2 gigawatts of output would require about 8,000 acres of solar panels. The energy density just isn't there compared to gas.
E.g. the Al Dhafra Solar PV project in the UAE has a capacity of 2 GW and covers over 20 square kilometers, using ~4 million panels.
I mean, sure, Musk clearly doesn't like CA these days, but the point is there's a lot of cheap land out there.
Much of Tennessee is deeply forested. 8000 acres is a square 3.5 miles or 5.7 km on a side.
Knocking down that much forest hits different than planting poles in dry grassland or desert that prevails in much of the western US.