Also I don't think you realize what "excess of energy" means - it specifically means there is no one to sell the energy to,
I think most bitcoiners don't realize that when heat waves or subzero temps arrive, their is usually NO EXCESS ENERGY!
https://news.trust.org/item/20210616152609-rkr1cSearing heat across the U.S. Southwest and soaring electricity demand for air conditioners this week are prompting grid operators in Texas and California to warn consumers about energy conservation to avoid outages.
Which is why Proof of Waste is so dangerous , wasting energy when a power grid is maxed out ,
at best creates rolling blackouts,
at worst crashes a power grid and destroys the transformers,
Once that happens and a major grid is down for ~2 years to repair all those blown transformers,
expect bitcoin PoW mining to be permabanned around the world.
Not a question of if, it has become a question of when especially for Texas.