IMHO the more reasonable approach, if you don't have enough to run the whole show, is to convert the circuits for your most critical loads to a RE-powered, grid-backed system. Refrigerator, emergency lights, fan power for fuel-based heating equipment, etc. Then you're OK in an outage of either the grid or your RE equipment - and you can afford to pay the premium for running just these loads through your "UPS" when you have an RE shortfall.
Hydro has the advantage that it's much more reliable, level, and predicatble than wind and solar. So it's easier to plan with and doesn't require a lot of energy storage.[ Parent ]
