Energy storage has emerged as the next big opportunity for the solar industry. With significant improvements in PV technology and new balance-of-system innovations, the solar industry has dramatically reduced both commercial and residential solar system costs in the last year — leading to a substantial increase in the amount of solar connected to the grid in the U.S. The U.S. solar industry achieved impressive growth in 2012, and there is no slowdown in sight. In 2013, EuPD Research projects that the U.S. will add approximately 3.9 GW of new solar capacity and continue robust installation rates for both residential and utility-scale PV systems.