Yonah
Hydro power plant in Stephens County, Georgia. 22.5 MW of nameplate capacity across 3 generators, operated by Georgia Power Co.
Also known as Yonah Dam Hydroelectric Station · EIA plant 729
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 22.5 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- October 1925First generator online
- Operator
- Georgia Power CoEIA operator ID 7140
- Grid
- SOCOBalancing authority SOCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Stephens County, GA34.6821, −83.3418
- EIA plant ID
- 729EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Yonah produces
Free · EIA-923Net generation, 2025
35.4 GWh
35,371 MWh, final
Capacity factor, 2025
17.9%
2024: 21.3%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
31.5–82.9
GWh a year. Low 2017, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 24,147 | Not reported | 12 of 12 |
| 2001 | 20,663 | Not reported | 12 of 12 |
| 2002 | 32,997 | Not reported | 12 of 12 |
| 2003 | 69,370 | Not reported | 12 of 12 |
| 2004 | 54,863 | Not reported | 12 of 12 |
| 2005 | 70,208 | Not reported | 12 of 12 |
| 2006 | 27,480 | Not reported | 12 of 12 |
| 2007 | 21,473 | Not reported | 12 of 12 |
| 2008 | 22,254 | Not reported | 12 of 12 |
| 2009 | 59,392 | Not reported | 12 of 12 |
| 2010 | 51,050 | 25.9% | 12 of 12 |
| 2011 | 35,087 | 17.8% | 12 of 12 |
| 2012 | 31,087 | 15.7% | 12 of 12 |
| 2013 | 77,894 | 39.5% | 12 of 12 |
| 2014 | 40,915 | 20.8% | 12 of 12 |
| 2015 | 41,734 | 21.2% | 12 of 12 |
| 2016 | 36,622 | 18.5% | 12 of 12 |
| 2017 | 31,521 | 16.0% | 12 of 12 |
| 2018 | 77,143 | 39.1% | 12 of 12 |
| 2019 | 70,495 | 35.8% | 12 of 12 |
| 2020 | 82,944 | 42.0% | 12 of 12 |
| 2021 | 63,046 | 32.0% | 12 of 12 |
| 2022 | 49,217 | 25.0% | 12 of 12 |
| 2023 | 35,023 | 17.8% | 12 of 12 |
| 2024 | 42,159 | 21.3% | 12 of 12 |
| 2025 | 35,371 | 17.9% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 7.5 | October 1925 |
| 2 | Conventional Hydroelectric | 7.5 | November 1925 |
| 3 | Conventional Hydroelectric | 7.5 | December 1925 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Georgia Power Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Yonah
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Questions about Yonah
How much power does Yonah produce?
Yonah reported 35,371 MWh (35.4 GWh) of net generation in 2025, a 17.9% capacity factor on 22.5 MW of nameplate capacity.
Where is Yonah?
Yonah is in Stephens County, Georgia, at 34.6821, −83.3418. It is in the Southern Company Services, Inc. - Trans balancing area (SOCO).
Who operates Yonah?
EIA-860M for August 2026 lists Georgia Power Co as the operator (EIA operator ID 7140). The operator is not always the owner.
When did Yonah start operating?
Its first generator began operating in October 1925, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page