Re: Desert Solar Power ?
Rooftop solar panels, while they can power a house, would not be at all powerful enough to take the load of a cloud provider's datacenter. They could put a bunch of solar panels on the ground elsewhere, but they probably won't. However, as such a sunny state, there are quite a few people with solar panels connected to the grid supplying solar power at certain points. Nevada is one of the best states in America for renewable energy.
For a source, see this chart with data from 2017 (it seems from a quick search that solar use has been climbing since then). While the sorting (I did the without hydro option) makes it look like Nevada is actually not as great, its proportion of solar/wind to total is about the same as most of the ones that look to be ranked higher. Depending on which column you use, it looks bad not because Nevada isn't working but because they don't have much hydroelectric power and they're not as big as some other sunny states like California.
I don't mean to assign any credit for this to Google, but if they're going to put a datacenter somewhere, this isn't the worst state from the perspective of environmental impact of attaching to the grid.