World Power Plants

Stewart Mountain is a 13 MW hydroelectric power plant in the United States, operated by Salt River Project since 1930. Ranked #589 of 1469 hydro plants in the United States. Its 13 MW represents 0.01% of the country's total hydro capacity of 117,947 MW. The largest hydro plant in the United States is the Grand Coulee Dam at 6,809 MW, making Stewart Mountain 524.54 times smaller. Nearby plants within 50 km include Santan (1326 MW, Gas) and Ocotillo (916 MW, Gas). The facility is located in Arizona, approximately 40 km southeast of Phoenix.

Capacity
13 MW
Commissioning Year
1930

96 years old

Owner
Salt River Project
Location
33.5661°, -111.5360°

United States of America, North America

Context & rankings
  • 4,488. largest of 10,098 plants in United States of America
  • #22,127 worldwide by installed capacity
  • #5,099 of 8,493 Hydroelectric plants worldwide
Age & fleet comparison

96 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Salt River Project operates 17 plants totalling 8,121 MW

Regional density

44 plants within 100 km, 9,180 MW combined

Nearest plant: Mormon Flat (8.7 km)

Location

Coordinates:: 33.566100, -111.536000
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Carbon Footprint

Zero Direct Emissions

Stewart Mountain is a hydro power plant producing approximately 46 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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