World Power Plants

Marys Lake is an 8.1 MW hydroelectric power plant in the United States, operated by the U.S. Bureau of Reclamation since 1951. Ranked #730 of 1,469 hydro plants in the United States, it accounts for 0.01% of the country's total hydro capacity of 117,947 MW. The largest hydro plant in the United States is Grand Coulee Dam at 6,809 MW, making Marys Lake 840 times smaller. Nearby plants include Valmont Combustion Turbine Project (142.2 MW, Gas), Flatiron (94.5 MW, Hydro), and Valmont (59.3 MW, Gas). The facility is located in Colorado, approximately 70 km northwest of Denver.

Capacity
8.1 MW
Commissioning Year
1951

75 years old

Owner
U S Bureau of Reclamation
Location
40.3441°, -105.5343°

United States of America, North America

Context & rankings
  • 5,148. largest of 10,098 plants in United States of America
  • #25,756 worldwide by installed capacity
  • #5,840 of 8,493 Hydroelectric plants worldwide
Age & fleet comparison

75 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

U S Bureau of Reclamation operates 59 plants totalling 15,054 MW

Regional density

76 plants within 100 km, 6,591 MW combined

Nearest plant: Estes (4.2 km)

Location

Coordinates:: 40.344100, -105.534300
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Carbon Footprint

Zero Direct Emissions

Marys Lake is a hydro power plant producing approximately 28 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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