Western Australia Battery Guide | Live Energy Prices & Rebates 2025

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Have questions about battery systems or want personalised advice for your home?

Our Carbon Commitment

Carbon neutral since forever. Yes, including our AI.

See the Maths →

5.4

Avg Sun Hours/Day

Zone 2

Solar Zone

SWIS (WA1)

Electricity Grid

Distributors

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Western Australia Battery Rebates 2025

Federal Rebate (All Australians)

Western Australia residents qualify for the Cheaper Home Batteries Program:

✓~$372 per kWh of usable battery capacity (9.3 STCs × $40)
✓~$5,000 for typical 13.5kWh battery, max $18,600 (50kWh cap)
✓Battery must be VPP-capable
✓Commissioned on or after 1 July 2025

Read Full Federal Rebate Guide

Western Australia State Rebate(WA Residential Battery Scheme)

From 1 July 2025, WA offers state battery rebates that stack with the federal rebate - up to $5,000-$7,500 total for a 10kWh battery.

✓Synergy customers: $130/kWh (up to $1,300 for 10kWh battery)
✓Horizon Power customers: $380/kWh (up to $3,800 for 10kWh battery)
✓Stacks with federal rebate for total of $5,000-$7,500 (10kWh battery)
✓WA also offers zero-interest loans to help with purchase
✓WA operates on SWIS grid (separate from NEM)

Visit Western Australia Energy Website

Western Australia Energy Market Facts

✓WA operates separately from the NEM on the SWIS grid
✓Highest average sun hours of any capital city (Perth)
✓Solar soaking issues - midday solar exports can approach zero value
✓Synergy dominates the residential market

Frequently Asked Questions: Western Australia Batteries

Does the federal battery rebate apply in WA?

Yes, Western Australian residents qualify for the federal Cheaper Home Batteries rebate. However, VPP requirements may differ in the SWIS grid compared to NEM states. Check that your battery and installer meet WA-specific requirements.

What is solar soaking and why does it matter for WA batteries?

Solar soaking occurs when midday solar generation exceeds grid demand, driving wholesale prices negative. WA has significant solar soaking issues. A battery lets you store this excess solar instead of exporting for near-zero value.

How do WA feed-in tariffs compare to eastern states?

WA feed-in tariffs vary by retailer but are typically 2-7c/kWh. With retail prices of 28-35c/kWh and excellent solar resources, the spread makes batteries highly attractive in Perth and surrounding areas.