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NSW Commercial Solar and Battery Rebates 2026: Who's Eligible, Who Can Offer Them, and How GES Energy Helps

In 2026, a NSW business can combine up to three government incentives on one solar and battery project: the federal solar discount, the federal battery discount and the new NSW business battery discount that started on 1 September 2026. Together they can cover a large share of the project cost, but only when the job is done by the right kind of installer.
Commercial solar and battery incentives at a glance
A NSW business can stack federal and NSW incentives on the same project. Each is claimed through your installer as a discount on the quote.
| Incentive | Who provides it | What it covers | How it's paid |
|---|---|---|---|
| Solar STCs (Small-scale Renewable Energy Scheme) | Australian Government | Solar up to 1 MW (mid-scale systems of 100 kW–1 MW qualify from today, 1 October 2026) | Upfront discount on the quote |
| Cheaper Home Batteries Program | Australian Government | Business batteries of 5–100 kWh paired with solar | Upfront discount on the quote |
| NSW business battery discount (BESS4) | NSW Government | Small and medium business batteries, over 20 kWh up to 200 kWh | Upfront discount, through an Accredited Certificate Provider |
| NSW commercial and industrial battery discount (BESS5) | NSW Government | Batteries over 200 kWh, up to 30 MWh | Discount or project funding, through an Accredited Certificate Provider |
| NSW VPP incentive | NSW Government | Small business batteries of 2–50 kWh that join a virtual power plant |
Biggest news for 2026: from today, 1 October 2026, mid-scale commercial solar (100 kW to 1 MW) can earn STCs for the first time. It gets a fixed 5-year calculation period, so larger rooftops like warehouses, factories, shopping centres and farms can now get an upfront discount.
Commercial solar rebates: the federal STC discount
Commercial solar in NSW earns small-scale technology certificates (STCs), and your installer takes their value off your quote. The number of certificates depends on three things:
• the system size in kW
• your postcode zone: most of NSW, including Sydney, Newcastle and Wollongong, is zone 3, rated at 1.382 MWh per kW each year
• the deeming period, which depends on the installation year
Up to 100 kW. The deeming period is 5 years for systems installed in 2026 and drops to 4 years in 2027. It keeps shrinking by one year each year until the scheme ends in 2030.
100 kW to 1 MW (new, starting 1 October 2026). Mid-scale systems get a fixed 5-year deeming period, so their discount doesn't shrink each year. Applications open in mid to late November 2026 for systems installed from 1 October. A mid-scale system can claim either STCs or Guarantee of Origin (REGO) certificates for that period, not both.
| System size (NSW zone 3) | Installed in 2026 | Installed in 2027 |
|---|---|---|
| 30 kW | 207 STCs ≈ $7,866 | 165 STCs ≈ $6,270 |
| 50 kW | 345 STCs ≈ $13,110 | 276 STCs ≈ $10,488 |
| 99 kW | 684 STCs ≈ $25,992 | 547 STCs ≈ $20,786 |
| 200 kW (mid-scale, from 1 Oct 2026) | 1,382 STCs ≈ $52,516 | 1,382 STCs ≈ $52,516 |
| 500 kW (mid-scale) | 3,455 STCs ≈ $131,290 | 3,455 STCs ≈ $131,290 |
| 1 MW (mid-scale) | 6,910 STCs ≈ $262,580 | 6,910 STCs ≈ $262,580 |
Estimates use kW × 1.382 × deeming years, rounded down, at $38 per STC. Your exact amount depends on your postcode, the installation date and the STC price on the day (Clean Energy Regulator). Systems over 1 MW are treated as large-scale power stations and earn certificates under the large-scale schemes instead.
Commercial battery rebates: the federal discount
Despite its name, the Cheaper Home Batteries Program is open to businesses and community organisations too. It takes roughly 30% off a battery of 5–100 kWh (nominal capacity) installed with solar.
• The first 14 kWh of usable capacity earns the full rate, the next 14 kWh earns 60%, and 28–50 kWh earns 15%. Anything above 50 kWh earns nothing extra.
• The rate drops every 1 January and 1 July until 2030, and the date of your electrical compliance certificate sets which rate applies.
• The battery must be paired with new or existing solar. The program's rules, published in May 2026, say that solar must be under 100 kW. Ask us how this applies if you're also installing mid-scale solar.
| Usable battery size | Installed by 31 Dec 2026 | Installed Jan–Jun 2027 |
|---|---|---|
| 20 kWh | $4,522 | $3,800 |
| 30 kWh | $5,852 | $4,902 |
| 40 kWh | $6,232 | $5,206 |
| 50–100 kWh | $6,612 | $5,548 |
Estimates assume $38 per STC (DCCEEW).
The NSW business battery discount (from 1 September 2026)
The NSW Peak Demand Reduction Scheme now pays businesses to install batteries, and this discount can be combined with the federal one. NSW estimates it at about 30–40% off the battery when you install new solar at the same time, or 20–30% for a battery on its own.
| Small and medium business (BESS4) | Commercial and industrial (BESS5)me | |
|---|---|---|
| Usable battery size | Over 20 kWh, up to 200 kWh | Over 200 kWh, up to 30 MWh (paid on the first 10 MWh) |
| Minimum customer payment | $5,000 | None |
| Equipment | Battery on the Clean Energy Council approved list, installed to AS/NZS 5139 by a Solar Accreditation Australia installer | Tested to UL9540A, behind the meter, internet-connected and controllable by a demand response aggregator, licensed installer |
| Stacks with the federal battery discount | Yes, for batteries under 100 kWh | No (too large) |
| Stacks with the NSW VPP incentive | Yes, for batteries up to 50 kWh | No |
To get the higher discount, install new solar within 90 days before or after the battery, sized at least 25% of the battery's capacity (for example 50 kW of new solar with a 200 kWh battery).
Small businesses with a 2–50 kWh battery can also join a virtual power plant for the NSW VPP incentive, commonly quoted at up to about $1,100 depending on the provider (NSW business battery incentive).
Worked example: a Sydney business adding solar and a battery
In this example, a Sydney business stacks about $35,000–$40,000 of incentives on a 50 kW solar system and a 60 kWh battery installed in November 2026. The business is a small manufacturer in zone 3, and the battery costs $50,000 installed (an example price only).
| Incentive | Estimate | How it's worked out |
|---|---|---|
| Federal solar STCs | $13,110 | 50 kW × 1.382 × 5 years = 345 STCs × $38 |
| Federal battery discount | $6,612 | First 50 kWh usable: 174 STCs × $38 |
| NSW business battery discount (higher tier) | $15,000–$20,000 | 30–40% of $50,000, because the new solar (50 kW) is more than 25% of the battery's 60 kWh |
| NSW VPP incentive | Not eligible | The battery is over 50 kWh |
| Total | ≈ $34,700–$39,700 |
The exact NSW figure comes from the certificate provider's calculation for your site and network area, so treat it as a range until you have a quote.
Who is eligible
Most NSW businesses that own or lease a grid-connected site qualify for at least one of these incentives. Use this checklist:
• ☐ Site type: a business, farm, school, club, community or commercial building. Residential buildings and data centres can't use the NSW business battery discount.
• ☐ Grid-connected: off-grid sites can't get the NSW discounts.
• ☐ Solar size: up to 1 MW for federal STCs (systems over 100 kW must be installed on or after 1 October 2026).
• ☐ Battery size: 5–100 kWh for the federal discount, over 20 kWh for the NSW business discount, 2–50 kWh for the VPP incentive.
• ☐ Solar with the battery: required for the federal battery discount. It's optional for the NSW discount, which pays more if new solar goes in within 90 days.
• ☐ First claim: the site hasn't used the NSW business battery discount before, and the battery hasn't had a federal battery discount.
• ☐ Timing: NSW business batteries must be commissioned on or after 1 September 2026, and the nomination form must be signed before work starts.
• ☐ Approvals: network connection approval from Ausgrid, Endeavour Energy or Essential Energy, plus any planning approval. Landlord consent if you lease.
• ☐ Approved equipment: Clean Energy Council listed panels, inverters and batteries.
Which retailers and installers can offer these rebates?
In practice, these incentives reach you through your installer or retailer as a discount on the quote. Each scheme has its own rules about who can offer it, and not every solar company qualifies for all of them.
| Incentive | Who can offer it | How to check |
|---|---|---|
| Federal solar and battery STCs | A retailer with an installer accredited by Solar Accreditation Australia (SAA), using Clean Energy Council approved products. The retailer, designer and installer each sign written statements to the Clean Energy Regulator. | Search the installer on the SAA register and the products on the CEC approved lists |
| NSW business battery discount (BESS4/BESS5) | Only installers partnered with an IPART Accredited Certificate Provider (ACP). The ACP creates the Peak Reduction Certificates and gives you a fact sheet with the quote. | Ask which ACP the installer works with and check it on IPART's list |
| NSW VPP incentive | VPP providers (energy retailers and aggregators) participating in the scheme | Ask the VPP provider whether it offers the NSW incentive |
| Electrical work in NSW | A holder of a NSW electrical contractor licence | Check on the NSW Government's Contractor and Tradespeople Register |
Warning signs: a quote that doesn't show each rebate as its own line, a request to sign the NSW nomination form after work has started, or a company that can't name its Accredited Certificate Provider.
Can GES Energy offer these rebates? Yes.
GES Energy can deliver all of the incentives above for NSW businesses. We handle the paperwork and claim the certificates, and every discount appears as its own line on your quote.
• Accredited installers: our solar and battery installers are accredited by Solar Accreditation Australia, and we use Clean Energy Council approved panels, inverters and batteries, so your project qualifies for federal STCs.
• NSW licensed: we hold a NSW electrical contractor licence for work in NSW.
• NSW business battery discount: we're partnered with an IPART Accredited Certificate Provider, so we can include the BESS4/BESS5 discount in your quote.
• STC processing: we create and process the solar and battery STCs and apply their value upfront.
• Grid connection: we prepare the network connection application with Ausgrid, Endeavour Energy or Essential Energy.
How it works with GES
- Site assessment: we review your electricity bills, roof space and switchboard.
- Design and rebate check: we size the solar and battery to get the most from every incentive, for example sizing new solar to at least 25% of battery capacity to unlock the higher NSW rate.
- Quote: every federal and NSW discount is shown line by line, with certificate numbers.
- Paperwork: you sign the STC assignment and the NSW nomination form before work starts, and we lodge the network application.
- Installation and commissioning by our accredited, NSW-licensed team.
- Claims: we create the certificates, and you've already received the discount on your invoice.
Frequently asked questions
Can a business get both the federal and NSW battery rebates? Yes. For batteries under 100 kWh the federal discount and the NSW business battery discount can be combined, and batteries up to 50 kWh can add the VPP incentive too.
Do I need solar to get a commercial battery rebate in NSW? For the federal battery discount, yes. For the NSW business discount, no, but you get a bigger discount if you add new solar within 90 days.
My system is 150 kW. Can I get STCs? Yes, if it's installed on or after 1 October 2026. Solar from 100 kW to 1 MW now qualifies for STCs with a fixed 5-year deeming period. Applications open in mid to late November 2026.
We lease our premises. Can we still apply? Yes, with the landlord's written consent for the installation. The incentives go to the business that owns the system.
Is there a cap on how many businesses can claim? No. The NSW scheme is certificate-based with no funding cap, and it's legislated to 2050. The federal solar and battery discounts step down over time until 2030.
How long does it take? Most of the time goes on network approval. Installation of a typical commercial system takes days, not weeks.
Talk to GES Energy
GES Energy designs and installs commercial solar and battery systems for NSW businesses and applies every federal and NSW incentive you're eligible for. Call 1300 811 031 or email info@gesenergy.com.au for a free site assessment and a line-by-line rebate quote.
All figures are estimates based on the rules in effect on 1 October 2026, using $38 per STC and NSW zone 3. Final amounts depend on your postcode, installation date, certificate prices and eligibility checks by the scheme administrators.
Sources
• Mid-scale solar – Clean Energy Regulator
• Small-scale technology certificates – Clean Energy Regulator
• Calculate STC entitlements – Clean Energy Regulator
• Cheaper Home Batteries Program – DCCEEW
• Cheaper Home Batteries eligibility – DCCEEW
• Batteries for businesses incentive – NSW Climate and Energy Action
• Virtual power plant incentive – NSW Climate and Energy Action
• PDRS Rule and changes – IPART
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