I buy solar panels and batteries when I can. It's actually one of my top investments. I am fortunate enough to have the land to set up a significant sized solar array, so I am looking into a modified setup where I am feeding some into the grid with a grid tie inverter that would offset some of my machine usage, then have another complete off grid setup that will have a battery array that will store what it doesn't use. I am actually planning small modular units that I can move around to power greenhouses, etc. But again, I am fortunate enough to have the place to do it. If anything people need to collect as many battery packs as they can. I buy that instead of silver or gold.
If you can produce your own power, you should look into GPUs and renting them for AI usage. Being that they aren't profitable for crypto mining anymore after Ethereum went to PoS, it could be a good way for hardware junkies to get their fix and get paid. Offsetting the power costs with your own solar rigs is a great way to make it more profitable.