It's true that oil & gas are powerful political interests, but there are others as well. In this case, I don't think it's so much out of a desire to be "green"

It's true that oil & gas are powerful political interests, but there are others as well. In this case, I don't think it's so much out of a desire to be "green" as out of a desire to develop what's seen as a big potential energy resource. West Texas has a lot of pretty steady wind, so it's seen as a valuable economic resource to develop. Wind energy also has its own state-level political clout and lobbying, because large landowners in West Texas see it as a way of improving monetization of their large holdings of ranchland, and large West Texas landowners are a well-organized interest group. Heck, even small farmers have similar hopes of increasing their income by renting out turbine rights, which adds to the political pressure to enable wind development.