I can say, with certainty, that in the Northeast the grid is not prepared for that amount of load increase. Many lines are old and many areas are wooded and remote. There are nowhere near enough linemen, designers, and engineers to accomplish this work.
That’s where genuine “conspiracy theorists” start in your scenario.
I’m not convinced, but their arguments are something along the lines that there is no intention to building an electrical grid capable of supplying current demand.
They are “transitioning” to or preparing for a so iety with a whole lot less people, i.e. for whatever or however reasons, there will be a lot of dead people very, very soon. Therefore there will be no need for the level of infrastructure we have now. Again these are not my opinions, but the paranoid can’t help but notice these things. And there is a certain elegance to the scheme.