This exact problem is systematised in software and other infrastructure regions. Even hospitals for example have backup generators.
The problem is that power companies making resilient grids eats into their profits and so they won’t do it unless they’re compelled to
Vesectomy is the way if you know for sure that you never want children - they aren’t reversible like birth control are and shouldn’t really be considered reversible at all because there’s a very real risk of them not being so