One year into the Australian Cheaper Home Batteries program, Australia’s household battery storage has quadrupled to around 16 GWh. I’ve updated the interactive map of postcode-level battery capacity and accompanying analysis here.
April 2026 was a record month at 2.8 GWh as households rushed to beat the 1 May rebate step-down, which cut the discount for capacity above 14 kWh. That’s about 75% of the capacity Australia’s entire household battery fleet held at the start of 2025, installed in one month.
The Australian Government’s Cheaper Home Batteries program has nearly tripled Australia’s household battery capacity in just eight months. I pulled publicly available data from the Clean Energy Regulator and Energy Consumers Australia to dig into what’s actually happening — where the batteries are being installed, who’s buying them, why, and what it all means for electricity bills and the grid. I also built an interactive postcode-level map so you can explore the data yourself.
Some of the findings are surprising. Average postcode income has no correlation with battery uptake. People are buying batteries roughly double the size they were before the rebate. And while nearly 60% of survey respondents say they’re interested in joining a virtual power plant, fewer than 10% of battery owners actually have — a gap that’s already reshaping AEMO’s long-term plans for how much grid-scale storage Australia will need.
Read the full analysis on Energy x AI, my newsletter covering AI infrastructure, Australian energy regulation, and the intersection of the two.
Read the full post on Substack →
