The federal Cheaper Home Batteries Program discounts your battery through small-scale technology certificates (STCs), based on usable capacity, for the first 50 kWh. From 1 May 2026 the STC factor dropped to 6.8 (and steps down again every six months), and the subsidy became a sliding scale by size — so the bigger the battery, the lower the average subsidy per kWh:
Your battery must be on the Clean Energy Council approved list and VPP-capable (you don't have to join a VPP). The discount is applied at the point of sale by an accredited installer. More on the 2026 rebates →
These are indicative estimates for general information only — not a quote, and not financial advice. The actual discount depends on the STC spot price on the day, your installer, your exact battery and current program rules, which change over time. State figures are summaries; confirm the current amount with the official program. Always get a written quote.