Mangum Economic's New Report Richmond-based Mangum Economics has just released an in-depth analysis of the the fiscal impact of utility-scale solar facilities over projects’ 35-year lifetime. The detailed report examines factors driving solar development and how Virginia localities are impacted. The surge in solar interest is notably reflected in the rise in megawatt hours generated. According to the U.S. Energy Information Agency, solar facilities across the U.S. increased from 0.9 million megawatt hours in 2008 to 63.8 million megawatt hours