Lewis Smith Dam
Hydro power plant in Walker County, Alabama. 181 MW of nameplate capacity across 2 generators, operated by Alabama Power Co.
Also known as EIA plant 18
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 181 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- September 1961First generator online
- Operator
- Alabama Power CoEIA operator ID 195
- Grid
- SOCOBalancing authority SOCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Walker County, AL33.9406, −87.1077
- EIA plant ID
- 18EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Lewis Smith Dam produces
Free · EIA-923Net generation, 2025
275 GWh
274,559 MWh, final
Capacity factor, 2025
17.3%
2024: 13.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
202.9–410.2
GWh a year. Low 2017, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 234,693 | Not reported | 12 of 12 |
| 2001 | 330,520 | Not reported | 12 of 12 |
| 2002 | 308,112 | Not reported | 12 of 12 |
| 2003 | 329,846 | Not reported | 12 of 12 |
| 2004 | 301,783 | Not reported | 12 of 12 |
| 2005 | 215,983 | Not reported | 12 of 12 |
| 2006 | 185,316 | Not reported | 12 of 12 |
| 2007 | 115,093 | Not reported | 12 of 12 |
| 2008 | 124,744 | Not reported | 12 of 12 |
| 2009 | 442,277 | Not reported | 12 of 12 |
| 2010 | 214,662 | 15.6% | 12 of 12 |
| 2011 | 244,503 | 17.7% | 12 of 12 |
| 2012 | 220,465 | 15.9% | 12 of 12 |
| 2013 | 321,245 | Not reported | 12 of 12 |
| 2014 | 243,605 | 15.4% | 12 of 12 |
| 2015 | 241,085 | 15.2% | 12 of 12 |
| 2016 | 233,853 | 14.7% | 12 of 12 |
| 2017 | 202,916 | 12.8% | 12 of 12 |
| 2018 | 237,885 | 15.0% | 12 of 12 |
| 2019 | 410,236 | 25.9% | 12 of 12 |
| 2020 | 392,983 | 24.7% | 12 of 12 |
| 2021 | 387,891 | 24.5% | 12 of 12 |
| 2022 | 325,963 | 20.6% | 12 of 12 |
| 2023 | 233,391 | 14.7% | 12 of 12 |
| 2024 | 219,011 | 13.8% | 12 of 12 |
| 2025 | 274,559 | 17.3% | 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 | 90.5 | September 1961 |
| 2 | Conventional Hydroelectric | 90.5 | July 1962 |
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 Alabama 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 Lewis Smith Dam
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Questions about Lewis Smith Dam
How much power does Lewis Smith Dam produce?
Lewis Smith Dam reported 274,559 MWh (275 GWh) of net generation in 2025, a 17.3% capacity factor on 181 MW of nameplate capacity.
Where is Lewis Smith Dam?
Lewis Smith Dam is in Walker County, Alabama, at 33.9406, −87.1077. It is in the Southern Company Services, Inc. - Trans balancing area (SOCO).
Who operates Lewis Smith Dam?
EIA-860M for August 2026 lists Alabama Power Co as the operator (EIA operator ID 195). The operator is not always the owner.
When did Lewis Smith Dam start operating?
Its first generator began operating in September 1961, 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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page