The solution we’re using instead of course, instead of all that environment crap you suggested, is running huge crypto farms only during the hours when the energy is in surplus.
To be fair; this is a valid use case.
If you are a solar power producer; rather than offering your energy at -ve rates; run a crypto farm when the output is too high. This is far better than running the same farm on coal.
But it would be better going into something useful.
I want to pre-empt the argument from the Bitcoin people that while this is a logically sound argument for how Bitcoin mining could potentially help the environment by making renewables more economically feasible, using this argument to describe Bitcoin mining electricity usage is completely invalid—Bitcoin mining as it exists today does not merely use excess renewable energy; it consumes energy even in times of demand when it could be given to residential, commercial, or industrial customers. Without the excess demand from today’s Bitcoin mines, the capacity that is freed up can be used to close fossil fuel power plants.