alt Hacker NewsNot sure how much this happens in practice anymore - any smart utility is going to use your solar / house battery to cover their spikes and reduce overall costs so they don’t have to keep an old dormant coal plant on the books for the Super Bowl. At least, that’s what I’d expect from my utility.
I think it's mostly for cases where people get 95% of the energy from solar but stay connected to the grid. The fixed costs of a house's connection to the grid are roughly constant, but historically utilities amortized it in their energy prices. We saw something similar in my area during the California droughts when people were "too good" at conserving water, but I guess a lot of the infra costs don't scale linearly with usage