Watauga
Carter County, Tennessee · EIA plant ID 3418 · Operator: Tennessee Valley Authority
Nameplate58MWSummer 67 MW
Generators2in service
Net generation94GWh12 mo to Dec 2025
Capacity factor16%hydro units, summer MW
Heat rate—thermal plants only
First online1949
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 86.1 | 14.7% | — |
| 2002 | 89.8 | 16.0% | — |
| 2003 | 192.9 | 31.6% | — |
| 2004 | 113.4 | 18.5% | — |
| 2005 | 126.5 | 20.7% | — |
| 2006 | 110.3 | 18.8% | — |
| 2007 | 92.2 | 15.7% | — |
| 2008 | 60.1 | 10.2% | — |
| 2009 | 113.9 | 19.4% | — |
| 2010 | 108.1 | 18.4% | — |
| 2011 | 127 | 21.6% | — |
| 2012 | 129.2 | 22.0% | — |
| 2013 | 232.5 | 39.6% | — |
| 2014 | 70.8 | 12.1% | — |
| 2015 | 132 | 22.5% | — |
| 2016 | 89.9 | 15.3% | — |
| 2017 | 77.2 | 13.2% | — |
| 2018 | 180.7 | 30.8% | — |
| 2019 | 173.2 | 29.5% | — |
| 2020 | 241.2 | 41.0% | — |
| 2021 | 140.6 | 23.9% | — |
| 2022 | 109.4 | 18.6% | — |
| 2023 | 113 | 19.3% | — |
| 2024 | 154.8 | 26.3% | — |
| 2025 | 94 | 16.0% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 28.8 | 37.9 | Sep 1949 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 28.8 | 29.1 | Aug 1949 | Operating | — | coming soon |
Owner / operator
Operator: Tennessee Valley Authority. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Tennessee Valley Authority | 100.0% | 58 MW |
Nearby plants
Within 80 km.
| Wilbur | 11 MW | 0 km |
| South Holston | 39 MW | 20.5 km |
| Mountain Home Energy Center | 4 MW | 22.8 km |
| Bristol Plant | retired | 29 km |
| Boone Dam | 106 MW | 30 km |
| SR Gray | 6 MW | 32.9 km |