Electranet, a South Australian transmission company, has stated that the Australian state’s grid will reach 100% renewable energy within four years – with the caveat that this is “net 100%,” which will include occasional imports from neighboring states, which still have significant fossil fuel resources – but that such imports will at least be exceeded in scale by renewable power exports overall. The South Australian power mix is currently 71% renewable across 2022 and 2023 per Electranet and this pioneering status gives us a preview of what will be necessary in grid around the world to turn renewable energy input into a reliable output that always meets demand. The answer is straightforwardly batteries, both domestic and utility-scale, to soak up…