If you're installing solar, a battery, or both in NSW right now, there are up to three separate government incentives that can apply to the one project — and they stack. None of them cancel the others out, and none of them require you to choose between schemes. The catch is that each one calculates differently, applies to a different part of your system, and (in the case of the NSW scheme) has eligibility rules that are changing partway through 2026. This guide walks through exactly how it fits together.
Quick answer (TL;DR)
- Up to three incentives stack on one NSW project: solar STCs, the federal battery rebate, and the NSW PDRS incentive.
- STCs discount the solar (~$2,000–$2,500 on a 6.6kW system); the federal rebate covers ~30% of battery cost; NSW PDRS adds up to $1,100–$1,500.
- All three are applied automatically at point of sale by an accredited installer — no separate claims.
- The federal + NSW battery combination is the "double dip" — both apply in full.
- Rates step down (federal ~every 6 months, STCs each 1 January), so installing sooner secures more.
| Scheme | Applies to | Value | Step-down |
|---|---|---|---|
| STCs | Solar panel system | ~$2,000–$2,500 on a typical 6.6kW Sydney system | Each 1 January |
| Federal Cheaper Home Batteries Program | The battery | ~30% of installed battery cost, tiered by usable capacity, via STCs | Roughly every 6 months to 31 Dec 2030 |
| NSW PDRS battery incentive | The battery | Up to $1,100–$1,500, via BESS activities | Per scheme methodology |
All three are applied automatically by your installer at point of sale — none of them require you to submit a separate claim or wait for reimbursement, provided your installer is properly accredited for each scheme (we are, for all three).
If you're installing solar, your installer calculates the eligible STCs based on your system's capacity and Sydney's solar zone rating, then deducts that value directly from your invoice. This applies regardless of whether you're also installing a battery.
For the battery component, your installer calculates the usable capacity in kWh and applies the tiered federal discount — approximately $272/kWh for the first 14kWh, $163/kWh for the next 14-28kWh band, and $41/kWh for the 28-50kWh band (rates current as of 1 May 2026, stepping down roughly every six months). This is deducted from the battery invoice the same way STCs are deducted from the solar invoice.
Separately again, the NSW PDRS battery incentive — up to $1,100–$1,500 depending on capacity — is applied as a further upfront deduction on the battery cost. This is the "double dip": it stacks on top of the federal battery discount rather than replacing or reducing it.
If you're open to connecting your battery to a Virtual Power Plant, this can add further ongoing value beyond the three upfront incentives, though it's a separate decision with its own terms depending on the VPP provider. We'll discuss compatible options during your assessment if you're interested.
The result is a single project invoice showing your solar system cost less STCs, plus your battery cost less both the federal and NSW discounts. You pay the net figure — there's no separate rebate paperwork to manage afterward for any of the three schemes.
To make this concrete, consider a household installing a new 6.6kW solar system alongside a 13.5kWh DC-coupled battery (such as a Sigenergy SigenStor, Goodwe, Fox ESS, or Sungrow SBR unit of equivalent size):
Added together, these three schemes represent a substantial reduction on the combined system cost before you've even factored in the ongoing bill savings from generating and storing your own power. Because exact figures depend on your specific system size and the scheme rates current at time of install, we calculate the precise combined figure as part of every formal quote rather than quoting a generic average.
Before assuming you qualify for the full stack, check the following:
No — they're independent schemes and both apply in full, which is why the combination is informally called the "double dip."
For the federal rebate, no — new batteries and retrofits both qualify regardless of existing solar. For NSW PDRS specifically, existing solar has generally been required, but that requirement is removed from 1 July 2026 for battery-only installs.
No. The federal battery rate steps down roughly every six months through to the scheme's end in December 2030, and the STC solar discount steps down each 1 January. Installing sooner secures a larger combined discount than installing the identical system later.
Because these schemes interact, change on different timelines, and depend on your exact system specification, a generic online calculator will rarely give you an accurate combined figure. We recalculate the full stack for every quote using the rates current on the day, so what you see in writing is what actually lands on your invoice.
(Figures current as of August 2026 — these incentives step down on a set schedule; confirm current values against the Clean Energy Regulator and the NSW Government energy website before quoting.)
Get your exact combined rebate figure — book a free in-home assessment through the Quote Wizard, or call a Sydney expert on 0421 458 217 / sales@blueenergysolar.com.au.
