WA Battery Policy & Incentives
Understanding federal and state policy, rebates, and incentives for home batteries in Perth, Western Australia
The federal SRES provides upfront rebates through STCs. In 2025: 9.3 STCs per kWh at ~$39 each. Reduces annually until 2030 program end.
Learn more →WA offers rebates of $130/kWh (Synergy, max $1,300) or $380/kWh (Horizon Power, max $3,800). Requires VPP participation and min 5kWh capacity.
Learn more →Stacking Rebates
The good news: you can stack federal and state rebates together. For a typical 10-13 kWh battery system, this could mean $4,500-$6,300 in combined savings for Synergy customers, or $7,000-$8,300 for Horizon Power customers.
Example: 10 kWh System (Synergy Customer)
Total savings: $4,927 (41%). Horizon Power customers receive up to $3,800 WA rebate for even greater savings.
2026 Installation Note
Most installers are currently booked into 2026. Federal STCs reduce from 9.3 to 8.4 certificates per kWh on January 1st, 2026, reducing the federal rebate by approximately 10%. A 10kWh system would receive ~$3,276 instead of $3,627 in STCs if installed in 2026.
Policy Context
Battery policy in Western Australia is evolving rapidly. Beyond direct rebates, understanding the broader policy landscape—including grid connection rules, export limits, and virtual power plant (VPP) programs—is crucial for maximizing your battery investment.
The state government's approach to battery storage is shaped by grid stability needs, renewable energy targets, and consumer protection frameworks. These policies directly impact what systems you can install, how they connect to the grid, and what financial benefits you can access.