If we want to bring most types of manufacturing back then we need cheap, reliable base load power. It's often not economically feasible to shut a plant down and wait out a spike in electricity spot prices due to batch processing limits, thermal cycling, labor scheduling, and capital depreciation concerns. It's not a simple thing like turning off your home water heater for a few hours.
Long term probably the only realistic solution will be changes in government policy to make fission power the least expensive energy we have. Grid scale battery storage can also help to an extent but it's unclear whether that will ever be cost effective or even possible given resource constraints.
Okay and what are we doing for that ? We are turning off dams in the PNW. China has successfully reduced energy costs, partially by using solar. I say just do what they're doing. We are at the point of playing catch up.
