Until production begins.
Get the evil company to invest lots of money and then get an injunction.
I doubt they are buying into the “green” technology argument. They hate success unless they profit from it!
Of course the rich libs are ready to profit from it once the government mandates it. Algore is set to become a billionaire off of Cap and Trade, and Nancy Pelosi is heavily invested in T. Boone Pickins windmill schemes. And the Sierra Club didn't object to building CSU Merced over their preceious "vernal pools" once it was announced that a big new "enviromental studies" departments would be included.