Utilities are well-regulated. There may need to be some adjustments to policy but it's solvable so long as we vote for the right people (a big if, for sure). Increasing adoption of heat pumps and EVs is also going to require a ton more electricity generation which is another policy issue to solve, but again totally solvable. Most power consumption is during the day and the coldest time is night, so I'd think this is not as bad an issue as it seems. We already support a huge amount of air conditioning during summers with only occasional problems.