If anything, the fact that its federal land probably makes it more feasible to run those sorts of clear-cut transmission lines through areas. You don't need to establish easements or eminent domain private property to build such things.

There are some challenges with transmission, but I think the bigger ones isn't necessarily building the infrastructure -- it's making the transmission lines themselves more efficient and reducing losses. We can't build all our solar in the southwest of the US and then distribute that all over the country; Our current transmission technology would produce too much loss over such distances.