March 10, 2015 Source: U.S. Energy Information Administration, Electric Power Monthly Note: Other renewables include hydroelectric, biomass/wood, and geothermal. In 2015, electric generating companies expect to add more than 20 gigawatts (GW) of utility-scale generating capacity to the power grid. The additions are dominated by wind (9.8 GW), natural gas (6.3 GW), and solar (2.2 […]