For a 100MW scale facility the contract work is never over. Once you are done with one bit of work something else is in need of refreshing or changing. Components are breaking daily at that scale, and switch gear, UPS, generators, breakers, etc. all have useful lifetimes and a replacement cycle.

It’s effectively a full time job for an electrician crew or three.

Of course once the facility goes away entirely the job does too. But so goes a factory or anything else.

Construction is one of the jobs that's booming nationwide.