Power supply from TVA-operated generation facilities (year ending September 30, 2014)
| Type of power supply | Summer net capability (GW) | Total power supplied (millions of kWh) | Percent of total power supplied |
|---|---|---|---|
| Coal fired (10 plants/41 active units; 18 inactive units) | 11.933 (36%) | 62,525 | 44%* |
| Nuclear (3 sites; 6 units in operation; 1 unit under construction) | 6.724 (18%) | 53,778 | 38% |
| Hydroelectric (29 conventional dams/109 generating units; 4 pumped storage units) | 5.418 (15%) | 13,228 | 9% |
| Natural gas and/or oil fired (98 combustion turbine power blocks; 87 simple cycle units; 11 combined cycle; 1 diesel generator/5 units) | 9.242 (25%) | 12,615 | 9% |
| Renewable resources (non-hydro; 16 solar sites; 3 wind turbines (out of service); capability for digester gas and biomass co-firing) | <1 (<1%) | 5 | <1% |
| Total | 33.347 | 142,151 | 100% |
* This is down from 52% in 2011 (74,583 kWh); growth in nuclear and especially natural gas (6,809 million kWh in 2011) generation made up most of the difference.
Source: EPB (2012); TVA (2014b, 12)