The 2014 Renewable Energy Data Book shows that U.S. renewable electricity grew to 15.5 percent of total installed capacity and 13.5 percent of total electricity generation. Published annually by the National Renewable Energy Laboratory (NREL) on behalf of the Energy Department's Office of Energy Efficiency and Renewable Energy, the Data Book illustrates United States and global energy statistics, including renewable electricity generation, renewable energy development, clean energy investments, and technology-specific data and trends.
The 2014 Renewable Energy Data Book compiles recently available statistics for the 2014 calendar year. Key insights include:
- In 2014, U.S. renewable electricity grew to 15.5% of total installed capacity and 13.5% of total electricity generation. Installed renewable electricity capacity exceeded 179 gigawatts (GW) in 2014, generating 554 terawatt-hours (TWh).
- In 2014, U.S. hydropower produced nearly half of total renewable electricity generation, wind produced 33%, biomass produced 12%, solar photovoltaics (PV) and concentrating solar power (CSP) produced 6%, and geothermal produced 3%.
- Installed global renewable electricity capacity continued to increase and represents 28.5% of total electricity capacity globally in 2014.
- At the end of 2014 Geothermal energy in the U.S. provided 3,789 MW of capacity and supplied 16,628 GWh.
- From 2004 to 2014 geothermal energy in the U.S. grew by a compound annual growth rate of 3.1% compared to 3.7% globally.