If you’re weighing up rooftop solar, the lifespan question usually comes up early. You’ll hear numbers like 25 or 30 years and it’s easy to assume that once the warranty ends, the panels are on their last legs. Add Australia’s heat into the mix and some people expect them to fry even sooner.
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.