Why would you want to use electric power anyway? Its the type of energy thats the hardest to aquire (we use chemical energy in lots of powerplants to create electrical energy with bad efficency). For a enviromental friendly rocket you could still rely on chemical propelants, e.g. hydrogen created by electrolysis of renewable energy. Thats way easier due to the high energy density of chemical propulsion...
Elon Musk (SpaceX) said every form of transportation will eventually go electric…with the exception of rockets.
RE: Can We Ever Have An All-Electric Powered Rocket?