WA Solar & Battery Rebates 2026: The Complete Guide

Western Australian households can access three layers of solar and battery incentives in 2026. Stacked together on a typical solar-plus-battery installation, they're worth $7,000–$12,000.

1. Federal STC rebate (solar panels)

Small-scale Technology Certificates (STCs) reduce the upfront cost of solar systems under 100kW. Perth sits in STC Zone 3, and in 2026 the rebate is worth roughly $1,800–$2,400 on a 6.6kW system. The discount is applied at the point of sale — you never need to claim it yourself.

2. Federal Cheaper Home Batteries discount

Running since July 2025, this program discounts installed battery costs by around 30% for systems between 5kWh and 50kWh. A Tesla Powerwall 3 that would otherwise cost about $17,000 installed comes down to roughly $12,000.

3. WA Residential Battery Scheme

Synergy customers can access additional state support including interest-free loans of up to $10,000 for battery purchases, repayable over up to 10 years. Eligibility depends on household income and connection type.

How they stack

All Perth Solar Warehouse pricing is displayed after incentives — the price you see is the price you pay.