As far as I know residential PG&E customers can't buy energy in spot market prices, or else there could be some innovative arbitrage opportunities, like only running bitcoin miners when power is cheap.
1. https://www.energy.gov/eere/articles/confronting-duck-curve-...
Bitcoin on the other hand is just a waste of energy
Some people think clothes driers or Christmas lights are a waste of energy, but it's not for them to decide how other people spend the energy they've paid for. Some people think those things are worth the energy cost and so they pay for it. That's their choice to make.
Bitcoin has one of the highest % of renewables of any industry i.e. solar, wind, hydro etc.
As an absolute value the amount of energy it consumes is less than 0.1% of global energy consumption.
Those two things taken together mean that Bitcoin contributes what amounts to a rounding error in total global CO2 emissions.
And that's not even mentioning its GHG emissions reducing effects on the capture of methane, which could turn it CO2eq negative emissions.
On top of that it has an important role to play in balancing grids by consuming excess energy that the market doesn't want or need, or can't be stored.
And the utility of Bitcoin? Well, some people see value in a form of money that can't be arbitrarily debased, is open to all on a global and neutral network that can't be changed or controlled by any central or corrupt authority, and that is censorship resistant.
You might not see value in that, but many people do.
Maybe you see more value in Christmas lights which consumes more energy than Bitcoin.
https://twitter.com/gladstein/status/1512493813218123786?s=2...
https://bitcoinmagazine.com/culture/check-your-financial-pri...