How many hydroelectric power plants are in Oklahoma?

10, with 824 MW of nameplate capacity between them, spread over 8 counties. That is the EIA-860M operating count for 2026-07.

Is there a map of Oklahoma hydroelectric power plants?

Yes — the map above. Each dot is one hydroelectric power plant, sized by nameplate capacity and placed at the coordinates EIA files for it.

Which is the largest hydroelectric power plant in Oklahoma?

Pensacola, at 130 MW. The table is sorted largest first, so the rest follow it.

Is there a hydroelectric power plant near me in Oklahoma?

The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.

Which grid operator runs Oklahoma's hydroelectric power plants?

No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Oklahoma is largely a vertically integrated utility rather than an organised market.

How current is this, and what is left out?

EIA-860M for 2026-07. Conventional hydroelectric. Pumped storage is counted separately. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.

Hydroelectric Power Plants in Oklahoma

Every operating hydroelectric power plant in Oklahoma on EIA-860M for 2026-07: 10 plants, 32 generating units and 824 MW of nameplate capacity across 8 counties.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants: 10; 32 generating units
Nameplate capacity: 824 MW
Counties: 8
Grid operator: Mixed; no single ISO covers a majority

Map of hydroelectric power plants in Oklahoma

Every one of the 10 plants is drawn at the coordinate EIA files for it.

Loading map…

Hydro · 10

List of hydroelectric power plants in Oklahoma

Sort by any column. Capacity is nameplate, summed across every generating unit EIA lists at the site.

hydroelectric power plants in Oklahoma

PensacolaConventional Hydroelectric	Grand River Dam Authority	Mayes	130.1	7	1940	Operating
MarkhamConventional Hydroelectric	Grand River Dam Authority	Mayes	128.4	4	1964	Operating
Robert S KerrConventional Hydroelectric	USCE-Tulsa District	Sequoyah	110	4	1971	Operating
Broken Bow DamConventional Hydroelectric	USCE-Tulsa District	McCurtain	100	2	1970	Operating
Eufaula DamConventional Hydroelectric	USCE-Tulsa District	Haskell	90	3	1964	Operating
Webbers FallsConventional Hydroelectric	USCE-Tulsa District	Muskogee	75	3	1973	Operating
Keystone DamConventional Hydroelectric	USCE-Tulsa District	Tulsa	70	2	1968	Operating
Fort GibsonConventional Hydroelectric	USCE-Tulsa District	Cherokee	44.8	4	1953	Operating
Tenkiller FerryConventional Hydroelectric	USCE-Tulsa District	Sequoyah	39	2	1953	Out of service but expected to return to service in next calendar year
Kaw HydroConventional Hydroelectric	Oklahoma Municipal Power Authority	Kay	37	1	1989	Operating

Largest hydroelectric power plants in Oklahoma

1PensacolaMayes County, Oklahoma130.1 MW
2MarkhamMayes County, Oklahoma128.4 MW
3Robert S KerrSequoyah County, Oklahoma110 MW
4Broken Bow DamMcCurtain County, Oklahoma100 MW
5Eufaula DamHaskell County, Oklahoma90 MW
6Webbers FallsMuskogee County, Oklahoma75 MW
7Keystone DamTulsa County, Oklahoma70 MW
8Fort GibsonCherokee County, Oklahoma44.8 MW
9Tenkiller FerrySequoyah County, Oklahoma39 MW
10Kaw HydroKay County, Oklahoma37 MW

Hydroelectric power plants by county in Oklahoma

The county EIA files against each plant. It is the fastest way to find the plant nearest a given town.

County	Plants	Nameplate MW
Mayes	2	258.5
Sequoyah	2	149
McCurtain	1	100
Haskell	1	90
Muskogee	1	75
Tulsa	1	70
Cherokee	1	44.8
Kay	1	37

Hydroelectric Power Plants in Oklahoma: FAQ

How many hydroelectric power plants are in Oklahoma?: 10, with 824 MW of nameplate capacity between them, spread over 8 counties. That is the EIA-860M operating count for 2026-07.
Is there a map of Oklahoma hydroelectric power plants?: Yes — the map above. Each dot is one hydroelectric power plant, sized by nameplate capacity and placed at the coordinates EIA files for it.
Which is the largest hydroelectric power plant in Oklahoma?: Pensacola, at 130 MW. The table is sorted largest first, so the rest follow it.
Is there a hydroelectric power plant near me in Oklahoma?: The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.
Which grid operator runs Oklahoma's hydroelectric power plants?: No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Oklahoma is largely a vertically integrated utility rather than an organised market.
How current is this, and what is left out?: EIA-860M for 2026-07. Conventional hydroelectric. Pumped storage is counted separately. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.