W R Gianelli

💧 HydroelectricElectric Utility424 MW capacity

48th largest plant in California · 820th nationally

W R Gianelli is a hydroelectric power plant in California with a nameplate capacity of 424 MW.

Capacity424 MWnameplate
Annual GenerationEPA eGRID
Capacity Factor
Annual CO₂metric tons

Location

Plant NameW R Gianelli
OperatorCalifornia Dept. Of Water Resources
CityGustine
CountyMerced County
StateCalifornia
ZIP95322
Coordinates37.06920, -121.07720

This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.

HydroelectricWindSolarBiomassBattery Storage

Generators (8)

IDTechnologyFuelCapacityStatusOnline
1Hydroelectric Pumped StorageWater53.0 MWOperating1968
2Hydroelectric Pumped StorageWater53.0 MWOperating1968
3Hydroelectric Pumped StorageWater53.0 MWOperating1967
4Hydroelectric Pumped StorageWater53.0 MWOperating1967
5Hydroelectric Pumped StorageWater53.0 MWOperating1967
6Hydroelectric Pumped StorageWater53.0 MWOperating1967
7Hydroelectric Pumped StorageWater53.0 MWOperating1967
8Hydroelectric Pumped StorageWater53.0 MWOperating1967

Ownership

OwnerLocationShare
California Dept. Of Water ResourcesSacramento, CA5500.0%
U S Bureau Of ReclamationDenver, CO4500.0%

Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.

Grid context

NERC RegionWECC
Balancing AuthorityCalifornia Independent System Operator

About Hydroelectric plants

Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.

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