Exelon has one of the nation’s cleanest and lowest-cost power generation portfolios, with 55 percent nuclear, 28 percent natural gas and 9 percent hydro, wind, solar and other clean generation. Exelon has made numerous investments to prepare for the nation’s transition to cleaner air as the Clean Air Act is enforced. The company is executing a plan to invest billions of dollars in cost-efficient, clean energy projects between 2010 and 2015, including a comprehensive nuclear uprate program to further increase its clean generation portfolio. In addition, the company manages load response programs for commercial and industrial customers across the Unites States and Canada.