Here in California, PG&E has a "base service fee" of $24/month. That you owe even if they sell you no (as in ZERO) electricity:
https://www.pge.com/en/account/billing-and-assistance/base-s...
The grid costs a significant amount of money to build and maintain, and maintaining the available capacity to serve you electricity even if you only use it a couple months of the year (or even a couple days of the year) still costs money.
If you don't want to be connected to it at all - then I mostly feel you shouldn't be mandated to be.