Air Quality (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption This graphic shows annual GHG and air quality benefits of the 20 GW of solar power installed by the end of 2014 by region or state. Credit Berkeley Lab 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.