tl;dr: Australia's home battery subsidy program, launched in July 2025, has driven the installation of over 500,000 batteries—giving the country more home batteries than the US despite having 1/12th the population. By discharging stored solar power during evening peak demand, the batteries have reduced reliance on additional power plants, contributing to a 47% drop in wholesale electricity prices over the past year, according to Energy Minister Chris Bowen.