How many hydroelectric power plants are in Wyoming?

16, with 303 MW of nameplate capacity between them, spread over 6 counties. That is the EIA-860M operating count for 2026-07.

Is there a map of Wyoming 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 Wyoming?

Fremont Canyon, at 67 MW. The table is sorted largest first, so the rest follow it.

Is there a hydroelectric power plant near me in Wyoming?

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 Wyoming's hydroelectric power plants?

No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Wyoming 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 Wyoming

Every operating hydroelectric power plant in Wyoming on EIA-860M for 2026-07: 16 plants, 32 generating units and 303 MW of nameplate capacity across 6 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: 16; 32 generating units
Nameplate capacity: 303 MW
Counties: 6
Grid operator: Mixed; no single ISO covers a majority

Map of hydroelectric power plants in Wyoming

Every one of the 16 plants is drawn at the coordinate EIA files for it.

Loading map…

Hydro · 16

List of hydroelectric power plants in Wyoming

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

hydroelectric power plants in Wyoming

Fremont CanyonConventional Hydroelectric	U S Bureau of Reclamation	Natrona	66.8	2	1960	Operating
SeminoeConventional Hydroelectric	U S Bureau of Reclamation	Carbon	51.6	3	1939	Operating
AlcovaConventional Hydroelectric	U S Bureau of Reclamation	Natrona	41.4	2	1955	Operating
GlendoConventional Hydroelectric	U S Bureau of Reclamation	Platte	38	2	1958	Operating
KortesConventional Hydroelectric	U S Bureau of Reclamation	Carbon	36	3	1950	Operating
Buffalo BillConventional Hydroelectric	U S Bureau of Reclamation	Park	18	3	1992	Operating
BoysenConventional Hydroelectric	U S Bureau of Reclamation	Fremont	15	2	1952	Operating
FontenelleConventional Hydroelectric	U S Bureau of Reclamation	Lincoln	10	1	1968	Operating
GuernseyConventional Hydroelectric	U S Bureau of Reclamation	Platte	6.4	2	1927	Operating
Heart MountainConventional Hydroelectric	U S Bureau of Reclamation	Park	5	1	1948	Operating
Spirit MountainConventional Hydroelectric	U S Bureau of Reclamation	Park	4.5	1	1994	Operating
Shoshone (WY)Conventional Hydroelectric	U S Bureau of Reclamation	Park	3	1	1922	Operating
Garland Canal Power PlantConventional Hydroelectric	Shoshone Irrigation District	Park	2.9	1	1983	Operating
Swift CreekConventional Hydroelectric	Lower Valley Energy Inc	Lincoln	1.7	3	2009	Operating
Pilot ButteConventional Hydroelectric	U S Bureau of Reclamation	Fremont	1.6	2	1925	Out of service and NOT expected to return to service in next calendar year
Strawberry CreekConventional Hydroelectric	Lower Valley Energy Inc	Lincoln	1.5	3	1940	Operating

Largest hydroelectric power plants in Wyoming

1Fremont CanyonNatrona County, Wyoming66.8 MW
2SeminoeCarbon County, Wyoming51.6 MW
3AlcovaNatrona County, Wyoming41.4 MW
4GlendoPlatte County, Wyoming38 MW
5KortesCarbon County, Wyoming36 MW
6Buffalo BillPark County, Wyoming18 MW
7BoysenFremont County, Wyoming15 MW
8FontenelleLincoln County, Wyoming10 MW
9GuernseyPlatte County, Wyoming6.4 MW
10Heart MountainPark County, Wyoming5 MW

Hydroelectric power plants by county in Wyoming

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

County	Plants	Nameplate MW
Natrona	2	108.2
Carbon	2	87.6
Platte	2	44.4
Park	5	33.4
Fremont	2	16.6
Lincoln	3	13.2

Hydroelectric Power Plants in Wyoming: FAQ

How many hydroelectric power plants are in Wyoming?: 16, with 303 MW of nameplate capacity between them, spread over 6 counties. That is the EIA-860M operating count for 2026-07.
Is there a map of Wyoming 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 Wyoming?: Fremont Canyon, at 67 MW. The table is sorted largest first, so the rest follow it.
Is there a hydroelectric power plant near me in Wyoming?: 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 Wyoming's hydroelectric power plants?: No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Wyoming 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.