Joule Wind Map (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Older (pre-2008 commercial online date) plants are shown in pink, and newer plants in orange. The size of each dot is proportional to the nameplate capacity of the plant. The background map shows the annual average wind speed (m/s) at 80 m above surface level. 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.