These 5 charts show how far rooftop solar and home batteries can take us – and why we still need the grid

zstockphotos/Getty Australian homes and cities are increasingly producing and storing their own power. After two decades of growth, solar panels are now on the rooftops of one in three Australian homes. And home batteries have surged after the Australian government began offering subsidies last year. Around 450,000 batteries had been installed by the end of 2025 – about 4% of Australia’s 10.9 million households. What would happen if these trends continue? It’s tempting to picture a future…