Yonah
Stephens County, Georgia · EIA plant ID 729 · Operator: Georgia Power Co
Nameplate23MWSummer 29 MW
Generators3in service
Net generation35GWh12 mo to Dec 2025
Capacity factor14%hydro units, summer MW
Heat rate—thermal plants only
First online1925
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 | 20.7 | 8.3% | — |
| 2002 | 33 | 13.2% | — |
| 2003 | 69.4 | 27.8% | — |
| 2004 | 54.9 | 21.9% | — |
| 2005 | 70.2 | 28.1% | — |
| 2006 | 27.5 | 11.0% | — |
| 2007 | 21.5 | 8.6% | — |
| 2008 | 22.3 | 8.9% | — |
| 2009 | 59.4 | 23.8% | — |
| 2010 | 51.1 | 20.4% | — |
| 2011 | 35.1 | 14.1% | — |
| 2012 | 31.1 | 12.4% | — |
| 2013 | 77.9 | 31.2% | — |
| 2014 | 40.9 | 16.4% | — |
| 2015 | 41.7 | 16.7% | — |
| 2016 | 36.6 | 14.6% | — |
| 2017 | 31.5 | 12.6% | — |
| 2018 | 77.1 | 30.9% | — |
| 2019 | 70.5 | 28.2% | — |
| 2020 | 82.9 | 33.1% | — |
| 2021 | 63 | 25.3% | — |
| 2022 | 49.2 | 19.7% | — |
| 2023 | 35 | 14.0% | — |
| 2024 | 42.2 | 16.8% | — |
| 2025 | 35.4 | 14.2% | — |
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 | 7.5 | 9.5 | Oct 1925 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 7.5 | 9.5 | Nov 1925 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 7.5 | 9.5 | Dec 1925 | Operating | — | coming soon |
Owner / operator
Operator: Georgia Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Georgia Power Co | 100.0% | 23 MW |
Nearby plants
Within 80 km.
| Tugalo | 45 MW | 0.9 km |
| Tallulah Falls | 72 MW | 4.8 km |
| Terrora | 16 MW | 12.5 km |
| Nacoochee | 5 MW | 18.3 km |
| Burton Dam | 6 MW | 20.9 km |
| Valenite | 3 MW | 28.2 km |