With the introduction of more EV's, overall power consumption may plummet - so there isn't really all that much need for energy storage.
Electric scooter uses 250 watts to maybe 500 watts to move a human 15.5mph to 25mph. That is 1/3rd to 2/3rds a HP. If people start using that instead of a 2,000 pound combustion vehicle every time they want to go to the store for a soda - it will literally mean 200x less energy needed overall.
So no need to build extra natgas to electric plants. In fact, we may have to start thinking about reducing them. I'd be more concerned that the USA decides that they no longer need the existing pipelines. Its a little like a floppy disc in the age of USB thumbdrives, crazy efficiency will definitely eventually make old ideas obsolete.
Kroger/Dominos 100 pound groceries robot delivery for 10 cents? Its coming fast, arguably the most energy wasteful part of a vehicle delivery is keeping a 200 pound human in a temperature controlled air bubble.
Drastic drastic deflation in combustion vehicles is a possibility.