How many power plants does Great River Hydro operate?

EIA-860M lists 13 operating plants against “Great River Hydro, LLC” for 2026-07, totalling 563 MW of nameplate capacity in 3 states.

Is Great River Hydro the owner of these plants?

EIA-860M names one reporting entity per generator. That entity operates the plant on the survey; ownership can sit with a parent, a partnership or a tax-equity structure that the form does not record.

Why are affiliates listed separately?

Because EIA files them separately. Rolling subsidiaries into a parent would need an ownership map EIA-860M does not publish, so this page does not invent one.

Great River Hydro power plants

Every generating plant EIA-860M files against Great River Hydro for 2026-07: 13 plants, 563 MW of nameplate capacity, across 3 states and 1 energy source.

EIA files this entity as “Great River Hydro, LLC”.

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: 13
Nameplate capacity: 563 MW
States: 3; MA, NH, VT
Energy sources: 1

Great River Hydro plants by energy source

Hydro13 plants · 563 MW

Full list of Great River Hydro power plants

Power plants operated by Great River Hydro, LLC

S C MooreConventional Hydroelectric	Great River Hydro, LLC	Grafton	195.4	5	1957	Operating
ComerfordConventional Hydroelectric	Great River Hydro, LLC	Grafton	167.8	4	1930	Operating
Bellows FallsConventional Hydroelectric	Great River Hydro, LLC	Windham	40.8	3	1928	Operating
Vernon DamConventional Hydroelectric	Great River Hydro, LLC	Windham	35.9	10	1909	Operating
WilderConventional Hydroelectric	Great River Hydro, LLC	Windsor	35.6	3	1950	Operating
HarrimanConventional Hydroelectric	Great River Hydro, LLC	Windham	33.6	3	1924	Operating
Deerfield 5Conventional Hydroelectric	Great River Hydro, LLC	Berkshire	17.5	1	1974	Operating
McindoesConventional Hydroelectric	Great River Hydro, LLC	Caledonia	10.4	4	1931	Operating
ShermanConventional Hydroelectric	Great River Hydro, LLC	Franklin	7.2	1	1926	Operating
Deerfield 2Conventional Hydroelectric	Great River Hydro, LLC	Franklin	4.8	3	1913	Operating
Deerfield 3Conventional Hydroelectric	Great River Hydro, LLC	Franklin	4.8	3	1912	Operating
Deerfield 4Conventional Hydroelectric	Great River Hydro, LLC	Franklin	4.8	3	1912	Operating
SearsburgConventional Hydroelectric	Great River Hydro, LLC	Bennington	4	1	1922	Operating

Great River Hydro: FAQ

How many power plants does Great River Hydro operate?: EIA-860M lists 13 operating plants against “Great River Hydro, LLC” for 2026-07, totalling 563 MW of nameplate capacity in 3 states.
Is Great River Hydro the owner of these plants?: EIA-860M names one reporting entity per generator. That entity operates the plant on the survey; ownership can sit with a parent, a partnership or a tax-equity structure that the form does not record.
Why are affiliates listed separately?: Because EIA files them separately. Rolling subsidiaries into a parent would need an ownership map EIA-860M does not publish, so this page does not invent one.