Pensacola — Plant Summary
- EIA Plant ID
- 2981
- Capacity
- 130.1 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Mayes, OK
- Operating Since
- 1940
- Generators
- 7
- Operator
- Grand River Dam Authority
- Parent Company
- Grand River Dam Authority
- Annual Generation
- 349,131 MWh
- Capacity Factor
- 30.7%
- Balancing Authority
- Southwest Power Pool
- ISO/RTO
- SPP
- NERC Region
- MRO
Pensacola
OperatingHydro
Ranked #2 of 11 Hydro plants in OK#149 of 1454 nationally
130.1 MW Hydro operating in Mayes, OK — Southwest Power Pool
EIAGEMWD
130.1 MW
Nameplate Capacity
7
Generators
units
Conventional Hydroelectric
Technology
1940
Operating Since
Location
Coordinates
36.4675, -95.0414
County
Mayes, OK
Nearby Plants
- Saltbranch Solar 1Solar73 MW · 22.6 km
- Saltbranch 2Solar73 MW · 22.6 km
- Twelvemile Solar 1 & 2Solar152 MW · 22.6 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Grand River Dam Authority | Grand River Dam Authority | — |
| Owner(s) | Grand River Dam Authority | Grand River Dam Authority | — |
| Status | Operating | operating | — |
Ownership Chain
About
The Pensacola Dam, also known as the Grand River Dam, is a multiple-arch buttress dam located between the towns of Disney and Langley on the Grand River in Mayes County, Oklahoma. The dam is operated by the Grand River Dam Authority and creates Grand Lake o' the Cherokees. After decades of vision and planning, it was constructed between 1938 and 1940 for the purposes of hydroelectric power generation, flood control and recreation. It is Oklahoma's first hydroelectric power plant and is referred to as the longest multiple-arch dam in the world.
Read more on WikipediaThe Pensacola hydroelectric plant is located in Mayes County, Oklahoma. The plant, which began operating in 1940, has a total capacity of 130.1 MW across seven generators. It is owned and operated by the Grand River Dam Authority. The primary fuel source is water, and the plant utilizes conventional hydroelectric technology. Pensacola is the second-largest of five hydroelectric plants in Oklahoma, and ranks 149th out of 194 nationally.
Pensacola operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. The plant's latest annual generation was 349,131 MWh, resulting in a capacity factor of 30.7%. Financial data indicates a power purchase agreement (PPA) price of $8.5 per MWh, as reported to FERC.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Southwest Power Pool
Grid Voltage
69 kV
Regulatory Status
RE
Entity Type
State
Sector
Electric Utility
Generation
10.0K MWh
Latest Month
349.1K MWh
Annual Generation
30.7%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Electric Quarterly ReportsHIGH
$8.5/MWh
PPA Price
Grand River Dam Authority
Contract Seller
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
SPP
LMP Node
GRDAPENSA1UN1
Pricing Hub
SPP South Hub
Node Source
EIA-860 direct report
News & Articles (7)Beta
Last updated 2026-03-26
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