Graphs (IMAGE) Stanford Woods Institute for the Environment Caption Graphs showing timeline of energy sources for meeting all U.S. energy needs with wind, water and solar (WWS) power sources. The graph on left shows mix for 80% WWS by 2030 and 100% by 2035. The graph on right shows mix for is 80% by 2030 and 100% by 2050. The 2050 end points in both cases are cases examined in the study. Credit Jacobson, et al. / Renewable Energy Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.