The large, industrial users are an example of thermal storage, but at a different scale than home heating. Tesco's fridges are apparently worth about 25-50MW,

The large, industrial users are an example of thermal storage, but at a different scale than home heating. Tesco's fridges are apparently worth about 25-50MW, so like a small grid-scale battery: https://www.theguardian.com/business/2019/jun/23/cool-running-supermarket-fridges-could-help-power-uk https://www.theguardian.com/business/2019/jun/23/cool-runnin... An aluminium smelter is gigawatts, the one in Scotland is 1.2GW, which is a medium-size power plant by itself. They're easy projects, compared to installing thousands or hundreds of thousands of batteries or new heating systems in homes.