Archive: https://archive.today/apgbZ From the post: >>I use Home Assistant for automation, so the solution described uses Home Assistant's sensor configuration and database layout, however the overall idea should be more widely applicable. I've been trying to minimise what we pay for electricity at home, by optimising the times at which e.g. house battery charges or water heats up. To do that it's useful to be able to predict future load. Why does this help ? Imagine a situation where you want to decide if to charge battery from grid, and by how much. If current battery charge will fully cover your predicted load until e.g. sun comes up and gives you solar you're golden, but if not it might make sense to charge from the grid.