Federal Battery Rebate Tripled to $7.2 Billion: What It Means for Perth Homeowners

What Changed

On December 13, 2025, the Australian Government announced a tripling of funding for the Cheaper Home Batteries Program. The program, which originally launched with $2.3 billion in funding, has been expanded to $7.2 billion over four years. The target is ambitious: 2 million Australian homes fitted with battery storage by 2030, delivering approximately 40 GWh of distributed energy capacity.

The expansion comes in response to the record battery uptake seen in 2025, with over 193,000 valid batteries installed nationally — more than double the previous year. The Clean Energy Regulator now projects up to 520,000 residential installations in 2026 alone.

How the Rebate Works

The federal rebate reduces the upfront cost of eligible battery systems through the Small-scale Technology Certificate (STC) scheme. The rebate amount varies by system size, location, and installation date:

• A typical 10 kWh system currently receives approximately 68 STCs (worth ~$2,720 at current spot prices) under the 2026 H2 factor — reduced from the 84 STCs (~$3,360) available before 1 May 2026
• Above 14 kWh the capacity taper applies: 14-28 kWh band gets 60% of STCs, 28-50 kWh gets 15%
• The rebate is applied at point of sale — your installer deducts it from your quote, so you never need to claim it yourself

Stacking with WA State Rebates

Perth homeowners can combine the federal battery rebate with the WA Residential Battery Scheme for substantial savings. For Synergy customers installing an SSL-approved battery:

• Federal STC rebate: ~$2,720 for a 10 kWh system under the current 2026 H2 factor
• WA state rebate: $130/kWh up to $1,300 (10kWh cap)
• Combined savings: $4,500+ for Synergy customers

Additionally, eligible households can access interest-free loans up to $10,000 through Plenti to cover the remaining installation cost.

Why Right-Sizing Matters Under the Current Framework

The capacity taper in force since 1 May 2026 means batteries above 14 kWh receive proportionally less per kWh in federal rebate. For most Perth households 10-14 kWh hits the sweet spot: full-rate band, strong self-consumption, and meaningful VPP earnings on top.

Market Impact

The expansion is already driving industry growth. Australia's rooftop solar fleet reached 28.3 GW across approximately 4.3 million installations by the end of 2025, with 42% of Australian homes now powered by solar — the highest rate in the world. The battery program aims to pair storage with this vast solar capacity to reduce grid strain and lower household energy costs.

Battery pricing has also become more favourable. Bloomberg NEF reports the global benchmark for a four-hour battery project fell 27% year-on-year to a record low, with further reductions forecast. Perth installed battery costs now average $850–$1,050 per kWh before rebates.