Since early 2013, Walmart has tested 13 battery storage projects with solar installations across California to provide additional savings to Walmart by using stored electricity to lower peak demand charges. The next ten solar energy storage projects will each use a larger 200 kilowatt (400 kilowatt hour) battery, expanding battery storage capabilities as well as further reducing energy expense. SolarCity has created 5,000 permanent American jobs since it initiated its first project with Walmart in 2010. Walmart is the top commercial solar energy user in the United States according to the Solar Energy Industries Association ( SEIA ), and the largest on-site renewable energy user in America according to EPA's Green Power Partnership. About SolarCity SolarCity ® (Nasdaq:SCTY) provides clean energy.