Tesla has announced a recall of certain Powerwall 2 batteries sold between November 2020 and June 2022. A defect in cells supplied by a third party has been identified, and affected units are being replaced under warranty at no cost.
The recall doesn’t affect Powerwall 3, and Tesla has already discharged faulty units to make them safe. Here’s what you need to know if you own a Powerwall 2.
What’s Happening With the Tesla Powerwall 2 Recall in Australia?
Tesla has confirmed that a subset of Powerwall 2 units sold between 1 November 2020 and 30 June 2022 are affected by a manufacturing defect in battery cells supplied by a third party.
To address this, Tesla has launched a proactive recall. Every affected unit will be removed and replaced under warranty at no cost to the customer.
Affected Powerwalls in Australia and New Zealand have already been remotely discharged by Tesla, which renders them safe until replacement. The replacement process is being managed as part of Tesla’s normal warranty program, with product selection based on the site’s specific requirements.
Which Powerwall 2 Units Are Affected?
The recall only applies to a subset of Powerwall 2 batteries sold between 1 November 2020 and 30 June 2022.
Tesla has already identified the affected units. Customers with these batteries will see a notification in the Tesla app, while installers can confirm via Powerhub, where impacted systems appear with a “Powerwall Low Energy Lockout” alert.
If your Powerwall was purchased outside this date range, or if you own the Powerwall 3, you’re not affected by this recall.
Will My Solar System Still Work Without the Battery?
Yes. If your Powerwall 2 has been disabled, your solar panels will continue to generate electricity as normal. You’ll still be able to use that power in your home during the day.
What you won’t have during this period is backup power or the ability to store excess energy for night-time use. That functionality will return once the Tesla Powerwall 2 replacement unit has been installed.
How Do I Know If I’m Affected?
There are two simple ways to check:
For customers: Open the Tesla app. If your Powerwall 2 is part of the recall, you’ll see a notification explaining the situation.
For installers: Log into Powerhub. Affected systems will show an alert labelled “Powerwall Low Energy Lockout.”
If you don’t see an alert, your system isn’t impacted.
What is Tesla Doing to Fix It?
Tesla is replacing every affected Powerwall 2 at no cost to customers. The process is being managed through Tesla’s standard warranty program:
Remote discharge for safety – Most faulty units have already been disabled remotely.
On-site support – Tesla service teams are discharging the remaining units in person.
Full replacement – Affected Powerwalls will be removed and swapped for a new battery. The replacement model will depend on your site’s requirements.
Direct coordination – Customers are being contacted via the Tesla app, and installers are notified through Powerhub.
Tesla has stated that replacements are a priority and will be scheduled directly with certified installers.
The primary contact for processing replacements should be your original installer. If your installer is unavailable, contact the Tesla Support team via the below
Email: PWNoticeANZ@tesla.com
Phone: 1800 958 369
You don’t need to pay for anything — all replacements are covered under Tesla’s warranty.
Ever opened your solar app and thought, “What does any of this actually mean?”
You’re not alone. A lot of homeowners feel the same way after getting a solar battery installed. You’ve spent thousands on a top-tier system like the Sigenergy SigenStor, and now you’re staring at a dashboard filled with numbers, graphs, and flashing icons that don’t make much sense. The mySigen app from Sigenergy gives you detailed insights into your energy use — but only if you know where to look.
At Lenergy, we help customers across NSW make the most of their solar and battery systems. That includes showing you exactly how to use the tools that come with them. We’re not here to throw jargon at you or talk in circles — we’re here to keep things simple and clear.
In this guide, you’ll learn how to set up your Sigenergy mySigen app from scratch, what all the key stats mean, and how to spot when something’s off. No fluff. No tech-speak. Just simple straightforward instructions that help you stay in control of your energy.
What Is the Sigenergy mySigen App and Why Should You Use It?
The mySigen app is your control panel for the Sigenergy SigenStor battery system. It gives you a real-time view of how your solar, battery, and grid power are working together — all in one place.
Instead of wondering whether your battery is charging properly, or guessing how much power you’re drawing from the grid at night, the app shows you exactly what’s going on with your energy in plain numbers and graphs.
In short, it helps you take control of your energy — so you’re not just hoping your battery is working, you know it is.
How Do You Set Up the Sigenergy App?
Setting up the mySigen app is straightforward, like anything new, it helps to follow the steps in the right order.
Step 1: Download the mySigen App
Search for “mySigen” on the App Store or Google Play. Look for the Sigenergy logo and install the app.
Step 2: Create Your Account
Open the app and tap “Sign Up”. You’ll need to enter your email and create a password. Some installers (like Lenergy) may pre-register your system and provide you with login details.
Step 3: Pair Your System
You’ll be prompted to bind your device — this connects your app to your SigenStor system. You can do this by scanning the QR code on the inverter or entering the device serial number.
Step 4: Allow Notifications
Enable push notifications to receive alerts about system performance or faults.
Step 5: Explore the Dashboard
Once paired, the home screen will show live data for solar, battery, and grid.
What Does the Home Screen Show You?
When you open the app, you’ll see a visual dashboard of what’s happening in your system right now. Here’s what each section means:
Home Consumption: How much energy your household is using in real time.
Solar Generation: Live solar output from your panels.
Battery Status: Charge level, charge/discharge activity, and energy flow.
Grid Import/Export: Whether you’re drawing from or sending energy to the grid.
You don’t need to check this every hour — but doing a quick check once a day helps you understand your system’s rhythm.
How Do You Track Your Battery’s Performance Over Time via the mySigen app?
The app also shows historical data so you can track trends over time.
Daily / Weekly / Monthly Graphs: Compare your solar production, usage, and battery activity across time periods.
Charge Cycles: See how often your battery is filling and emptying.
Pattern Spotting: Learn when your battery typically charges, discharges, or runs out of stored energy.
This helps you understand how much of your solar you’re actually using — and when you’re relying on the grid.
What If the mySigen App Isn’t Working or Shows Weird Data?
Things to check:
Wi-Fi connection: The app needs a stable internet connection.
Refresh the app: Try closing and reopening it if data looks frozen.
Look for error messages: Common ones include “system offline” or “device not bound.”
If things still look off, take a screenshot and contact your installer. At Lenergy, we can remotely check for faults and confirm your system is working as expected.
Still Feeling Stuck? Here’s How Lenergy Can Help
Understanding the mySigen app isn’t about becoming a tech wizard — it’s about keeping tabs on your energy system so you can spot patterns, catch problems early, and make the most of what your solar and battery can do.
However, if you’re ever unsure about what you’re seeing in the app — or something just doesn’t look right — you’re not expected to figure it out alone.
At Lenergy, we’ve helped hundreds of homeowners get comfortable with their SigenStor systems. Whether it’s checking your app setup, reviewing your usage trends, or logging in remotely to confirm your system is working as it should — we’re here to back you up.
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.
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.
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
varies by inverter 3 kW (5 kWh) to 6 kW (10 kWh+), hybrid: up to 12 kW
Potential DC power up to 19.5 kW
Charging Rate
Matches output; depends on config
5 kW when AC coupled and up to 8 kW when DC Coupled
Solar Input
Hybrid version supports PV input (up to 18 kW)
20 kW with 3 MPPTs
Modularity
Yes — easily scalable
No — fixed size, expansion via separate “packs”
CEC Approved?
Yes
Yes
Monitoring
Local display + app (depends on model)
Tesla app (same as Powerwall 2)
Cooling & Noise
40 db (quieter)
Can be noisy typically < 50 db with a maximum of 62 db
Dimensions
Varies with setup
1105 × 609 × 193 mm, 130 kg
Round-Trip Efficiency
90%+ (varies by inverter)
89%
How They Handle Backup Power and Blackouts
Feature
Solix X1 (Hybrid)
Powerwall 3
Backup Power
Yes
Yes
Solar Charging During Blackout
Yes (Hybrid only)
Yes
Whole-Home Backup
Depends on config
Yes (single-phase only)
Blackout Switchover
Fast
Seamless
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.
Safety, Durability & Outdoor Performance
Feature
Solix X1
Powerwall 3
Chemistry
Lithium-ion Phosphate
Lithium-ion Phosphate
Fire Risk
Low
Low
Outdoor Rating
IP65/IP66
IP55
Operating Temp
–20°C to +55°C
–20°C to +50°C
Corrosion Resistance
C5-M rated (warranty excludes rust)
Flood resistant to 0.6m
Noise
Quiet (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
Feature
Solix X1
Powerwall 3
Mobile App
Yes (functional, improving)
Yes (polished, reliable)
Local Display
Yes
No
Real-Time Monitoring
Yes
Yes
Smart Automation
No
Yes (Opticaster)
Notifications
Yes (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 Size
Solix X1 (Hybrid)
Powerwall 3
13.5–15 kWh
$9,000
$13,929.06
Modular?
Yes
No
Includes Inverter?
Hybrid model only
Yes
Rebate Eligible?
Yes
Yes
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.
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
AtLenergy, 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?
Feature
Anker SOLIX X1
Sigenergy SigenStor
ESY Sunhome (HM6)
Battery Chemistry
LiFePO₄ (safe, long life)
LiFePO₄ (safe, long life)
LiFePO₄ (safe, long life)
Usable Capacity
5–30 kWh modular
5.2 kWh or 7.8 kWh per module, stackable up to ~48 kWh
5.12 kWh modules, expandable up to ~30.72 kWh
Power Output
3 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)
Scalability
Yes (modular, AC or hybrid)
Yes — modular stacking up to 48 kWh; parallel stacking also possible
Yes — modular up to ~30.72 kWh
CEC Approved?
Yes — for AC and hybrid models
Yes — 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 15kWh
From $12,000 for 16kWh
From $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.
AtLenergy, 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?
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.
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.
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.
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 / Territory
Approx. FiT Range (2025)
Notes
NSW
4.8–7.3¢/kWh
IPART benchmarks for all-day flat rates. Retailers typically offer between 4–10c/kWh, depending on tiered daily thresholds.
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.
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:
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.
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:
Scenario
Rate
Daily value
Quarterly 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)
7¢
$1.68
$151.20
Selling to grid (low FiT)
3¢
$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.
When your solar panels produce more energy than you need, you have two main options:
Export it to the grid and receive a feed-in tariff (FiT).
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.
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.
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.
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.
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.
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.
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.
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:
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 Timing
Price (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.
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.
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.
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.
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.
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:
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).
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.
Cable size and voltage drop
Longer cable runs require larger cable sizes to prevent voltage drop, which increases cost.
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.
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.
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.
There’s no universal “right” battery size. The best fit depends on two things:
Whether you already have solar or not
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
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.
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.
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.
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.
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.
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.
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.
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
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
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.
Compare to previous bills. If your export or usage data looks way off from last quarter or last summer, that’s a red flag.
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.
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.
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.
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 Date
Estimated STCs
Rebate Value @ $37/STC
December 2025
92
$3,404
January 2026
84
$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.
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.
