Amazon invests a lot in its own wind and solar parks. Because of that, energy prices on the open market shouldn't affect them too much.
Read more about that at https://sustainability.aboutamazon.com/environment/renewable...
Read more about that at https://sustainability.aboutamazon.com/environment/renewable...
Or... look at it another way, you bought some nice energy futures contracts when they were cheap. You might earn more selling those energy futures contracts now they're very valuable than you make putting that energy into servers and selling the compute.