Power of good: how solar sponge tariffs can be a win for your pocket and the planet | Peter Mares

These cheap daytime tariffs match the time when solar panels pump out the most energy and households use the least electricityGet our morning and afternoon news emails, free app or daily news podcastWhen our ageing immersion hot water system needed replacing, I wanted to install an energy saving heat pump.They cost more but consume far less power, and I calculated we would get the money back by trimming $270 off our annual bills. Plus we'd be doing our bit to cut greenhouse gases and reduce demand on a stressed electricity grid.Sign up for Guardian Australia's free morning and afternoon email newsletters for your daily news roundup Continue reading...