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Niagara

Hydro power plant · Roanoke County, Virginia

Nameplate capacity
3.6 MW
Rank in Virginia
#215
of 261 plants
In service since
1954
June 1954

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Appalachian Power Co
County
Roanoke County
Generating units
2
Share of state capacity
0.01%
Rank among hydro plants in Virginia
#15 of 24
EIA plant code
3778

Generating units

Individual generating units at Niagara
UnitTechnologyNameplateSummerOnlineStatus
1Conventional Hydroelectric2.4 MW0.6 MW1954Operating
2Conventional Hydroelectric1.2 MW1.2 MW1954Operating

Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.

Similarly sized plants in Virginia

Gateway GenOther3.6 MW
HenricoOther3.6 MW
DowntownOther3.2 MW
HCE Roark Mill Solar, LLCSolar3.2 MW

About this data

From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 3.6 MW solar plant and a 3.6 MW nuclear plant have the same entry here and produce very different amounts of electricity.

“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Virginia power plants · What Virginia actually generates