State rebate
Eligible usable capacity from 5 kWh, paid at $130/kWh for Synergy or $380/kWh for Horizon Power, capped at 10 kWh. VPP and other conditions apply.
Official eligibility rules ↗Current settings · 31 August 2026See the support.
Battery support calculator
See the support.
Then see the price.
Estimate the WA rebate and federal battery certificates separately, then see how the government no-interest loan could sit against the remaining balance.
Live estimate
Build the numbers.
Price before support$15,000
Estimated WA rebate− $1,300$130/kWh, capped at 10 kWh
Federal value used in estimate− $068 potential STCs, assuming federal eligibility · your entered net value
Indicative price after assumptions$13,700
Illustrative WA loan pathway · eligibility not assessed$10,000 at 0% over 10 yearsAbout $83 per month. Actual repayment schedule follows an approved Plenti contract.
Email this estimate to PSA Illustrative general information only—not a quote, financial advice, eligibility decision or credit approval. The federal result assumes the 6.8 factor for batteries certified 1 May–31 December 2026. Actual STC value can differ with certification date, market price and agent fees. Confirm current written terms before proceeding.
- WA rebateSynergy or Horizon Power rate, based on usable capacity
- Federal STCsCurrent 2026 tapered certificate formula applied
- Payment viewPossible 0% WA loan illustrated without promising approval
What the estimate includes
Three figures.
Three different rules.
A clean quote should keep each support stream separate. That makes the real equipment and installation price easier to compare.
Federal STCs
The current calculator applies the 6.8 factor and the capacity taper for batteries certified from 1 May to 31 December 2026. Only the first 50 usable kWh count.
Regulator guidance ↗WA 0% loan
Eligible households may apply for $2,001–$10,000 over 3–10 years. Income, identity, credit and responsible-lending checks apply.
Compare finance pathways ↗A checked number beats a headline
Want PSA to check
your actual quote?
Email the battery size, inverter model, suburb and written before-support price. PSA can check the installation assumptions and current Synergy scheme pathway.
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