Guntersville — Plant Summary
- EIA Plant ID
- 48
- Capacity
- 115.2 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Marshall, AL
- Operating Since
- 1939
- Generators
- 4
- Operator
- Tennessee Valley Authority
- Parent Company
- Tennessee Valley Authority
- Annual Generation
- 454,790 MWh
- Capacity Factor
- 44.9%
- Balancing Authority
- Tennessee Valley Authority
- ISO/RTO
- —
- NERC Region
- SERC
Guntersville
OperatingHydro
Ranked #11 of 23 Hydro plants in AL#163 of 1454 nationally
115.2 MW Hydro operating in Marshall, AL — Tennessee Valley Authority
EIAGEMWD
115.2 MW
Nameplate Capacity
4
Generators
units
Conventional Hydroelectric
Technology
1939
Operating Since
Location
Coordinates
34.4213, -86.3939
County
Marshall, AL
Nearby Plants
- AlbertvilleDistillate Oil4 MW · 17.1 km
- Redstone Arsenal HybridBESS11 MW · 29.4 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tennessee Valley Authority | Tennessee Valley Authority | — |
| Owner(s) | Tennessee Valley Authority | Tennessee Valley Authority | — |
| Status | Operating | operating | — |
Ownership Chain
About
Guntersville Dam is a hydroelectric dam on the Tennessee River in Marshall County, Alabama. It is one of nine dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the late 1930s as part of a New Deal era initiative to create a continuous navigation channel on the entire length of the river and bring flood control and economic development to the region. The dam impounds the Guntersville Lake of 67,900 acres (27,500 ha), and its tailwaters feed into Wheeler Lake.
Read more on WikipediaThe Guntersville hydroelectric plant is located in Marshall County, Alabama. It has a total capacity of 115.2 MW across four generators and is owned and operated by the Tennessee Valley Authority (TVA). The plant began operating in 1939, utilizing conventional hydroelectric technology and water as its primary fuel source. Guntersville operates within the Tennessee Valley Authority balancing authority and the SERC NERC region.
In the most recent year with available data, Guntersville generated 454,790 MWh of electricity, achieving a capacity factor of 44.9%. The plant is ranked as the 11th largest out of 13 hydroelectric facilities in Alabama, and 163rd out of 194 nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
Tennessee Valley Authority
Grid Voltage
161 kV
Regulatory Status
RE
Entity Type
Federal
Sector
Electric Utility
Generation
48.2K MWh
Latest Month
454.8K MWh
Annual Generation
44.9%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
General
TVA to spend more than $2 billion on coal ash over next four years
The country's largest public utility estimates it will spend around $2.1 billion on coal ash, what's left after coal is burned for energy.
AL.com·2 weeks ago
Regulatory·federal policy
Randall Jones joins TVA board, restoring quorum and resuming critical Southeast energy decisions
GUNTERSVILLE, Ala. — Randall Jones of Guntersville was sworn into office as a member of the Tennessee Valley Authority Board of Directors in...
Randall Jones (other)Tennessee Valley Authority (regulator)
rocketcitynow.com·2 months ago
General
5 takeaways on TVA’s future under Trump from Senate hearing
President Donald Trump's nominees to the Tennessee Valley Authority board committed to keeping the utility public in a Senate hearing but...
Chattanooga Times Free Press·5 months ago
General
5 takeaways on TVA’s future under Trump from Senate hearing
President Donald Trump's nominees to the Tennessee Valley Authority board committed to keeping the utility public in a Senate hearing but...
Chattanooga Times Free Press·5 months ago
Last updated 2026-03-26
View all 10 articles