In the first quarter of 2025, rooftop solar capacity for homes and businesses in Australia surpassed 26 GW, with over 4.1 million photovoltaic systems now in operation, according to the Clean Energy Regulator (CER). Alongside these latest figures, we examine solar adoption rates 25 years after the Renewable Energy (Electricity) Act 2000 established the market for renewable energy certificates (RECs). We also take a closer look at the levelised cost of energy and the current payback period for residential solar systems.
