Incentives
NSW battery rebates: how the two discounts stack
There are two separate battery incentives in NSW. They are worked out in completely different ways, and you can claim both on the same install.
- Two incentives stack on a NSW home battery, as at August 2026. One is federal, one is state.
- Federal: the Cheaper Home Batteries discount pays 6.8 STCs per usable kWh (May–December 2026 rate), at full rate on the first 14 kWh. Illustratively around $3,000 on a 13.5 kWh battery.
- NSW: the PDRS adds Peak Reduction Certificates. Their value floats with the certificate market, so it is never honestly quotable as a fixed dollar figure.
Almost every article about “the NSW battery rebate” mixes up two schemes that have nothing to do with each other.
Know the split and you can check a quote, instead of having to trust it.
1Is it one rebate or two?
Two. One is federal, one is NSW. They use different certificates and different rules, and you can get both on the same battery.
| Federal | NSW state | |
|---|---|---|
| Program | Cheaper Home Batteries Program | Peak Demand Reduction Scheme (PDRS) |
| Delivered under | Small-scale Renewable Energy Scheme (SRES) | PDRS, administered by IPART |
| Certificate | STC — Small-scale Technology Certificate | PRC — Peak Reduction Certificate |
| Based on | Usable kWh of storage | Usable kWh able to discharge in the peak window |
| Paid as | Point-of-sale discount on your invoice | Discount or payment via an accredited provider |
| Ends | 31 December 2030 with SRES | Ongoing scheme, rules reviewed periodically |
You are eligible for both on the same battery, provided the install meets each scheme’s own conditions. Neither one cancels the other.
2How is the federal discount worked out?
Usable kWh × the STC factor × the certificate price. It comes off your invoice. You never see a cheque.
The Cheaper Home Batteries Program started on 1 July 2025. It extends the existing solar certificate machinery to batteries.
- Your battery creates STCs based on its usable capacity.
- Your installer creates and sells those certificates.
- The proceeds come off your invoice as a discount.
The three inputs
- Usable capacity in kWh. Not nameplate. A battery advertised as 10 kWh with a 90% depth of discharge contributes 9 kWh.
- The STC factor. Certificates created per usable kWh. It steps down over time as the scheme winds toward its 2030 close.
- The STC price. What the certificate is worth when sold. The Clean Energy Regulator’s Clearing House benchmark is $40 excluding GST. Certificates typically trade below that, and there are creation and administration costs. Most reputable quotes model somewhere in the high $30s.
STCs = usable kWh × STC factor (banded), rounded down.
Discount = STCs × the STC price your retailer achieves, less their handling costs.
More detail: eligibility conditions worth checking
- Usable capacity between 5 kWh and 100 kWh installed, but certificates are only created on the first 50 kWh.
- The battery must be connected to new or existing rooftop solar.
- Grid-connected systems must be VPP-capable — capable of being controlled by a virtual power plant. You do not have to join one, but the hardware has to be able to.
- Both the battery and the installer must appear on the relevant approved lists.
- One claim per property under the program.
3What changed on 1 May 2026?
Two things. The full rate now applies only to the first 14 kWh, and the rate steps down every six months.
Uptake ran far ahead of forecast: more than a quarter of a million batteries in the first year. The program budget was expanded substantially, and the government changed how the discount is calculated.
1. The rate now tapers by system size
- Before: every usable kWh earned the same factor.
- Now: the full factor applies only to the first 14 kWh of usable capacity. Capacity above that earns a reduced rate.
The stated intent is to hold the discount near 30% for a typical household system, while removing the incentive to oversize.
2. The rate now steps down every six months
The battery factor used to step once a year on 1 January. It now declines twice a year, to track falling hardware prices.
A 27 kWh battery no longer earns three times the discount of a 9 kWh battery.
If a quote for a large system still shows a flat per-kWh rebate across the whole capacity, it is either using pre-May figures or it is wrong. Ask for the STC count to be shown as two lines: the first 14 kWh, and the balance.
4How does the NSW incentive work?
NSW pays for how useful your battery is to the grid at peak times. The value floats with the certificate market, so no honest quote fixes the dollars months ahead.
NSW used to run its own upfront battery hardware rebate. That was paused in July 2025, specifically so it would not double up with the new federal program.
What replaced it is structurally different. NSW now pays for grid usefulness, not for ownership.
The Peak Demand Reduction Scheme creates Peak Reduction Certificates. A battery earns PRCs because it can reduce demand on the network during the defined peak window.
Because the certificate price floats, no honest quote can promise you an exact dollar figure months in advance.
What a good quote can do is show the PRC count and the assumed rate separately. Then you can see what happens if the rate moves.
5BESS1 to BESS5: which one applies to you?
BESS1 for a new home battery. BESS2 for an existing one. BESS3 for apartments. BESS4 and BESS5 for business.
The PDRS battery incentive is delivered through numbered activities. Getting the right one matters, because the eligibility rules and the deemed lifetime differ.
| Activity | Covers | Available from |
|---|---|---|
| BESS1 | Installing a new battery at a home or small business | 1 July 2026 |
| BESS2 | Connecting an existing battery to a VPP or aggregator | 1 July 2026 |
| BESS3 | Shared battery for apartment buildings of four or more dwellings | 1 September 2026 |
| BESS4 / BESS5 | Business and commercial sites (excluding homes and data centres) | 1 September 2026 |
Three rule changes from 1 July 2026
- Solar is no longer a prerequisite for the state incentive. A battery without panels can now qualify. (The federal discount still requires a solar connection — these rules are not aligned.)
- Eligible battery size widened to 50 kWh, up from 28 kWh. The incentive is still calculated on the first 28 kWh only.
- New-battery activities do not require a VPP contract. The hardware must be internet-connectable and controllable by a demand-response aggregator, but you are not locked into a plan. Only BESS2, the retrofit activity, requires a 12-month VPP or aggregator contract.
PDRS certificates can only be created by an Accredited Certificate Provider (ACP) accredited by IPART.
If your installer is not an ACP and is not working through one, the state incentive cannot be claimed on your job at all. Ask the question before you sign.
6Can I claim both?
Yes. They pay for different things, and there is no clawback between them for new installations. Watch three details.
The federal program subsidises the asset. The state scheme buys demand reduction. That is why they add together.
- Hardware has to satisfy both lists. Federal requires an approved, VPP-capable battery. PDRS requires aggregator-capable hardware. Most current-generation batteries satisfy both, but not all do — particularly older stock being cleared at a discount.
- Timing rules differ. Federal eligibility runs from 1 July 2025. The relevant PDRS activity has its own start date, and an install completed before that date cannot be back-claimed under it.
- The paperwork is separate. Two claims, two evidence trails, potentially two parties. Confirm in writing who lodges each.
7What does it look like on a 13.5 kWh battery?
Illustratively, about $3,034 from the federal discount, plus a state amount set by the certificate market.
These figures use illustrative certificate prices to show the method. Your actual numbers depend on the certificate market on the day your system is registered, your network loss factor and your retailer’s costs.
We deliberately have not published a single headline number for the state portion.
Anyone who quotes you a fixed PDRS figure without naming the certificate price they assumed is guessing. If the market moves, the shortfall lands on you at invoice time.
8What are the five expensive mistakes?
Comparing nameplate capacity, trusting the advertised rebate, oversizing for the rebate, not checking the installer can claim PDRS, and ignoring the connection.
1. Comparing quotes on nameplate capacity
Two 10 kWh batteries can have materially different usable capacity. Both incentives are calculated on usable kWh, so the one with the higher depth of discharge earns more certificates and stores more energy.
Always compare usable figures.
2. Assuming the advertised rebate is what you get
The certificate has to be created, validated and sold. Creation costs, assignment fees and market spread all sit between the headline value and the number on your invoice.
A quote showing the full clearing-house price as your discount is showing you a best case, not a price.
3. Oversizing to chase a rebate that no longer scales
Since 1 May 2026 the marginal rebate above 14 kWh is lower. If a salesperson is pushing you from 13 kWh to 27 kWh on rebate grounds alone, the arithmetic no longer supports that argument.
Size the battery to your evening load, not to the incentive.
4. Not checking whether the installer can claim PDRS at all
This is the single most common gap. A perfectly competent installer who is not an ACP simply cannot deliver the state incentive.
5. Ignoring the export and connection side
A battery that cannot be commissioned because the network connection application was never approved earns nothing at all.
The DNSP connection rules should be confirmed before you pay a deposit.
9Does timing matter?
Modestly, and less than urgency-led advertising suggests. Do not rush a badly sized system to beat a step date.
- The cost of waiting is real but bounded. The federal factor now steps down twice a year.
- Falling prices partly offset it. Battery hardware prices have fallen steadily.
- The bigger risk is rushing. Installing a system you have not properly sized to beat a step date is almost always the more expensive error.
If you were going to install this year anyway, install before a step date rather than after. If you are not sure the system is right, take the time.
A well-sized battery outperforms a badly-sized one with a slightly larger rebate for its entire twelve-to-fifteen year life.
Common questions
Can I claim both the federal battery discount and the NSW PDRS incentive?
Yes. They are separate schemes administered by different governments and paid through different certificate types. A new battery installation that meets both sets of eligibility rules can claim both, and neither reduces the other.
Do I need solar panels to get a battery rebate in NSW?
It depends which incentive. The federal Cheaper Home Batteries Program requires the battery to be connected to new or existing rooftop solar.
The NSW PDRS incentive dropped the solar prerequisite from 1 July 2026, so a battery without panels can qualify for the state incentive but not the federal one.
Do I have to join a virtual power plant?
Not for a new battery. The federal program requires the battery to be VPP-capable, not enrolled. The PDRS new-battery activities require aggregator-capable hardware but no contract. Only BESS2, which onboards an existing battery, requires a 12-month VPP or aggregator agreement.
How much is the federal battery rebate worth per kWh?
For the May to December 2026 period the factor is 6.8 STCs per usable kWh, applied in full to the first 14 kWh of usable capacity and at a reduced rate above that.
Multiply by the net certificate value your retailer achieves — typically in the high $30s against a $40 clearing-house benchmark — to get the dollar discount.
Is there a maximum battery size?
Federally, batteries between 5 kWh and 100 kWh usable can be installed, but certificates are only created on the first 50 kWh.
Under the NSW PDRS, batteries up to 50 kWh are eligible from 1 July 2026, with the incentive calculated on the first 28 kWh.
When does the federal battery rebate end?
The Small-scale Renewable Energy Scheme, which delivers the discount, is legislated to close on 31 December 2030.
The battery factor declines every six months between now and then, so the discount shrinks progressively rather than stopping suddenly.
Can businesses and apartment buildings claim a battery incentive in NSW?
Yes.
Under the PDRS, apartment buildings of four or more dwellings can access a shared-battery activity (BESS3) and business and commercial sites can access BESS4 and BESS5, all available from 1 September 2026. Data centres are excluded.
Sources and further reading
- Australian Government, Department of Climate Change, Energy, the Environment and Water — Cheaper Home Batteries Program
- Clean Energy Regulator — Small-scale Renewable Energy Scheme, STC creation and Clearing House benchmark price
- IPART — NSW Peak Demand Reduction Scheme rules and Accredited Certificate Provider register
- NSW Government — Peak Demand Reduction Scheme battery activity determinations (BESS1–BESS5)
Revision 3.2 · 3 October 2026. This revision rewrote the guide so it is easier to skim. No figures or rules changed.
Figures current at 9 August 2026. Set Energy technical team. NSW Electrical Contractor Licence 467699C.