Lighting the Way: What We Can Learn from America’s Top 12 Solar States, a July 26 report by Environment America, found that solar power capacity in the United States has tripled since 2010 and has grown ten times since 2007. It recommended more national solar-friendly policies which could increase solar energy production by 10 percent by 2030. The report also listed the top 12 states based on per capita solar capacity: AZ, NV, HI, NJ, NM, CA, DE, CO, VT, MA, NC, and MD.