How Big a Battery Would It Take to Power All of the U.S.?

Energy storage is the key to deploying wind and solar energy on a vast scale, but exactly how much of it will be required remains to be seen

By Davide Castelvecchi  | February 27, 2012 | 25

http://www.scientificamerican.com/article.cfm?id=castelvecchi-how-big-battery-would-it-take-power-usa&WT.mc_id=SA_WR_20120301