For most of the modern era, coal sat quietly at the centre of the electricity system. It didn’t need much defending because it didn’t have any serious competition. Power stations ran, lights stayed on, and the system barely changed.
One of the quieter problems with Australia’s rapid renewable energy rollout is that, at times, we’re generating too much clean power. Wind and solar farms increasingly produce electricity when the grid can’t absorb it, and without enough storage, that surplus energy is simply thrown away. It’s an uncomfortable irony for a country investing billions in clean generation.
Australia’s residential energy market is in the middle of a structural shift. Rooftop solar is no longer the endgame; storage is now the missing piece. As the National Electricity Market wrestles with negative daytime pricing, evening demand spikes and a steeper duck curve, batteries have moved from “nice to have” to strategic household infrastructure.
Australia is well past the novelty phase of rooftop solar. With more than 3.3 million homes already generating their own power, batteries are now being sold as the fix for everything solar no longer does well — falling feed-in tariffs, rising network charges, and retailers doing whatever they can to keep revenue flowing.