They don’t need the grid if they’re deploying their own solar. I find it exceedingly unlikely that there is nowhere in the U.S., much less the world, that they couldn’t use some of Tesla’s battery experience to deploy a boatload of solar panels and batteries for less than the launch costs, and then have something which can be serviced or upgraded in place.
I agree those don't seem immediately to be huge wins to me; not dealing with local politics might be a big one, though. Depending on location. There's a lot of red tape in the world.