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210.6 MW Hydro operating in Elmore, AL — Southern Company Services, Inc. - Trans
210.6 MW
Nameplate Capacity
4
Generators
units
Conventional Hydroelectric
Technology
1927
Operating Since
Coordinates
32.6804, -85.9114
County
Elmore, AL
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Alabama Power Co | Alabama Power | — |
| Owner(s) | Alabama Power Co | Southern | — |
| Status | Operating | operating | — |
Martin Dam is a concrete arch gravity dam on the Tallapoosa River in Alabama in the United States, about 10 miles (16 km) southwest of Dadeville. Impounding the 40,000-acre (16,000 ha) Lake Martin, the dam was built in the 1920s to provide flood control, hydroelectric power generation and water supply. Originally known as the Cherokee Bluffs dam, the dam is named in honor of Thomas Wesley Martin, president of the Alabama Power Company during the dam's construction. The African American community of Kowaliga (Benson) was submerged by Lake Martin as well as Sousanna and historic Native American sites.
Read more on WikipediaMartin Dam is a hydroelectric power plant located in Elmore County, Alabama. The plant, which began operating in 1927, has a total capacity of 210.6 MW across four generators. It is owned by Southern Company and operated by Alabama Power Company. The primary fuel source for the plant is water (WAT), and the plant utilizes conventional hydroelectric technology.
In the most recent year with available data, Martin Dam generated 305,920 MWh of electricity, resulting in a capacity factor of 16.6%. The plant operates within the Southern Company Services, Inc. - Trans balancing authority and the SERC NERC region. According to available data, the installed cost of the plant was $385 per kW. Martin Dam is ranked as the 4th largest hydroelectric plant out of 13 in Alabama, and 89th out of 194 nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
16.2K MWh
Latest Month
305.9K MWh
Annual Generation
16.6%
Capacity Factor
Energy storage · ALABAMA POWER COMPANY · Data from 2015–2024
$815/kW
Installed Cost
$4.6/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 Martin DamSouthern Company Services, Inc. - Trans (SOCO)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility