As we race to decarbonise by electrifying everything, solar panels – now cheaper per square metre than marine-grade plywood – will do much of the heavy lifting. But if we don’t rethink how our rooftop panels plug into the grid, the transition will be unfair and costly – for both people who own solar panels (and electric cars and smart appliances) and people who don’t.
Australia has the world’s highest solar installation rate per person. When solar panels generate more energy than a household is using, the excess electricity can be exported to the grid. Rooftop solar regularly provides more than a quarter of daytime electricity across the National Electricity Market. At times it exceeds 90% in South Australia.
