State-based targets for green electricity generation have been so successful in developing renewable energy projects that any current proposals for a federal clean energy standard could require little or no additional capacity, according to a leading academic.

Ryan Wiser, a scientist specializing in electricity markets and policy at Lawrence Berkeley National Laboratory, said recent data showed that any proposed federal RPS would require fewer additions than were seen in 2008-10 to meet state-based Renewable Portfolio Standards targets. Keep reading →