Ryan Wiser and Galen Barbose (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Ryan Wiser (left) and Galen Barbose have conducted a "lessons learned" type study of how states have been utilizing renewables portfolio standards to support the development and use of renewable electrical power. Credit photo by Roy Kaltschmidt, Berkeley Lab Public Affairs Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.