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181 MW Hydro operating in Walker, AL — Southern Company Services, Inc. - Trans
181 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1961
Operating Since
Coordinates
33.9406, -87.1077
County
Walker, AL
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Alabama Power Co | Alabama Power | — |
| Owner(s) | Alabama Power Co | Southern | — |
| Status | Operating | operating | — |
Lewis Smith Dam is a hydroelectric power plant located in Walker County, Alabama. The plant, which began operating in 1961, has a total capacity of 181 MW derived from two generators utilizing conventional hydroelectric technology. It is owned by Southern Company and operated by Alabama Power Co. The plant's primary fuel source is water (WAT).
In the most recent year of record, Lewis Smith Dam generated 219,011 MWh of electricity, resulting in a capacity factor of 13.9%. The plant operates within the balancing authority of Southern Company Services, Inc. - Trans and is situated in the SERC NERC region. According to available data, the plant ranks 5th out of 13 hydroelectric facilities in Alabama and 102nd out of 194 nationally. The installed cost of the plant was $354.71 per kW.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
15.1K MWh
Latest Month
219.0K MWh
Annual Generation
13.9%
Capacity Factor
Energy storage · ALABAMA POWER COMPANY · Data from 2015–2024
$387/kW
Installed Cost
$8.1/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
Last updated 2026-03-26
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ask pi about Lewis Smith DamSouthern Company Services, Inc. - Trans (SOCO)
Grid Voltage
161.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility