World Power Plants

Mammoth Pool is ranked #1464 of 10,047 power generation facilities in the United States, mirroring the capacity of 190 MW that it shares with other plants in its category. This hydroelectric facility, operated by Southern California Edison Co since its commissioning in 1960, represents a mere 0.01% of the national energy capacity, which primarily relies on natural gas. However, Mammoth Pool’s role in the local energy ecosystem is crucial, particularly given its proximity to other significant hydro plants such as Helms Pumped Storage with a capacity of 1,053 MW and J S Eastwood, which generates 199.8 MW. This cluster of hydroelectric power plants in the Sierra Nevada region underscores the potential for renewable energy generation in an area that benefits from abundant water resources. Hydro technology employed at Mammoth Pool efficiently converts the kinetic energy of flowing water into electricity, contributing to California's energy mix in a time of increasing demand for sustainable energy solutions. As part of the broader U.S. energy profile, where the total capacity stands at an impressive 1,386,385 MW, Mammoth Pool's contribution, albeit small, supports efforts to diversify the energy supply and reduce dependence on fossil fuels. The facility’s operational longevity also highlights the effectiveness of hydroelectric power as a reliable energy source. With the energy landscape evolving, Mammoth Pool’s continued presence in California’s energy grid is essential for transitioning toward a cleaner energy future, reinforcing the state’s commitment to renewable energy and sustainability.

Capacity
190 MW
Commissioning Year
1960

66 years old

Owner
Southern California Edison Co
Location
37.2203°, -119.3380°

United States of America, North America

Context & rankings
  • 1,515. largest of 10,098 plants in United States of America
  • #7,644 worldwide by installed capacity
  • #1,514 of 8,493 Hydroelectric plants worldwide
  • 0.01% of the installed capacity of United States of America
Age & fleet comparison

66 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Southern California Edison Co operates 61 plants totalling 2,582 MW

Regional density

79 plants within 100 km, 3,819 MW combined

Nearest plant: Big Creek 8 (1.4 km)

Location

Coordinates:: 37.220300, -119.338000
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Carbon Footprint

Zero Direct Emissions

Mammoth Pool is a hydro power plant producing approximately 666 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~24 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Hydro
Energy Source
Renewable
Country
United States of America
Continent
North America
Data Source
Global Power Plant Database

United States of AmericaEnergy Profile

10,098
Total Plants
1420.7 GW
Total Capacity
GasCoalNuclearWind
Top Fuels

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