenergy, we strongly support Sigenergy for the right home or business.

Lenergy team at the 2025 Sigenergy Conference

Side-by-Side Specs & Features Comparison

Here’s how Sigenergy and ESY stack up when you line up the technical details — from capacity and inverter size to backup support and EV readiness.

FeatureSigenergy SigenStorESY Sunhome
Battery ChemistryLFP (LiFePO₄)LFP (LiFePO₄)
Module Size5kWh or 8kWh5.12kWh
Max Storage per Stack48kWh30.72kWh
Hybrid InverterBuilt-in, 1P or 3PBuilt-in, 6kW single-phase
Max PV Input16kW+8kW
Efficiency96% round-trip~90–93%
Backup SupportFull-home, 3-phase capablePartial circuits only
EV ChargingAC + DC (V2G ready)Not available
Smart App/MonitoringYes (AI-optimised via mySigen)Basic monitoring
Temperature Range–30°C to 50°C–25°C to 60°C
Ingress ProtectionIP66IP66
Noise<25 dB≤25 dB
Warranty10 years / 6,000+ cycles10 years / ≥6,000 cycles

What Stands Out

  • Sigenergy supports large and complex installs, advanced automation, and VPP/V2G compatibility.
  • ESY offers simplicity and affordability, but limits you to small-scale, single-phase installs — no three-phase, no EV, no VPP rebates (yet).

Performance, Backup & VPP Compatibility

When it comes to how your battery actually performs day-to-day — during blackouts, in a VPP, or through the changing Australian seasons — the differences between Sigenergy and ESY become more obvious.

Blackout Performance

  • Sigenergy offers full-home blackout protection, even in three-phase homes. That means you can keep everything from fridges and lights to air con and hot water running during an outage — assuming your battery is sized correctly.
  • ESY, on the other hand, can only support partial backup via single-phase. Typically, this means just essential loads like lights or your fridge — not the whole home.

VPP Compatibility

  • Sigenergy is fully VPP-ready and eligible for the NSW battery rebate bonus when enrolled in a supported Virtual Power Plant program.
  • ESY currently has limited VPP integration, with compatibility issues still being worked through with providers like Amber and Origin. That means no VPP cash-back at the time of writing.

Climate Performance

Both systems are strong performers in extreme temperatures thanks to heated battery modules — an important tick for anyone in cooler climates like Canberra or regional NSW. This feature ensures reliable charging even on freezing winter mornings.

Monitoring & Smart Energy Control

  • Sigenergy offers AI-optimised energy use, automatic tariff shifting, and highly customisable settings via the mySigen app.
  • ESY includes a basic monitoring app that shows charge levels and usage, but doesn’t offer the same depth of control or automation.
AI powered home battery - Sigenergy

Price & Payback: Which Offers Better Value?

When it comes to value, ESY wins on upfront cost — but Sigenergy often wins long-term if you need more capacity, better backup, or want to take full advantage of VPPs and EV charging.

Typical Installed Prices (Before Rebates)

SystemCapacityApprox. Installed Price
Sigenergy10kWh$14,000–$15,500
ESY10.24kWh$9,000–$10,500

Add extras to Sigenergy (like EV charging or 4G dongle) and the gap widens further. However, rebates can help narrow that difference.

Rebate Eligibility

RebateSigenergyESY
Federal Battery RebateEligibleEligible
NSW VPP RebateEligibleNot currently supported

So while both can access the Federal rebate, only Sigenergy gets the extra NSW VPP incentive (up to $1,500 depending on battery size). That can bring the price of Sigenergy close to ESY — especially on larger setups.

Payback Period

  • ESY typically pays back faster — especially for homes using under 27kWh/day and not needing whole-home backup.
  • Sigenergy’s ROI is longer, but can be shortened by participating in VPPs, avoiding blackout stress, and using advanced features like tariff shifting and EV charging.

Summary

  • Small usage, low budget? ESY is unbeatable on payback.
  • Bigger usage, VPP goals, or futureproofing? Sigenergy earns its price over time.

Which Battery Should You Choose?

Both Sigenergy and ESY are great batteries — but they’re built for different households.

Here’s a quick guide to help you decide:

Choose Sigenergy if:

  • You want full-home blackout protection, including three-phase
  • You plan to join a VPP and access extra NSW rebates
  • You want smart energy features, AI optimisation, and detailed control
  • You’re installing a larger system or want EV charging
  • You’re happy to invest more upfront for a longer-term return

Learn more about Sigenergy SigenStor

Choose ESY if:

  • Your daily usage is under 27kWh
  • You don’t need three-phase or whole-home backup
  • You want a stackable, affordable battery that pays back faster
  • You’re looking for a simple system that integrates with most single-phase homes
  • You’re not fussed about VPPs or EV integration (yet)

Learn more about ESY Sunhome Battery

Sigenergy is the better battery on paper — smarter, stronger, and more flexible. But if you don’t need everything it offers, ESY might be the better choice for your wallet.

Still unsure? Speak to a trusted installer like Lenergy who knows your home, usage patterns, and rebate eligibility. That’s where real value starts.

The team at Lenergy receiving a local business award in the Southern Highlands for Business of the Year,

Best Energy Providers NSW 2025: Compare Rates & Plans

Choosing the Best Electricity Provider (Without Getting Ripped Off)

Picking the right electricity provider in Australia isn’t as simple as looking at a flashy rate or a juicy feed-in tariff (FiT). There’s a lot of smoke and mirrors. And what works for your neighbour might not work for you.

At Lenergy, we help Australian homeowners navigate solar, storage, and energy decisions every day — and one of the most common questions we get is: “Who is the best energy provider?.”

In this article, you’ll learn exactly what to compare, how to avoid the common traps, which tools to trust, and how to haggle like a pro. You’ll also see why no one provider is “the best” — and what your options are if you’re just unsure where to start.

Why Picking an Electricity Provider Can Feel Confusing

If you’ve ever tried to compare electricity providers, you’ve probably ended up with 15 tabs open and a headache. Every provider claims to have the “best deal,” but they all structure their plans differently — and most of them bury the real cost behind discounts, daily supply charges, or sneaky peak rates.

One offers a high feed-in tariff (FiT), but their daily supply charge is through the roof. Another gives you “pay on time” discounts — until they quietly remove them a year later.  Then you have to look at fixed vs variable rates, controlled load, general usage, off-peak, shoulder… it’s enough to make you give up and stay put.

That’s exactly what the retailers are banking on.

They don’t reward loyalty — quite the opposite. It’s often cheaper for them to offer flashy sign-up deals to new customers and quietly increase rates on long-time ones. As a result, staying with the same provider year after year can mean you’re paying more than your neighbour… for the exact same electricity.

The bottom line? There’s no one-size-fits-all plan. And unless you understand what to look for — and where providers tend to hide the true cost — it’s easy to get locked into a deal that looks good on paper but hurts in practice.

What You Actually Need to Compare (Not Just Feed-in Tariffs)

A lot of energy retailers love to hook you with one shiny number: the feed-in tariff (FiT). It’s the amount you get paid for exporting excess solar back to the grid. 

However, the average FiT in Australia is only 3-7 cents per kWh. So if a provider is waving around a 12c or 15c FiT, it’s not because they’re feeling generous — it’s because they’re overcharging you somewhere else. Usually, it’s in your general usage rate or daily supply charge.

So what should you actually be comparing?

  • General Usage Rate: This is what you pay per kilowatt-hour for the electricity you use. It’s often the biggest part of your bill. Lower is better — but watch how it changes during peak vs off-peak times.
  • Daily Supply Charge: This is the fixed amount you pay just for being connected to the grid, whether you use power or not. It can vary wildly from provider to provider.
  • Feed-in Tariff (FiT): Still worth noting — but take it with a grain of salt. A high FiT doesn’t mean you’re getting a good deal overall.
  • Contract Length & Exit Fees: Can you leave anytime? Or are you locked in with penalties?
  • Discounts: Be wary of “conditional” discounts — they may vanish after 12 months, and you might be paying a higher base rate to begin with.

The key is to look at the whole plan, not just one flashy number. A good deal should keep your net costs down — not just promise a big credit for solar exports.

If it sounds too good to be true, it probably is. And if a plan feels hard to compare? That’s often by design.

How to Shop Smart and Haggle Hard

Here’s the thing most electricity retailers don’t want you to know: you can negotiate. And if you don’t like what you’re being offered, you can walk — or at least threaten to.

In fact, that’s one of the most effective tricks in the book.

Once you’ve compared a few options (we’ll show you how in the next section), call your current provider and say something like:

“I’ve been quoted a better rate with lower usage charges from [insert provider]. Can you match it or give me a reason to stay?”

You’d be surprised how often they’ll “sharpen their pencil” when you threaten to leave. Why? Because acquiring a new customer costs them far more than keeping you. But they won’t offer you a better deal unless you ask — and push a little.

Here are a few haggling tips that actually work:

  • Ask for a breakdown of your current rate and compare it with competitors
  • Mention specific offers you’ve seen from comparison sites or rivals
  • Be polite but firm — you’re not being difficult, you’re just informed
  • Say you’re planning to switch if they can’t offer something better

And if they won’t budge? Walk. Seriously. Switching providers is easier than ever, and most of the time, your power won’t even go off — it just quietly changes over behind the scenes.

Remember: electricity companies don’t reward loyalty. In fact, they often count on your inaction. Don’t give it to them.

The Tools That Make Comparing Easier

You shouldn’t need a spreadsheet and three hours of research just to work out if you’re on a good energy deal. Luckily, there are a couple of trustworthy, independent tools that cut through the complexity.

Start Here: Energy Made Easy

The Energy Made Easy website is a government-run tool that lets you compare electricity (and gas) plans based on your actual usage. It’s independent, transparent, and free.

Compare Plans – Energy Made Easy

You just enter your postcode and either upload a recent bill or manually input your usage. It’ll show you a ranked list of plans available in your area — including the total estimated cost, not just the headline rate.

Know Your Rights

If you ever feel like you’ve been misled, overcharged, or locked into a plan you didn’t agree to, there are protections in place.

Your Rights – Energy and Bills (NSW)

This site outlines what you’re entitled to as an energy customer, including how to dispute a bill or cancel a contract.

Thinking of Switching?

The NSW government also offers a step-by-step guide to switching providers. It covers what to expect, how to avoid pitfalls, and how long it takes.

These tools won’t magically give you the cheapest plan — but they will give you clarity. And in an industry built on confusion, that’s half the battle.

Why We Can’t Recommend One ‘Best’ Retailer

People often ask us, “Which energy provider should I go with?” And honestly — we can’t give you a single name. Not because we’re sitting on the fence, but because there isn’t one universal best.

Here’s why:

Retailers like AGL, Origin, Red Energy, Energy Australia, and Alinta can offer wildly different rates to different people, even in the same suburb. What you get offered depends on your usage, your solar export, your postcode, and sometimes just how hard you pushed on the phone.

Two neighbours could have the same provider but be paying completely different rates. That’s how murky the market is.

So instead of giving you a name, here’s what we suggest:

  • Use the Energy Made Easy tool to see what deals are actually available to you
  • Ignore the marketing spin — dig into the usage and supply rates, and compare apples to apples
  • Don’t be afraid to switch — or at least threaten to. Loyalty doesn’t pay

There are decent deals out there — but they don’t often come to you. You have to go hunting.

Want to Worry Less About Electricity Prices? Consider Solar + Battery

If you’re sick of chasing deals, haggling rates, dodging hidden charges — there’s another path: generate and store your own power.

When you install solar panels, you reduce how much electricity you need to buy. Add a battery, and you can store excess solar to use at night instead of drawing from the grid. That means you’re far less exposed to rising supply charges or shrinking feed-in tariffs.

To be clear — going solar doesn’t mean you’re cutting ties with your electricity provider entirely. However, it does mean you stop caring quite so much about what they do next.

It’s the only real way to regain control.

Of course, solar and battery systems are an investment, and they’re not right for everyone. However, if you’re using a lot of power — particularly in the evenings — or you’re fed up with the energy market merry-go-round, it’s worth seriously considering.

The team at Lenergy receiving a local business award in the Southern Highlands for Business of the Year,

Not sure where to start or how to decode your bill to see if it makes sense? That’s something we can help with. No sales pitch — just help understanding whether energy independence is a smart move for your household.

Final Thoughts: Take Back Control of Your Energy Bill

Choosing the best electricity provider for your home or business shouldn’t feel overwhelming — However for most Australians, that’s unfortunately the reality. With confusing plans, inconsistent pricing, and limited reward for loyalty, it can be frustrating.

However, now you know not to get sucked in by a shiny feed-in tariff. You know how to spot the real costs in a plan. You’ve got tools to compare offers clearly, rights to protect yourself, and haggling tips that work.

There’s no perfect provider. But there is a perfect plan for your situation — if you’re willing to do a bit of homework.

Solar and battery storage can give you real freedom — not just from rising bills, but from the stress of watching them. If you’re feeling stuck or unsure, reach out. Whether it’s decoding your bill or understanding how solar might help, we’re here to make it clearer — not sell you something.