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Author: Donna Wentworth

Will Solar Rebates Drop in 2027?

If you wait until January, a typical solar and battery install costs you about $1,174 more. The solar panel rebate drops on 1 January 2027. The battery rebate drops on the same day, then drops again on 1 July. 

Nothing is being cancelled, the support just shrinks on a published schedule that runs to 2030. But wait for a larger system, or into the second half of 2027, and the loss can climb into the thousands. 

Installers are booked at least a month out, so time is tight if you want a system installed this year.

Here is what it costs.

  • How much the solar rebate falls in January
  • What the drop is worth on a typical 6.6kW system
  • The two battery step-downs coming in 2027
  • What a full solar and battery system stands to lose
  • Which date actually locks your rebate in

How much does the solar panel rebate drop in 2027?

The solar rebate is not a cash payment. It is a discount funded by small-scale technology certificates, or STCs. Your installer claims them and takes the value off your quote.

The number of STCs you get comes down to three things: system size in kW, your postcode zone rating, and the deeming period.

The deeming period is the bit that changes. It is the number of years of future generation the government counts upfront. In 2026 it is 5 years. In 2027 it falls to 4.

That is a 20% cut to your certificate count. Same system, same roof, fewer STCs.

This is not a one-off. The deeming period drops by a year every January until the scheme ends in 2030.

Bar chart showing the solar STC deeming period falling from 5 years in 2026 to 1 year in 2030.

What does the solar drop look like in dollars?

Say you are putting 6.6kW on a Sydney, Canberra or Brisbane roof. Those sit in Zone 3, with a rating of 1.382.

At an STC value of around $38:

  • 2026, 5 year deeming: 45 STCs, roughly $1,710 off your quote
  • 2027, 4 year deeming: 36 STCs, roughly $1,370 off your quote

A difference of about $340 on the same system.

Zone ratings vary by postcode, and some parts of NSW rate higher or lower than this example.

Bigger systems lose more. A 10kW system loses closer to $530 on the same maths, and a 20kW system loses over $1,000.

Comparison of the solar rebate on a 6.6kW system, about $1,710 in 2026 against about $1,370 in 2027.

Will the battery rebate drop in 2027 too?

It drops twice.

The Cheaper Home Batteries Program runs through the same STC system. Every kWh of usable battery capacity earns certificates, set by an STC factor. That factor used to move once a year. Since 1 May 2026 it moves every six months, and it falls faster than it used to.

  • May to December 2026: 6.8
  • January to June 2027: 5.7
  • July to December 2027: 5.2

The rebate is also tiered. Your battery is paid in bands, and each band earns less than the one before it.

  • First 14 kWh: 100% of the factor
  • 14 to 28 kWh: 60%
  • 28 to 50 kWh: 15%
  • Above 50 kWh usable: nothing

So a larger battery still earns more in total. It just earns less per kWh as it grows.

Chart showing how the battery rebate tapers by capacity, from 100% of the STC factor on the first 14 kWh down to nil above 50 kWh.

How much less is your battery rebate worth in 2027?

BatterySizeMay–Dec 2026Jan–Jun 2027Difference
Tesla PW313.5 kWh~$3,460~$2,890~−$570
Tesla PW327 kWh~$5,620~$4,710~−$910
Tesla PW340.5 kWh~$6,270~$5,240~−$1,030
SigenStor8 kWh~$2,050~$1,710~−$340
SigenStor16 kWh~$3,910~$3,270~−$650
SigenStor24 kWh~$5,170~$4,330~−$840
SigenStor32 kWh~$5,930~$4,980~−$950
SigenStor40 kWh~$6,230~$5,210~−$1,030
SigenStor48 kWh~$6,540~$5,470~−$1,060

Estimates only, rounded to the nearest $10. Based on an STC value of $38.00 as at 30 September 2026, and STC factors of 6.8 for May–Dec 2026 and 5.7 for Jan–Jun 2027. Support tapers by capacity: 100% of the factor to 14 kWh, 60% from 14 to 28 kWh, 15% from 28 to 50 kWh, and nil above 50 kWh. Your own figure will vary with the certificate price on the day and your battery’s usable capacity.

A 24kWh SigenStor, which is the size we use as a common reference for a family home, loses about $840 of rebate by moving from December to January.

Then it drops again on 1 July 2027.

Stacked bar chart comparing combined solar and battery rebates, about $6,880 in 2026 against about $5,700 in 2027, a loss of around $1,180.

Does the contract date or the installation date set your rebate?

The installation date. Nothing else.

Not the date you sign. Not the date you pay a deposit. Not the date the panels land on your driveway.

Your rebate is set by the date the system is installed and certified. A system commissioned on 31 December 2026 claims 2026 rates. The same system commissioned on 1 January 2027 claims 2027 rates.

This catches people out every year. A quote signed in November means nothing if the install slips past New Year.

If you are weighing this up, ask your installer for a commissioning date in writing, not a contract date. Read about mistakes to avoid before signing here.

So is it worth rushing?

Look, it depends on your situation.

If you were already planning a system for early next year, moving it forward a few weeks is worth a few hundred dollars for a typical solar install, and closer to a thousand on a decent battery. That is real money for the sake of scheduling.

If you are not ready, forcing it is the wrong call. A system that is not sized to suit your usage will cost you more over ten years than the rebate difference ever saved you. Learn how to size a solar battery to your household usage here.

Sometimes, for some homes, the numbers do not stack up yet. That is a fair answer too.

The rebate is not going away. It is stepping down on a schedule you can plan around. Install when your home is ready, and know what the date is worth.

Read next: Sigenergy vs GoodWe Battery: The Key Differences 

Frequently Asked Questions

How much will the solar rebate drop in 2027?

The deeming period falls from 5 years to 4, which cuts your certificate count by about 20%. On a 6.6kW system that is roughly $340 less off your quote.

Does the contract date or the installation date determine my solar rebate?

The installation and certification date. Signing a contract in 2026 does not protect you if the system is commissioned in 2027.

Will the Cheaper Home Batteries rebate also drop in 2027?

Twice. The STC factor falls from 6.8 to 5.7 on 1 January, then to 5.2 on 1 July.

Are the rebates ending in 2027?

No. Both schemes run to the end of 2030. The support reduces each year until then.

How To Safely Shutdown and Restart Your Sigenergy SigenStor Battery System

This is a guide on how to shut down your Sigenergy SigenStor battery. The job is simple once you follow the order. This guide shows you how to shut down and repower a SigenStor, step by step, whether your system has an AC isolator or uses the Sigenergy gateway.

The whole job is a short sequence of switches. You turn things off in order, then turn them back on in reverse.

This guide covers:

  • why you might shut down your Sigenergy SigenStor battery
  • the exact shutdown steps, in order
  • what to do if there is no AC isolator fitted
  • how to power the battery back on

Why would you shut down your SigenStor battery?

Most of the time your SigenStor just runs. You would only shut it down for a specific reason, such as:

  • electrical or roof work that needs the system fully off
  • a fault you are working through with support
  • an emergency where you need to isolate the system

Shutting down safely means powering the system off in the right order, then repowering it the same way in reverse. The steps below follow Lenergy technician Ziad, who runs through the process on a SigenStor we installed at Canyonleigh. Whether your home has an AC isolator next to the battery or uses the Sigenergy gateway comes down to how your system was set up on your battery install day. Both paths are covered below.

How do you shut down a Sigenergy SigenStor battery?

Work through these steps in order. This path is for a system with a battery inverter AC isolator fitted next to the battery. If yours does not have one, read the next section first.

Sigenergy SigenStor battery shutdown procedure label listing the four steps to shut down the battery.

Before you start: the PV array DC isolator can be very stiff, and that is normal. If it feels stuck, nothing is broken. You just need to turn it firmly until it clicks off.

  1. Turn off the battery inverter AC isolator next to the battery.
A hand switching off the battery inverter AC isolator, the first step to shut down the battery.

  1. Remove the plastic covers from the left-hand side of the battery.
Removing the left-hand plastic covers from the Sigenergy SigenStor battery to reach the isolators.

  1. Turn off the PV array DC isolator. It may also be marked as the DC switch. Turn it firmly, as it can be stiff.
Turning off the PV array DC isolator inside the Sigenergy SigenStor as part of the shutdown procedure.

  1. Press and hold the red button on the battery for about 5 seconds, until you hear a click.
The red power button on the Sigenergy SigenStor, held for about five seconds to power the system down.

Your system is now powered down.

What if there is no AC isolator fitted?

Some systems do not have an AC isolator next to the battery. If that is yours, you use the Sigenergy gateway instead. Only the first step changes.

In place of step 1 above:

  • Find the Sigenergy gateway.
  • Press the button on the gateway in and rotate the handle towards the wall to unlock it.
Opening the Sigenergy gateway to reach the inverter main switch when shutting down the SigenStor battery
  • Open the door and turn off the inverter main switch.
Switching off the inverter breaker in the gateway during the Sigenergy SigenStor battery shutdown.

Your system is now powered down.

How do you power the battery back on?

Turning the system back on runs in reverse. Work through it in this order:

  1. Press and hold the red button on the battery for 3 seconds.
  2. Turn on the PV array DC isolator.
  3. Turn on the battery inverter AC isolator. If there is no AC isolator, go to the gateway and turn on the inverter main switch instead.

Give it about 5 minutes to power back up. You can confirm it is back online in the mySigen app.

The round red button on a Sigenergy SigenStor, showing information on the battery.

Once the system is on, refit the plastic covers on the left-hand side of the battery. That is the shutdown and restart done.

If you get stuck at any point, Lenergy’s customer support team can talk you through it.

Want to know more about battery safety at home? Read our guide on whether solar batteries are safe.

Frequently Asked Questions

What is the correct order to shut down a Sigenergy SigenStor battery system?

Turn things off in this order: the battery inverter AC isolator next to the battery, then remove the left-hand plastic covers, then the PV array DC isolator, then press and hold the red button on the battery for about 5 seconds until it clicks. That powers the system down. If there is no AC isolator, you turn off the inverter main switch in the Sigenergy gateway in place of the first step.

What do I do if there is no AC isolator fitted next to my SigenStor battery?

You use the Sigenergy gateway instead. Find the gateway, press the button in and rotate the handle towards the wall to open it, then open the door and turn off the inverter main switch. After that, follow the same steps as any other system: remove the left-hand covers, turn off the DC isolator, and hold the red button until it clicks.

How long does a Sigenergy SigenStor battery take to restart after shutdown?

After you turn everything back on, give it about 5 minutes to power back up. Once it is on, refit the left-hand covers. If it does not come back after a few minutes, check that the DC isolator and the AC isolator or gateway main switch are fully on, then contact Lenergy support if you are still stuck.

Is it safe to shut down my Sigenergy battery myself?

Yes, for the shutdown and restart steps in this guide. You are only switching isolators and holding a button, not touching any wiring. Take care, work in the right order, and if anything looks wrong or you are unsure, leave it and call Lenergy support rather than forcing it.

Australia to Set New Rules for Solar, Batteries and Inverters 

Right now, an inverter approved in one state can be a problem in the next one over. Same product. Different rulebook. Different paperwork.

That’s being replaced with one national set of rules.

In September 2026, Australia’s energy ministers endorsed the Consumer Energy National Technical Regulatory Framework, covering 2026 to 2029. It sets one national standard for the technical side of rooftop solar, inverters, home batteries and EV chargers. Nothing changes on your roof today. Nothing you’ve already installed gets caught out.

Here’s what this article covers:

  • What the new framework actually is, in plain terms
  • Whether your existing system is affected
  • What changes when you go to buy
  • What it means if you’re in the trade
  • When any of it starts

What are Australia’s new solar and battery regulations for 2026?

The framework covers what the government calls consumer energy resources. That’s the gear sitting on and around your house that makes or stores power: panels, inverters, batteries, EV chargers, and some connected appliances like air conditioners and hot water systems.

Until now, the technical rules for that gear have been set state by state, and network by network. A manufacturer selling into Australia has had to build for several different sets of requirements.

The framework says that costs everyone money. Manufacturers either wear the cost of multiple versions, pass it on, or walk away from the market entirely. Fewer options on the shelf. Higher prices on the ones that stay.

So the fix is a single National CER Technical Code. One baseline, written by the federal department, updated every two years with the minister’s sign-off.

Now, states and territories can still add their own requirements on top of that baseline. The national rules set the floor, not the ceiling.

Split panel comparing today's state-by-state technical rules for solar and batteries with a single national baseline under the new framework, noting that states can still add their own requirements.

Will the new rules apply to the system I already have?

No. This is the part worth being clear about.

The framework does not apply retrospectively. It will not cover devices installed before the first mandated requirements start for that type of product.

Read that last bit carefully, because it’s more specific than “existing systems are safe.” The start dates get set per product type, inside the Code. Batteries will have their own date. Inverters will have their own date. EV chargers, their own.

What it means in practice: your system gets judged against the rules that were in place when it went in. If you install a battery in November and the battery requirements don’t kick in until two years later, your battery isn’t retrofitted into the new regime.

The same goes for anything you buy during the changeover. The regulator has said plainly that buying and installing now is not affected while the transition happens.

Three timelines showing home batteries, inverters and EV chargers each getting their own separate mandatory start date, with systems installed beforehand judged against the rules in place at the time.

What actually changes when you go to buy?

Three public lists. That’s the practical upshot for a homeowner.

A Regulated Product List. Every certified product approved for sale, installation and connection across the country. One list instead of a dozen state ones.

An Accredited Installer List. Every installer accredited to fit those products, with their accreditation current.

A Registered Supplier List. Every supplier registered to sell into Australia.

Say you’re getting three quotes. Today you’re largely taking each company’s word on whether the gear is approved where you live. Under the new system you check the model against one list, and the installer against another.

Products will also need independent testing and certification before they can be sold. Not a self-declaration. Tested by someone else, then listed.

Three cards showing the public registers coming under Australia's new solar and battery regulations: the Regulated Product List, the Accredited Installer List and the Registered Supplier List.

What does this mean if you’re in the trade?

The weight lands on suppliers, not installers. That’s deliberate.

Suppliers will have to register, get each product certified before it can be sold in Australia, register firmware versions before releasing them, and feed installed device information back to the regulator. They also can’t commission a job done by an unaccredited installer, or one using a product that isn’t on the list.

The framework’s reasoning is straightforward. Installers fit the hardware. They have no control over the firmware that determines whether a device keeps meeting its requirements six months later. So the ongoing compliance obligation sits with the party that controls the software.

Installers still need accreditation, plus continuing professional development and a current trade licence. Solar Accreditation Australia doesn’t disappear. Under the framework it becomes one of the bodies that can recommend installers for national accreditation, alongside suppliers and state accreditation bodies. Existing training and accreditation can be recognised where it lines up with the Code.

Comparison showing suppliers carrying six new obligations including product certification and firmware registration, against three for installers, because suppliers control the firmware.

When do the new rules start?

Nobody can give you a date yet, and you should be suspicious of anyone who does.

The framework is a policy document. Legislation still has to pass to establish the regulator and make any of the obligations enforceable. The Clean Energy Regulator will take on the role of national technical regulator, subject to that legislation.

After that, each product type gets its own transition period, then its own mandatory date, set through the Code. The Code hasn’t been published.

So the honest answer is: endorsed, not yet law, rolling out progressively across 2026 to 2029.

Roadmap showing the framework endorsed in 2026, followed by three stages with no set dates: legislation passing, the National CER Technical Code being published, and requirements becoming mandatory product type by product type.

Well, what should you do with that? Not much. If a system stacks up for your household on today’s numbers, it stacks up. Waiting for a rulebook that explicitly won’t apply to you backwards is waiting for nothing.

If you’re sizing a system now, the thing that matters is still whether it’s built to offset your usage properly.

Read next: NSW Leads Push for Mandatory Solar Panel Recycling

Frequently Asked Questions

What is the Consumer Energy National Technical Regulatory Framework?

It’s a national policy framework endorsed by Australia’s energy ministers, running 2026 to 2029. It creates one set of baseline technical rules for rooftop solar, inverters, home batteries, EV chargers and some connected appliances, replacing the current state-by-state approach.

Who will enforce Australia’s new solar and battery technical standards?

The Clean Energy Regulator, taking on a new role as the Consumer Energy National Technical Regulator. That’s a new function of an existing body, not a new agency. It will certify products, accredit installers, register suppliers and investigate breaches, subject to legislation. The technical rules themselves are written by the Department of Climate Change, Energy, the Environment and Water.

Will the new rules apply to solar panels and batteries I already have installed?

No. The framework does not apply retrospectively. It won’t cover devices installed before the first mandated requirements begin for that product type. Systems going in during the transition aren’t affected either.

NSW Leads Push for Mandatory Solar Panel Recycling

NSW is moving on mandatory solar panel recycling. On 21 September 2026 the Government released a draft regulation that would make panel brand owners pay to collect and recycle their own products. 

Not homeowners. The companies that sell the panels.

It is a proposal for now, with consultation open. It is also the first scheme of its type in the country, and it is good to see the industry getting some structure around this.

What this article covers:

  • What NSW has actually proposed
  • Why old panels are becoming a problem
  • How the scheme would work
  • Where the national picture sits
  • What it means if you already own solar

What has NSW actually proposed?

A mandatory product stewardship scheme. Product stewardship means the business that puts a product on the market carries responsibility for what happens to it at end of life, rather than the customer or the council.

The draft is the Product Lifecycle Responsibility Amendment (Photovoltaic Panels) Regulation 2026, sitting under the Product Lifecycle Responsibility Act 2025. 

Environment Minister Penny Sharpe put the aim plainly: making sure those panels do not become tomorrow’s landfill problem.

Submissions close at 5pm on Monday 16 November 2026. The regulation is expected to commence sometime in 2028.

Why are old solar panels becoming a problem?

Volume.

Column chart showing NSW solar panel waste rising from 14,000 tonnes in 2026 to a projected 89,000 tonnes by 2045.

NSW carries more than 1.18 million rooftop solar systems. Around 14,000 tonnes of panels reach end of life here every year, projected to reach 89,000 tonnes by 2045 as the first wave of rooftop systems retires, according to the NSW Government. Nationally, Australia is expected to generate around one million tonnes of panel waste by 2035. Roughly 50 million panels.

Only about 17% of end-of-life panels are recycled today.

Most of the rest goes to landfill. Victoria is the only state with an outright ban on panels going to landfill, in place since 2019.

A panel is worth recovering. There is aluminium, glass, silicon, copper and silver inside one. Degraded panels also carry small amounts of lead and chromium, which is a second reason to keep them out of the ground. 

Exploded diagram of a solar panel showing the glass, silicon, copper, silver and aluminium frame recovered in recycling.

How would the scheme work?

Brand owners, meaning the manufacturers and importers who supply panels into NSW, would have to join a product stewardship organisation. That organisation lodges an action plan with the EPA covering collection points and public awareness, then runs the network.

Flow diagram of the NSW solar panel recycling scheme: brand owner, stewardship organisation, collection network, recovery.

Where no such organisation exists for a panel type, the brand owner carries the obligations on its own. Non-compliance is an offence under the Act, and the EPA can publish which brand owners are meeting their obligations and which are not.

Scope is narrower than people assume. The draft covers monocrystalline and bifacial panels, rooftop and utility-scale. Portable panels, cables, inverters and batteries sit outside it.

Grid showing which panels the NSW solar panel recycling scheme covers, and which products sit outside its scope.

The same Act already covers batteries. That scheme starts on 1 October 2026, and panels would work the same way.

What is happening nationally?

Slower going.

In January 2026 the federal government announced a 24.7 million dollar National Solar Panel Recycling Pilot. Around 100 collection sites, up to 250,000 panels, designed to gather the data for a future national scheme. Lifting recycling rates nationally was costed at up to 7.3 billion dollars in benefits.

The pilot has not started yet. The process to appoint an administrator was suspended in May 2026 over an undisclosed complaint, as reported by the Guardian. Eight solar recycling companies have since written to ministers warning that some operators may not survive the wait.

That is why the NSW move matters. Waste and recycling industry bodies welcomed it, pointing to the certainty a legislated scheme gives recyclers who need to invest in equipment and sites.

Timeline of solar panel recycling policy from the January 2026 federal pilot to the NSW regulation commencing in 2028.

What does this mean if you already own solar?

Nothing changes today. Nothing to pay, nothing to do.

When your system does reach replacement, the rule is simple. Panels should not go in general waste, and a decent installer takes the old ones away as part of the job. Specialist recyclers can recover a high share of a panel’s weight.

For businesses, the change is bigger. Decommissioning a commercial or C&I array produces panels by the pallet, and a funded collection network makes that far easier to handle than it is now. Worth factoring into anything you are planning to build past 2028.

If you are in the ACT or Queensland, none of this binds you yet. States tend to follow each other on waste rules, so expect the question to come up.

For now, a scheme that puts the cost where the product came from is a sensible piece of work.

Read next: Will Data Centres Make Your Power Bill Go Up?

Frequently Asked Questions

What is NSW’s mandatory solar panel recycling scheme?

A proposed regulation that would require solar panel brand owners to fund the collection and recycling of their products at end of life. It is out for public consultation now, with submissions closing 16 November 2026.

When will the NSW solar panel recycling scheme start?

The regulation is expected to commence in 2028. That is a legislated future start date, not a live scheme, so nothing changes for households in the meantime.

What materials can be recovered from recycled solar panels?

Aluminium from the frame, glass, silicon, copper and silver. Recovering these at scale supports local recycling and reduces the need for new raw material.

Why are solar panels a growing waste problem in Australia?

The early wave of rooftop installs is reaching end of life at the same time as the fleet keeps growing. NSW alone produces around 14,000 tonnes a year now, rising to a projected 89,000 tonnes by 2045.

How does NSW’s scheme compare to the federal recycling pilot?

The federal pilot is voluntary and designed to gather data, with no mandate attached. NSW’s proposal is a binding obligation on brand owners with penalties for non-compliance.

How a Moss Vale Homeowner Went Fully Self-Sufficient with Solar and Battery

Harry Coomans’s Moss Vale home makes more power than it uses. He’s self sufficient, sitting in credit, and charging an electric car for next to nothing on a system that grew with his home. This is one homeowner’s honest Moss Vale solar review, and a look at what a solar and battery installation in Moss Vale can do once it is built around how a house actually uses energy.

Harry’s system did not arrive all at once. He started with solar, added a battery, then more panels, and ended up covering almost everything, including his car.

This article covers:

  • what Harry bought, and why he kept adding to his system
  • the results he has seen, in his own words
  • what the Lenergy install team was like
  • his honest take on price, value and getting the most from solar

Why did Harry choose Lenergy for solar in Moss Vale?

It started small. “I first found Winston because I needed some solar panels for a little solar project I was doing in my backyard,” Harry says. “He was happy to help me with that, and that led to a relationship now for the last two years.”

Harry’s first solar system went in back in 2019, so he was not new to it. What he wanted for the next step was someone local he could trust. “It’s good to support somebody in the local area,” he says. That mattered to him more than finding the cheapest quote.

Aerial view of a small backyard building with rooftop solar panels, part of a home solar installation in Moss Vale.

What did Harry buy, and why did he keep adding to it?

Harry already had good solar and good data. Through his monitoring he could see one clear problem. “The most wasteful thing was that I couldn’t use everything I was generating,” he says. Plenty of power, nowhere for it to go.

That is what led him to storage. A battery let him keep the surplus instead of losing it. From there he added more panels and, later, an electric car. Read more about Buying a Solar Battery here.

The result is a home that stands on its own. “We’ve got two solar systems, we’ve got the battery, we’ve got the whole thing, and we’re self-sufficient, which is just fantastic,” Harry says. He still has spare energy on top of that.

What results has Harry seen since going solar?

The headline result is simple. “We’re self-sufficient, so we’re now in credit,” Harry says. His bills went from a cost to a small return.

The electric car is where it really shows. “I’ve had the Tesla car now since April, and in all those months I’ve done 8,000 kilometres,” he says. “I wouldn’t have spent any more than $100 on electricity just to keep the car charged.”

There was a knock-on effect too. With the extra panels in, Harry says he cut his gas use over the colder months. “I’ve been able to reduce my gas bill over this winter by about 25 per cent.”

Aerial view of a large Moss Vale home with several rooftop solar panel arrays across a grey roof.

What was the Lenergy installation team like?

Harry likes to understand how things work, and the install gave him room to. “We had Ziad, who was an installer, a young guy,” he says. “Because I was a bit of a sponge, I wanted to know stuff.” He got his answers on the day.

The basics were handled well too. “The boys went up, put the panels on and cleaned up after themselves,” Harry says. For him, that came back to the kind of company he was dealing with.

Was it worth paying a bit more?

Harry was upfront that Lenergy was not the cheapest option. “We did get a couple of quotes,” he says. “Lenergy wasn’t the most competitive price, but the confidence I had in them, I didn’t mind paying a little bit extra.”

Looking back, he counts it as money well spent. “If I look at the amount we’ve invested in the battery, the solar system and the electric car, I’m earning a better rate of return than I was with my money on term deposits,” Harry says. 

A young installer on a rooftop, wearing a safety harness and using a drill during a solar panel installation.

What is Harry’s advice for other Moss Vale homeowners?

Harry’s tip is about effort, not gear. “You don’t have to get totally involved. Once you put a solar system in, it sort of takes care of itself,” he says. His one tip: “If you really want to maximise what it offers, spend a little time to understand your house and how you use your energy. It’s very worthwhile.”

That is what took his own setup from good solar to fully self-sufficient.

Read next: 5 Things To Do If You Are Considering Solar

Frequently Asked Questions

Is Lenergy a reputable solar installer in Moss Vale?

Harry’s experience says yes. He chose Lenergy partly to support a local business, found the team easy to deal with, and rated the workmanship, noting the installers cleaned up after themselves. He also valued being able to ask questions and get straight answers on install day. He was clear that Lenergy was not the cheapest quote he received, but he felt the confidence he had in them was worth a little extra. As with any installer, check they are accredited with Solar Accreditation Australia (SAA) and ask for references before you commit.

How much can I save with solar and battery storage in Moss Vale?

It depends on your home, your usage and your current bills, so there is no single figure. Harry’s own results give a sense of what is possible: his home is now in credit, he has charged an electric car for close to nothing over about 8,000 kilometres, and he cut his winter gas use by about 25 per cent after adding more panels. Those are his numbers, not a guaranteed outcome. The biggest gains tend to come when you store your surplus solar and shift more of your usage into the times your system is producing or your battery is full.

What is the best solar battery system for homes in the Southern Highlands?

The right battery depends on how much power you use and when you use it. For Southern Highlands homes, Lenergy recommends the Sigenergy SigenStor, which combines storage and solar management in one system and scales as your needs grow. It suits households like Harry’s that want to store surplus solar, run an electric car, and lean less on the grid over time. The best size and setup is worth working through with your installer rather than guessing.

Can a CEC-Approved Battery Lose Approval After Installation?

On 15 September 2026, seven battery models lost their spot on the approved products list. A CEC approved battery is not approved for life. The listing is a live status. It can be suspended, and it can be pulled.

If your battery was installed before the suspension date, you are fine. The system keeps running. The rebate stays yours. The people who need to pay attention are the ones who have paid a deposit and are still waiting on an install date.

This article covers:

  • What a CEC battery suspension actually is
  • Why it is not a safety recall
  • What happened with the seven Neovolt models
  • Where your rebate stands
  • How to check your own battery in two minutes

What does a CEC battery suspension actually mean?

The Clean Energy Council keeps the approved products list. Sitting on that list is how a battery qualifies for the federal rebate through Small-scale Technology Certificates, or STCs. That is the discount your installer takes off the quote up front, covered in more detail in how the battery rebate changed in May.

Two things can happen to a listing.

A suspension is temporary. The manufacturer gets up to three months to fix the problem. Sort it out and the listing comes back.

A de-listing is permanent. The product is removed and the manufacturer applies again from scratch.

The CEC calls it a dynamic list. Think of approval less like a certificate on the wall and more like a registration. It has to stay current.

Is a CEC suspension the same as a safety recall?

Split panel comparing a CEC battery suspension, which is a compliance issue with a three month window to fix it, against a safety recall, which tells owners to stop using the product.

No. They are separate things, and the difference matters.

Most suspensions come down to paperwork. A test certificate expires. A label does not match the documents on file. A manufacturer is slow answering questions.

A recall is a safety action. If a product is recalled, you are told to stop using it. Nobody is telling Neovolt owners to do that.

Why were seven Neovolt models suspended?

Bytewatt Technology, trading as Neovolt, had seven models flagged. BW-BAT-9.6P, plus variants I through VI. Industry was notified on 7 September 2026. The suspension took effect on 15 September 2026.

Reference card listing the seven Bytewatt Neovolt battery models suspended from the CEC approved products list on 15 September 2026.

The CEC gave three reasons. The IEC 62619 certificate used to approve variants I to VI is no longer valid. Nameplate labels on units supplied in Australia did not match the testing and certification documents originally provided. The manufacturer could not clearly distinguish which imported variants were which.

The CEC stated the decision was not based on a product recall or any identified safety issue.

Bytewatt has until 14 December 2026 to complete corrective action. Fix it and the suspension lifts. Miss it and the models are de-listed for good.

Timeline of the Neovolt battery suspension, from industry notification on 7 September 2026 to the corrective action deadline on 14 December 2026, branching to either a restored listing or permanent de-listing.

Does a CEC suspension affect a battery that is already installed?

No. Rebate eligibility is set on the installation date. If your install was completed before the suspension took effect, your STCs were already created and they stay valid.

Your battery does not stop working. Your warranty sits with the manufacturer, and a listing change does not cancel it.

One caveat worth knowing. The Clean Energy Regulator holds a separate power to deem products ineligible where they were listed using false or misleading information.

Comparison showing a CEC approved battery installed before the suspension keeps its rebate, while a battery ordered but not yet installed loses it.

What if you have ordered a battery but have not been installed yet?

This is where it hurts.

Eligibility runs off the install date. Not the order date. Not the delivery date.

Say you paid a deposit in August, with the rebate already taken off your quote. Your install is booked for October. If the model is suspended in the meantime, that rebate is gone on install day. Someone has to wear the difference.

Networks can refuse the product too. Some distributors rely on the CEC list for connection approval. State schemes lean on the same list, as covered in what the new PDRS rules mean for solar batteries.

So ask your installer to confirm the exact model number is on the current list before install day. Not the brand. The model number.

How do you check if your battery is still CEC approved?

Find the model number. It is printed on the unit and listed on your installation paperwork.

Match it against the current CEC approved batteries list, then check the product suspensions and de-listings page.

Check the model, not the brand. A manufacturer can have some models listed and others suspended at the same time. Neovolt is the proof.

Now, a cheap battery quote is cheap for a reason. Something has been left out of the price. Neovolt sat up to nearly a third below comparable known brands, and seven suspended models are what that discount looks like when it catches up with you. Valid certification and local support cost money. If a quote undercuts everything else by thousands, that gap is the thing to ask about. Read more about the problem with cheap battery quotes here.

Two questions before you sign, whether you are in NSW, the ACT or Queensland. Who backs the warranty here in Australia? How long has this exact model held its listing?

Read next: Sigenergy vs GoodWe Battery: The Key Differences

Frequently Asked Questions

What does it mean when a battery is suspended from the CEC approved products list?

It means the product has temporarily lost its listing while the manufacturer fixes a compliance problem. During the suspension the model cannot be used for new STC rebate claims. The manufacturer has up to three months. Fix it and the listing returns. Miss the window and the product is permanently de-listed.

Will I lose my solar rebate if my battery loses CEC approval after installation?

No. Eligibility is determined on the installation date. Certificates created for a completed install stay valid if the product is suspended later. The risk sits with people who have ordered but not yet been installed.

How long does a manufacturer have to fix issues before permanent CEC delisting?

Up to three months from the date the suspension takes effect. For the Neovolt models suspended on 15 September 2026, that window closes on 14 December 2026.

Is a suspended battery still safe to use?

A suspension is a compliance action, not a safety recall. In the Neovolt case the CEC stated the decision was not based on a recall or any identified safety issue. If a genuine safety problem is found, a recall is issued separately and you would be told directly.

Solar for Renters: Are Plug-In Systems the Answer? 

Solar for renters has sat in the too-hard basket for years. No roof of your own. No say over what goes on it. No simple way to cut a bill that keeps climbing.

That is starting to shift. Every state and territory has now agreed to work with the Commonwealth to make plug-in solar and batteries legal in Australia.

Nothing is legal yet. No product is on the shelf. There is real work to get through first.

Still, this is the first firm commitment from the people who can actually change the rules.

This article covers:

  • What the energy ministers have agreed to
  • How plug-in solar works, and why it suits renters
  • When it could become legal here
  • What a system might save you
  • What still has to be sorted out

What have the energy ministers actually agreed to?

Climate Change and Energy Minister Chris Bowen announced this important update for renters.

Lots of renters and people who live in apartments have raised with me that it’s not easy to get the benefits of solar and batteries. And they are right. I am really pleased that the states and territories have all agreed to work with us to make “plug in” solar and batteries legal in Australia. This will open up new choices for renters and people in apartments. There’s a lot more work to do but this is a huge step towards more cost of living relief for renters.

This is a good step in the right direction to opening up a pathway for renters to have easy access to the savings solar provides.

There is plenty of work ahead, as Bowen says himself, but the direction is the right one.

What is plug-in solar, and how does it work?

Plug-in solar, also called balcony solar, is about as simple as solar gets.

You get a compact panel, or a pair, rated around 600 to 800 watts. It connects to a small inverter or battery unit. That unit plugs into an ordinary power point.

An inverter is the box that converts power from a panel into the type of electricity your appliances can actually use. Every solar system has one.

No sparky. No roof work. No holes in someone else’s house.

The power feeds into your home circuit and offsets your usage while the sun is up. Fridge, router, standby load, whatever is running. It gets served by the panel first, so you buy less from the grid.

Moving out? Unplug it and take it with you. That is the part that makes it work for renters.

Diagram of a plug-in solar system: panel, inverter or battery unit, standard power point, then household appliances.

This is not new technology. Germany has been running it for years, with roughly one in ten households now using a system. Great Britain legalised plug-in solar in September 2026. New Zealand has committed to doing the same within twelve months.

Plug-in solar status in Germany, Great Britain, New Zealand and Australia, with Australia the only one not yet legal.

We covered the hardware in detail last time, including Sigenergy’s SigenMate 2700 Ultra, a plug-in battery already selling in Europe and not available here.

When will plug-in solar be legal in Australia?

No exact date has been set. 

The federal government has committed to working with the states and territories to identify what is needed for safe use, then report back on next steps by the end of 2026.

That report is the next real milestone. It is not legalisation. It is the piece of work that spells out what legalisation would take.

Advocacy group Solar Citizens is pushing for a firm legal date of 1 July 2027. That is their ask, not a government commitment. Worth keeping those apart when you see mid-2027 quoted.

Timeline of plug-in solar in Australia: not legal now, government report due end of 2026, July 2027 campaign target.

How much could a plug-in system save a renter?

Say you run an 800 watt setup on a balcony that gets decent sun. Reported estimates put the savings at roughly $300 to $400 a year. Add a small plug-in battery and that figure roughly doubles, because you store the cheap daytime power instead of feeding it back for next to nothing.

Systems overseas cost up to $1,300. Payback sits somewhere between four and ten years depending on whose numbers you read. 

Now, is this a replacement for a proper rooftop system? No. An 800 watt panel is a fraction of a standard install. It will not run your house, and for some homes the maths will not stack up.

For a renter paying full retail on every kilowatt hour, though, a few hundred dollars a year back in your pocket is not nothing.

Bowen has also stated that plug-in systems meeting the safety standards would be covered by the existing Cheaper Home Batteries Program and the Small-scale Renewable Energy Scheme. Details have not been worked through.

Chart comparing estimated annual savings for renters from a plug-in solar panel alone and with a small battery added.

What still has to be sorted out?

Four things, roughly.

Standards. AS/NZS 4777 governs grid-connected inverters and has no plug-in category at all. A pathway has to be written into it.

Product approval. Someone has to certify these units and publish an approved product list, the way rooftop gear is handled now.

Tenancy and strata. Rules need updating so a landlord or an owners corporation cannot unreasonably refuse.

Safety. Anti-islanding is the main one. That is the function that shuts a system down when the grid goes out, so nobody working on the line gets hurt.

Whyis it taking so long to get all this sorted? Glen Morris, who sits on the Standards Australia committees covering this equipment, argues the blocker was never safety. Europe sorted the technical side years ago. The real problem is that nobody in this country had the authority to say yes. Standards bodies wait on regulators. Regulators wait on standards. Networks will not connect a device that is not on a list.

That deadlock is exactly what the ministers’ agreement is meant to break.

Four changes needed before plug-in solar is legal in Australia: standards, product approval, tenancy rules and safety.

What can renters do in the meantime?

Three things are worth a look while the rules catch up.

Talk to your landlord. Plenty of owners will consider solar and a battery on a rental, particularly with the rebates currently on offer.

Check your electricity plan. If you are wanting some tips on how to choose a retailer you read about it in our recent article here.

If you are in an apartment, a shared system is already possible, and more incentives are coming.

None of these is plug-in solar. Each chips away at the same problem from a different angle.

Read next: Queensland’s solar for renters rebate explained

Frequently Asked Questions

What is a plug-in or balcony solar system and how does it work?

It is a compact solar panel, usually 600 to 800 watts, connected to a small inverter or battery unit that plugs into a normal power point. No electrician and no roof work. The power offsets whatever your home is using at the time, so you draw less from the grid. It is not fixed to the building, so it moves with you.

Do renters need landlord permission to install plug-in solar panels?

There is no answer to that yet, because no plug-in system is legal to use here. Tenancy and strata rules are one of the specific things the governments have said they need to work through. A freestanding unit sitting on a balcony raises different questions to anything bolted to a wall, and that distinction has not been settled.

When will plug-in solar systems be legal and available in Australia?

No date has been set. The federal government is due to report back on next steps by the end of 2026. Solar Citizens is campaigning for legal status by 1 July 2027, though that is a campaign target rather than a government commitment.

Why did Andrew go solar in Mittagong?

Two things pushed him. Rising bills, and a nudge from home.

Power prices had been climbing, and Andrew wanted to take some of the sting out. Cutting his emissions mattered too. “Helping the environment a bit,” as he put it, with his daughter “in my ear about that.” Both reasons landed him on solar as the sensible next step.

If you’re weighing the same call, it helps to work out what size solar system you actually need before you ask for quotes.

What was the quoting process like?

Short, because Andrew had already made up his mind.

“I didn’t receive any quotes from anyone else, because I kind of knew how good Lenergy were,” he said. Word of mouth did the work. People he knew had used Lenergy and rated the job. “I just wanted to get Lenergy to do it.”

Aerial view of a home surrounded by trees in Mittagong, a typical Southern Highlands setting for a solar installation.

How was the site visit?

Winston came out and walked Andrew through the whole thing, start to finish.

They talked through how the system works and the app Andrew would use to keep an eye on it. Winston also flagged a couple of tree branches near the roof. Clearing them would lift the system’s output, so it was worth doing. If you’re not sure how much difference nearby trees make, our guide on how much shade affects solar panels breaks it down.

Then there was the design. Winston placed the panels for the best result on Andrew’s roof. “He put them in the best spot he could to get the optimum capacity out of it,” Andrew said. 

What was the install team like?

Easy to deal with from the first phone call, and tidy on the day.

Andrew found the office team simple to talk to, and the on-site crew just as good. The job came back “neat and tidy.” The part that stuck with him was reliability. “They were there when they said they’d be there, which is awesome. You don’t always get that.”

Lenergy installer working on a metal roof during a solar installation in the Southern Highlands.

What happened to Andrew’s power bill?

It came down, and that matters more with prices still rising.

Andrew’s bills had jumped just before he went solar, in line with the wider increases across NSW. Since the system went in, the bills have dropped noticeably. That saving now goes towards paying off the system itself. “That will help to pay for the system moving forward,” he said. For a sense of the numbers in general terms, see our guide on how much you can save with solar panels.

Would Andrew recommend Lenergy?

Without hesitation.

“I don’t hesitate to throw Lenergy’s name up, because I know they’ll do a good job,” he said. He points people to Lenergy whenever solar or batteries come up. For him, the best part was simple. “Just a really nice bunch of people, from front office to the people that do the work.” If a home battery is on your radar too, it’s worth understanding how storage fits alongside your panels.

Thinking about solar for your own place? Read next: is your home ready for solar panels?

Frequently Asked Questions

Is solar worth it in the Southern Highlands?

For most homes, yes. Electricity prices in NSW have been rising, and a rooftop system offsets a good share of your daytime use. Andrew’s experience in Mittagong is a fair example: bills that had climbed came down after his system went in, and the saving now helps pay off the system. Your result depends on your roof, your usage and any shading, which is why a proper site visit matters.

How do I choose a solar installer?

Look for an installer accredited with Solar Accreditation Australia (SAA), then check their track record locally. Andrew skipped other quotes because people he knew had used Lenergy and rated the work. Word of mouth, a clear site visit, and a crew that turns up when they say they will are all good signs. Ask how they position the panels and how they handle anything, like nearby trees, that could affect output.

How much can solar cut my power bill?

That varies by system size, household usage and how much power you use during the day. Andrew’s bills dropped noticeably after his install, though he didn’t quote a figure, and he treats the saving as money going back into paying off the system. For a general sense of the range, see our guide on how much you can save with solar panels.

Why Is My Winter Electricity Bill So High in Southern NSW and the ACT?

In Southern NSW and the ACT the winter electricity bill climbs because we use more power at the worst possible time. Heaters work harder. Hot water runs longer. The sun clocks off early and most usage lands in the evening, the most expensive time of day to be pulling from the grid. After dark your tariff charges it’s peak rate.. so more power, right when it costs the most. The good news…it’s fixable. 

This article walks through each one, so you know what is worth changing and what is not:

  • The heating settings costing you the most
  • Why draughts make your heater work twice
  • What cold water does to your hot water bill
  • Why your solar cannot keep up in June
  • A checklist for the loads you have forgotten
Bar chart comparing a summer and a winter electricity bill. Household usage rises sharply in winter while solar production falls to around half its summer level.

Is my heater the reason my power bill is higher in winter?

Usually, yes.

Heating is the biggest single driver of winter energy costs in Australia. energy.gov.au says every extra degree can add 5 to 10% to your bill. They recommend 18 to 20 degrees. Plenty of homes sit on 25.

The worst offenders are the cheap ones. Plug-in fan heaters, oil column heaters, bar radiators. Cheap to buy, expensive to run, because they turn electricity straight into heat.

Say you run a 2 kW plug-in heater for five hours. That is 10 kWh before anything else is counted. At 35 cents a kilowatt hour, that heater costs you $3.50 a night. Run two and you are at $7 before the kettle goes on.

Cost breakdown showing a 2 kilowatt plug-in heater run for five hours uses 10 kilowatt hours, which comes to $3.50 a night at 35 cents per kilowatt hour.

A reverse cycle air conditioner moves heat rather than making it. Same job, far less electricity use.

So heat the room you are in, not the whole house. Set it sensibly and leave it there. Use the timer. Shut the door.

Why does my house cost so much to heat?

Because it leaks.

If your home lets heat out, your heater has to keep buying it back.

Plenty of older Australian homes were built with little or no insulation. Taking the right steps to insulate your household can cut heating costs by up to 45%.

Start cheap. Door snakes and weather seals on the gaps around doors and windows. Curtains closed before dark. Internal doors shut. Unsealed exhaust fans are the one most people miss.

Then the bigger items. Ceiling and wall insulation decide how hard your heater works. If you have work planned, check them then.

Cross-section of a house with arrows showing heat escaping through the ceiling, walls, windows, under doors, exhaust fans and unsealed gaps, while a heater runs inside.

Is hot water adding to my winter energy costs?

It is, and almost nobody looks at it.

Showers get longer when it is cold. The water entering your tank is colder too, so the system works harder to heat it. Same shower, more energy.

If you have solar, heat your water during solar hours on a timer or relay. That turns a grid cost into self consumption. No solar? Ask your retailer about a controlled load tariff.

If your hot water system is on its way out, look at a heat pump. Old electric tanks heat water with an element, the same way a bar heater works. A heat pump moves heat instead, which costs a lot less to run. 

Why is my solar not covering my winter bill?

Because production drops at the same time your usage climbs.

Winter days are shorter and the sun sits lower. Rooftop solar winter output is often less than half of what the same system produces in summer.

The panels produce least at exactly the hours you need most. Anything your panels are not covering gets bought from the grid instead, and the evening block is where most retailers charge their highest rate. Your heaviest hour of the day and your dearest rate of the day are the same hour.

So the bill rises even though nothing is broken. Winter can make a good solar system look like a bad one.

A battery closes that gap. A SigenStor stores your daytime solar, or cheap grid power from a free power window and releases it through the evening peak. It will not fix a leaky house or a 25 degree thermostat. It will offset your usage at the most expensive hours of the day.

Which is why a system should be sized to suit your winter load, not your summer production. Good design starts with what your home uses in July, not what the roof does in January. From there it is a question of what closes the gap. A battery. More panels to lift the winter yield. A Solar Sharer Offer, which gives you a cheap or free daytime block from your retailer to charge from. Often a mix of all three.

Chart across a full day showing winter solar production peaking around midday and falling to zero before evening, while household load peaks after dark. The shaded evening gap is the power a battery covers.

 

What else should I check before the next winter bill?

Five minutes walking around the house will find money.

  • Pool pump. Most run summer hours all year. Two extra hours a day is roughly 2 kWh, about 70 cents at 35 cents a kilowatt hour. Across a winter that adds up.
  • Clothes dryer. Spin on high first, then rack dry what you can. If it has to go on, run it in solar hours, not the evening peak.
  • Second fridges. A half-empty beer fridge draws power every hour of every day.
  • Standby loads. Computers left on, outdoor lighting with no sensor, smart home gear. Each is small. All of them running all day is not.
  • Your tariff. Check it once a year. Time of use peak rates are where winter bills do most of their damage. Read our most recent recommendations here.
Five icons for commonly missed winter loads: pool pump, clothes dryer, second fridge, standby appliances and your electricity tariff.

Read next: 5 Things To Do If You Are Considering Solar

Frequently Asked Questions

Why does my electricity bill double in winter?

Rarely one cause. Usage rises because heating runs for hours, hot water works harder and the dryer comes out more often. At the same time your solar produces less, and most of the extra load lands in the evening peak. More kilowatt hours, at a higher rate per kilowatt hour, on a bill covering the coldest months of the year.

Does solar power work less effectively in winter?

Panels handle the cold fine. Cold is not the problem. Shorter days and a lower sun angle are. Winter output is often around half of summer production, and your heaviest loads run before sunrise and after sunset when the panels are producing nothing at all.

What time of day is electricity most expensive in winter?

On most time of use tariffs, the evening peak. That is exactly when heating, cooking, lighting and the TV all come on together. Shifting what you can into the middle of the day is the simplest way to reduce your electricity bill in winter.

Will Data Centres Make Your Power Bill Go Up?

Australia’s data centres are about to use nearly seven times more electricity than they do today, going from around 5 TWh a year to 34 TWh by 2035–36. So will data centres push up your power bill? They might, and it’s being decided right now in rooms you’re not in. A roof full of panels and a battery change how much you need to buy at all.

Here’s what this article covers:

  • How much power data centres actually use
  • Whether that cost lands on households
  • Why solar alone cannot run a data centre
  • What any of it means for your roof

Why are data centres suddenly an energy story?

The number of proposed data centres has exploded. The AEMO counted 225 known data centre projects under development, up from 97 a year earlier.

In NSW, network connection enquiries reached up to 28 GW as of July, with about 13 GW in advanced discussions. The NSW Government notes that 13 GW alone is more than the state’s average daily demand.

Connection enquiries are lodged at maximum possible capacity, not expected use. AEMO found more than 40% of data centre projects proposed since 2025 have already dropped out or gone backwards. The pipeline is big and it is uncertain.

How much electricity does a data centre actually use?

AEMO’s 2026 Electricity Statement of Opportunities forecasts data centre consumption in the National Electricity Market rising from around 5 TWh in 2025–26 to 34 TWh in 2035–36. That takes them from roughly 3% of grid electricity to 13%.

That is the middle case. AEMO also modelled stronger growth reaching about 52 TWh over the same period.

The shape of the load matters as much as the size. AEMO says mature data centres run at about half their connection capacity and operate constantly, with only minor increases during working hours. Flat, day and night.

Bar chart of data centre electricity demand in Australia, rising from 5 TWh in 2025–26 to 34 TWh in 2035–36, with a dashed extension showing AEMO's higher growth case of 52 TWh.

Will data centres push my power bill up?

That depends on decisions being made right now, and those decisions aren’t finished.

Here’s the risk if it goes badly. New demand arrives, new generation fails to keep pace, and everyone competes for the same electricity. The Clean Energy Finance Corporation estimates wholesale prices would be 26% higher in NSW and 23% higher in Victoria by 2035 under that scenario. Wholesale prices reach retail bills eventually.

Network costs work the same way. The proposed 800 MW Bundey project in South Australia needs four substations and multiple new transmission lines on its own. If the rules stay silent on who funds that, it spreads across every customer.

So the real question isn’t whether data centres use a lot of power. It’s who gets made responsible for the supply and the infrastructure that use requires.

Diagram showing two outcomes for 34 TWh of new data centre demand: costs staying with the projects that cause them, or spreading to every electricity customer.

Governments are working on it. The AEMC recommended in July that new data centres prove they are backing new renewable generation, contract their own firming capacity, and register with AEMO so it can see what’s coming.

National Cabinet signed off in late August on standards requiring operators to invest in new renewable generation, with flexibility for state-owned electricity assets. Queensland and the Northern Territory took that as meaning they could decide how data centres in their states are powered. Federal Energy Minister Chris Bowen rejected that two days later, saying the standards will apply “with no exceptions and no carve-outs”. A state-owned company wanting to use coal or gas would have to prove to the Commonwealth it is cheaper than renewables. 

Bowen calls data centres “electricity whales” that “eat” energy, and puts the stakes in bill terms. Under an open slather approach in Queensland, he says, wholesale prices would be 13% higher.

Worth noting that AEMO published its forecast the day before the National Cabinet met. The 34 TWh assumes none of these obligations exist.

Legislation is expected in early 2027. Until then, none of this is settled.

Can solar power a data centre?

Partly, and only during daylight. A data centre draws close to the same load at 3am as at midday, so solar on its own leaves most of the day uncovered.

Chart comparing a data centre's flat 24-hour electricity load against a solar generation curve that peaks at midday, with the uncovered hours shaded.

Solar plus storage is the workable version. New solar and wind backed by batteries is what the Clean Energy Council has proposed data centres be required to contract, on terms of 15 to 20 years, by signing with a project directly, going through a retailer, or building the generation themselves. The length is the point. Renewable projects struggle to get finance without a long contract from a buyer who will still be there in fifteen years. Batteries then shift the midday surplus into the evening.

Same principle as a house with panels and a battery, several thousand times larger.

Side-by-side diagram of a house with rooftop solar and a battery next to a data centre with a solar farm and grid-scale battery, using the same generate-store-use loop.

What does this mean for your own house?

You don’t get a vote on any of this. Rules, connection queues, wholesale prices, none of it is yours to decide.

What you do decide is how much you buy. Right now your electricity comes from a retailer, and the retailer sets the rate. Solar and batteries give you energy independence. Your panels cover the house during the day, the battery covers the evening, and the power you use is power you generated. Whether wholesale prices go up or not, you’re protected.

Icons showing solar covering household electricity use during the day and a battery covering the evening, with grid supply set apart as the remaining exposure.

Australian households added 2.4 GW of battery storage, or 7.4 GWh, as at March 2026. Households are doing at small scale what data centres are now being asked to do at large scale.

Look, it doesn’t stack up for every home. Low daytime use, heavy shading or a short stay all change the answer. Click here to find out whether your home is ready for solar.

Frequently Asked Questions

Do data centres use a lot of electricity?

Yes. AEMO puts current use in the NEM at around 5 TWh a year, about 3% of grid electricity, growing to roughly 13% by 2035–36.

Will AI make my power bill go up?

Possibly, and it depends on rules still being finalised. If new generation and storage keep pace, the effect on household bills should be limited. If not, modelling suggests wholesale prices rise and that reaches your bill.

Can solar run a data centre at night?

No. Overnight supply has to come from storage, hydro, or other firm capacity the operator contracts.

Are data centres going to be forced to use renewable energy?

That’s the direction. National Cabinet has signed off on standards, and the federal government says data centres will need to back their load with 100% renewable energy plus firming. A state-owned energy company can apply to use something else, but has to prove it’s cheaper. Legislation is expected in early 2027.

How do I protect myself from rising electricity prices?

The only lever fully in your control is buying less from the grid.

Read next: Are AGL, Origin and Energy Australia prices going up this year?

Solar Batteries for Businesses NSW: PDRS Discounts Explained

From September 1st, a NSW business can cut the upfront cost of a battery by around 20 to 40%. For the first time Solar batteries for businesses in NSW are now properly covered by a state scheme.

How much comes off depends on the size of your battery, the installer you pick, and whether new solar goes in alongside it.

Here is what this article covers:

  • What changed for NSW businesses on 1 September
  • What the discount is actually worth
  • Whether your business qualifies
  • Why adding solar makes the discount bigger
  • What federal support you can combine it with
  • How the discount reaches you, and the one form that has to be signed first
  • Why you should not bank on 40%

What changed for NSW businesses on 1 September?

The Peak Demand Reduction Scheme, or PDRS, is a NSW government scheme. It pays for anything that cuts electricity demand during peak periods, like a hot summer afternoon. It has been running since September 2021.

Batteries under the scheme were mostly just for households until now.

From 1 September 2026, that opened up. Eligible businesses, including commercial and industrial operations, can get an upfront discount on a new battery through government-accredited suppliers.

Two size bands cover it. Batteries from 20 kWh to 200 kWh (the rules call this BESS4). Batteries from 200 kWh up to 30 MWh, or 30,000 kWh (BESS5).

Bigger battery, bigger discount. The amount scales with size.

A 20 to 50 kWh battery suits smaller operations like restaurants, takeaway shops and convenience stores. The upper end is built for factories and large industrial sites.

Homes and data centres are excluded. Apartment buildings got their own version of the discount on the same day, covered in What the New PDRS Rules Means for Solar Batteries.

Range chart comparing the two NSW business battery size bands, BESS4 at 20 to 200 kWh and BESS5 at 200 kWh to 30 MWh, with homes and data centres excluded.

How much can a NSW business save on a battery?

Around 20 to 30% off a battery installed on its own. Around 30 to 40% when it goes in with new or additional solar.

The NSW Government provided two examples with the announcement. A small business at grocery store scale, at around $37,000 off. A medium business at dairy farm scale, at around $355,000 off.

Neither example comes with a battery size attached. Treat them as a sense of scale, not a quote for your own site.

The discount amount provided above is indicative only, there are many factors that will impact the final cost such as: the installer you choose, where your site is and what it costs to get there, the battery model, how your building is designed and whether it needs additional electrical work first, the administrative cost of securing the discount, and the margin your installer charges. 

Comparison of NSW business battery discount rates, showing 20 to 30 per cent off a battery installed alone against 30 to 40 per cent when paired with new solar.

How does the small business battery incentive (BESS4) work?

BESS4 is for small and medium businesses. Shops, warehouses, offices, farms. It doesn’t apply to homes or data centres.

To qualify:

  • The site can’t have already used BESS4 or BESS5
  • The battery needs to be sized between 20 kWh and 200 kWh
  • The battery has to be on the Clean Energy Council’s list of approved batteries
  • An SAA accredited installer has to do the work
  • You need to obtain the required planning approval
  • It must be installed on or after 1 September 2026

In this band you also make a minimum payment towards the cost yourself. The discount won’t cover the whole job.

How does the commercial and industrial battery incentive (BESS5) work?

BESS5 is for bigger batteries, from 200 kWh up to 30 MWh. This one is built for factories, large warehouses and industrial sites, not homes.

To qualify:

  • The site can’t be a home or a data centre
  • The site can’t have already used BESS4 or BESS5
  • The battery needs to be tested and pass required fire safety standards
  • A licensed installer has to do the work. You can check a licence on the Service NSW website
  • You need to obtain the required planning approval
  • It must be installed on or after 1 September 2026

There’s no minimum payment in this band. Even if the battery is bigger, the incentive only counts up to the first 10 MWh.

Why does adding solar make the discount bigger?

The scheme pays more when a battery goes in with new solar. A battery charged off your own roof does more to cut peak demand than one charged off the grid.

The solar has to be new or additional. Panels already on your roof don’t count. If you have solar today and want the higher discount, you need to add more.

How much more depends on your battery. You need new solar equivalent to at least 25% of its capacity, installed within 90 days before or after. So a 100 kWh battery needs at least 25 kW of new solar.

That takes your discount from the 20 to 30% band up to the 30 to 40% band. New solar also lifts your self consumption through the day, which is when most businesses use the bulk of their power.

Diagram showing a 100 kWh battery needs at least 25 kW of new solar, installed within 90 days before or after the battery, to qualify for the higher discount.

Can it be combined with federal support for commercial solar?

Yes. NSW has confirmed the battery discount can be stacked with the Australian Government’s discounted rooftop solar scheme for commercial buildings, under the Small-scale Renewable Energy Scheme.

The Small-scale Renewable Energy Scheme will expand its limit from 100 kW to 1 MW systems, intended to start 1 October, cutting eligible commercial solar costs by around 20%. Read more about that here.

How do you get the discount on solar batteries for businesses?

There is no separate application to fill in.

Accredited Certificate Providers, businesses licensed by IPART to create certificates under the scheme, generate the Peak Reduction Certificates and pass the value back to you as a discount on your install. Your installer either is one, or partners with one.

The practical steps look like this.

Get multiple quotes. Ask each installer directly whether they offer this discount and whether it is included in the number they have given you.

Choose a battery. Not every model is eligible, and not every installer offers the same discount on the same model.

Sign the nomination form. Now, this is the part to get right. The form has to be signed and returned before installation begins. Work already completed will not be reimbursed. Signing late means losing the discount entirely.

Then the install goes ahead. Afterwards you sign a Post Implementation Declaration confirming the requirements were met, and your installer photographs the work as proof.

Commercial installs also take time. Site assessment, electrical upgrades, network and planning approvals, equipment lead times. If you want a battery running before next summer’s peak, the design work starts well before then.

If something goes wrong later, start with your installer. If that doesn’t resolve it, the Accredited Certificate Provider named on your nomination form is next. IPART administers the scheme and sits above both.

Four step process for getting the Solar Batteries for businesses discount, highlighting that the nomination form must be signed before installation begins.

Why shouldn’t you assume you’ll get 40% off?

Because these are certificates, not a fixed rebate.

Their value moves with the market. Every provider charges a different fee.

The 20 to 40% figure is a government estimate across a range of system sizes. It is not a promise attached to your quote. The government says so itself, and its own advice is to compare quotes from several installers who offer the discount. Prices for the same equipment vary more than most people expect: Why Do Solar Companies Charge Different Prices For The Same Products?

Now, the honest part. A battery does not suit every business. If your site runs mostly through daylight hours, sits on a flat tariff with no demand charge, and rarely loses power, the numbers may not stack up even with a discount on the table. Some sites are better off putting the money into solar alone.

Minister for Climate Change and Energy Penny Sharpe put the intent plainly: “NSW wants more batteries, and these changes will help more people cut their power bills, whether they are running a business or living in an apartment.”

Get the figures for your own site before you decide.

Read next: What the New PDRS Rules Means for Solar Batteries

Frequently Asked Questions

What is the Peak Demand Reduction Scheme and how does it apply to businesses?

The PDRS is a NSW government scheme running since September 2021. It rewards anything that cuts electricity demand during peak periods. From 1 September 2026, eligible NSW businesses can use it to get an upfront discount on a battery between 20 kWh and 30 MWh.

How much of a discount can NSW businesses get on commercial battery storage?

Around 20 to 30% off a battery on its own, or around 30 to 40% when new solar goes in with it. In dollar terms, the government has cited about $37,000 for a small business such as a grocery store, and about $355,000 for a medium business such as a dairy farm. The government calls these figures indicative.

Do I need to install solar panels to be eligible for the PDRS battery discount?

No. A battery on its own qualifies. New solar simply increases the discount, provided it is equivalent to at least 25% of the battery’s capacity and installed within 90 days before or after it.

How do I get the battery discount for my business in NSW in 2026?

Through your installer. There is no separate application. Get several quotes, confirm the discount is included, then sign the nomination form before any installation work starts. Signing after work has begun means the discount is lost.

South Australia Solar Just Powered the Grid in Winter

South Australia just proved that solar is capable of supporting the electricity grid. In a recent event observed by the AEMO, rooftop solar met 99.9% of grid demand setting a new record for winter.

Here is what happened:

  • What South Australia’s solar record actually was
  • Why the same afternoon set a national record
  • What the batteries were doing
  • What it means for solar owners in NSW, the ACT and Queensland

What happened at 1:30pm?

South Australia’s demand for grid-scale generation fell to 2 MW. Homes and businesses were running almost entirely on power made on their own roofs.

At the same time the National Electricity Market set a new winter minimum operational demand record of 11,992 MW, beating the 12,144 MW set in August 2024. Operational demand is the power the grid has to supply. Rooftop solar pushes it down, because those homes are not asking for much.

Across the NEM, rooftop solar was supplying close to 54% of underlying demand. Renewables of all kinds accounted for 71% of generation.

Bar showing rooftop solar covering 99.9% of South Australian demand, with grid-scale generation at 2 MW

Why is a winter record a bigger deal?

Winter is solar’s hard season. The sun sits lower and the days are shorter. It shows that rooftop solar can carry a state through its weakest months.

Five tiles showing South Australia solar, renewables, battery charging and hydro pumping shares at the grid's winter low

What were the batteries doing?

Working hard. Wholesale prices went negative across every NEM region, from -$7.40/MWh in Queensland to -$8.60/MWh in Tasmania. Negative prices mean more power is available than the market needs.

Batteries treated that as an opportunity. Charging soaked up around 10.5% of everything being generated, with hydro pumping taking another 2%. That midday surplus was not wasted. It was held and released into the evening peak.

Diagram of a home battery charging from midday solar and powering the house during the evening peak

What does this mean for NSW, the ACT and Queensland?

The same grid, the same direction. Queensland saw negative prices that afternoon too.

Rooftop solar is now the biggest single generator in the country by the middle of the day, and AEMO is planning the system around it. More storage. More flexibility.

For a homeowner the read is simple. Midday power is abundant. The households getting the most from it are the ones storing it rather than exporting it, which is worth weighing up when deciding what battery you install.

Read next: the five best ways to use three free hours of daytime energy

Frequently asked questions

Can rooftop solar really power a whole state on its own?

For short periods, yes. South Australia came within 0.1% of it at 1:30pm. Holding that around the clock is a different problem, which is where storage comes in.

Why do electricity prices go negative?

When more power is being generated than the market needs, generators pay to keep supplying rather than shut down and restart. It happens most often on sunny, mild days with low demand.

Could NSW or Queensland reach the same point?

Both are heading the same way. Queensland recorded negative prices in the same window. Neither has South Australia’s rooftop solar density yet, so the milestone will come later there.