Actually not really, there is only one electric provider here, they just give you the option of choosing to prefer power generated with renewables or not.
I don't think the actual electrons come from there its just a budgeting trick I expect.
Of course it's a trick. If you're anywhere other than an island that has no transmission lines running to it and you pay for electrical service, you're connected to the same grid everybody else is. Your power comes from the same place everybody else's does. You don't actually have a choice of where your "electrons" come from (they come from the wires, by the way, generating stations just make them move around).
Your "preference" is nothing more than providing an extra subsidy to generating stations that make the electrons wiggle via renewable energy sources.
I don't think the actual electrons come from there its just a budgeting trick I expect.