NSW commercial battery rebate: BESS4 & BESS5 explained (from 1 September 2026)

If you run a business on our side of the border — a farm, dairy, packing shed, motel, workshop or commercial premises anywhere from Moama to Deniliquin, Barham to Finley — 1 September 2026 is worth knowing about. That's when two new activities under the NSW Peak Demand Reduction Scheme (PDRS), known as BESS4 and BESS5, officially commence, extending the scheme to commercial-scale batteries for the first time.

How it actually works

PDRS doesn't hand out a fixed government cheque. Instead, an eligible battery install generates Peak Reduction Certificates (PRCs) — tradeable certificates with a market value, the same mechanism behind the federal STC scheme that already applies to your solar. We assign the certificates at point of sale and pass the value straight through as a discount on your invoice. Real dollars off the system cost, not a loan you repay later.

BESS4 — small and medium business batteries

• Usable battery capacity greater than 20kWh and up to 200kWh
• CEC listed battery equipment, installed by an SAA-accredited installer to AS/NZS 5139
• A minimum co-payment of $5,000 applies per installation
• Planning and network approvals still need to be in place

This is the bracket most farms, dairies and small commercial sites in our service area will fall into — a system sized well beyond a typical household battery but short of a full industrial installation.

BESS5 — larger commercial, industrial & community batteries

• Usable capacity above 200kWh and up to 30MWh
• Certificates are capped at 10MWh worth of value regardless of how large the system is

Solar isn't required — but it helps

You don't need to install solar alongside the battery to qualify for BESS4 or BESS5. But installing the battery within 90 days of new eligible solar capacity can increase the certificate value, which is exactly why it's worth quoting the battery and the solar together rather than as two separate decisions down the track.

Stacking with the federal rebate

The federal STC scheme and the NSW PDRS are two completely separate programs covering different equipment — STCs apply to your solar panels, PRCs apply to the battery. Run a combined solar-plus-battery commercial project and both schemes can apply on the one job, each reducing the upfront cost of the part of the system it covers.

A couple of honest caveats

Certificate prices move with the market, so the exact dollar saving depends on the PRC price at the time your system is registered — we'll give you a real, current figure at quote stage rather than a number that might be stale by the time you read this. And because this is a new scheme commencing 1 September 2026, expect some of the fine print (approval turnaround times especially) to settle in over the following months.

Get ahead of it

We're a CEC-accredited installer already set up for STC assignment — getting ready for PRC lodgement under BESS4/BESS5 is a natural extension of paperwork we already handle every week. If your business is sitting on a big power bill and a roof or shed that could carry a serious battery, now's the time to start the conversation so you're first in line once the scheme opens. Call Brooke on 0408 258 298 or use our [Quote Builder](/quote).