Marys Lake

n/a, Estes Park, CO 80517

Plant Summary Information

Marys Lake is ranked #10 out of 45 hydroelectric power plants in Colorado in terms of total annual net electricity generation.

Marys Lake is comprised of 1 generator and generated 12.0 GWh during the 3-month period between September 2025 to December 2025.

Plant NameMarys Lake
Utility NameU S Bureau of Reclamation
LocationLarimer County, CO
Initial Operation DateMay 1951
Last Update Dec 2025
Annual Generation 36.5 GWh
Annual Consumption 138.6 k MMBtu
Ranked #4,595 out of 13,081 Power Plants Nationwide
Ranked #550 out of 1,311 Water Power Plants Nationwide
Ranked #88 out of 290 Colorado Power Plants
Ranked #10 out of 45 Colorado Water Power Plants
Fuel Types Water

Map of Marys Lake

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Monthly Net Generation for Marys Lake

Monthly Plant Fuel Consumption for Marys Lake

Marys Lake Details

Summary Information
Plant NameMarys Lake (517)
Plant Address, Estes Park, CO 80517
UtilityU S Bureau of Reclamation (2518)
Latitude, Longitude40.34408, -105.53431
Generation Dates on FileJan 2001 to Dec 2025
Initial Operation DateMay 1951
Annual Generation 36.5 GWh
Fuel Types Water
 
Federal Energy Regulatory Commission (FERC) Information
FERC Cogeneration StatusNo
FERC Small Power Producer StatusNo
FERC Exempt Wholesale Generator StatusNo
Regulatory Information
Regulatory StatusRegulated
NERC RegionWECC
Balancing AuthorityWestern Area Power Administration - Rocky Mountain Region (WACM)
NAICS CodeUtilities (22)
Sector Electric Utility (1)
Water SourceColorado River
Ash Impoundment No
Transmission / Distribution OwnerWAPA-- Western Area Power Administration (27000) CO
Grid Voltage 115.00 kV
Energy StorageNo

Generator 1 Details Operating May 1951

TechnologyConventional Hydroelectric
Prime MoverHydroelectric Turbine
OwnershipSingle Owner
Nameplate Capacity8.1 MW
Nameplate Power Factor0.9
Summer Capacity9.3 MW
Winter Capacity9.3 MW
Minimum Load2.4 MW
Uprate/Derate Completed No
StatusOperating
First Operation DateMay 1951
Combined Heat & Power No
Sector NameElectric Utility (1)
Energy SourceWater
Time From Cold Shutdown To Full Load10M

Marys Lake Plant Owners

Owner NameAddressOwnership
We couldn't locate any owners for this plant

Power Plants with Similar Net Generation

Power plants with a similar annual net generation from Water.

RankPlant NamePlant LocationAnnual Generation
#540Fond Du LacDuluth, MN37.6 GWh
#541Moose RiverLyons Falls, NY37.1 GWh
#542FoothillSylmar, CA37.1 GWh
#543Twin Falls (WI)Florence, WI37.0 GWh
#544RollinsColfax, CA36.9 GWh
#545DellsEau Claire, WI36.9 GWh
#546Granite ShoalsMarble Falls, TX36.8 GWh
#547Port Edwards MillPort Edwards, WI36.8 GWh
#548Hydro Kennebec ProjectWinslow, ME36.8 GWh
#549Stewart MountainPhoenix, AZ36.6 GWh
#551Du BayEau Pleine, WI36.5 GWh
#552Ayers IslandBristol, NH36.3 GWh
#553Milford Hydro StationMilford, ME35.9 GWh
#554Bishop Creek 4Bishop, CA35.8 GWh
#555Allegheny No 6 Hydro StationFord City, PA35.6 GWh
#556Gay RobinsonKaumakani, HI35.6 GWh
#557Allegheny No. 5 Hydro StationSchenley, PA35.4 GWh
#558YonahToccoa, GA35.4 GWh
#559MoshierLowville, NY35.1 GWh
#560Grand RapidsIngalls, MI35.1 GWh

Nearby Power Plants

Below are closest 20 power plants surrounding Marys Lake.

Plant NamePlant LocationAnnual GenerationDistance
Big ThompsonLoveland, CO3.3 GWh17.2 mi
Boulder Canyon HydroBoulder, CO8.4 GWh25.8 mi
Boulder City Betasso Hydro PlantBoulder, CO7.5 GWh25.3 mi
Boulder City Lakewood HydroBoulder, CO7.5 GWh25.3 mi
Boulder City Silver Lake HydroBoulder, CO6.2 GWh24.4 mi
Carter HydroBerthoud, CO9.9 GWh17.2 mi
City of Boulder WWTPBoulder, CO1.2 GWh27.7 mi
CO- CSU- Fort CollinsFort Collins, CO1.9 GWh26.6 mi
CO- CSU- Fort Collins IIFort Collins, CO3.0 GWh26.6 mi
Coyote Ridge Community SolarFort Collins, CO3.0 GWh23.8 mi
EstesEstes Park, CO123.4 GWh2.6 mi
FlatironLoveland, CO213.6 GWh15.8 mi
Granby HydroGranby, CO5.3 GWh22.3 mi
IBM SolarBoulder, CO12.5 GWh26.1 mi
Jack's Solar GardenLongmont, CO2.2 GWh26.2 mi
Pivot Solar 34Longmont, CO1.5 GWh26.5 mi
Pole HillLoveland, CO202.4 GWh11.1 mi
SR MavericksMead, CO14.8 GWh27.7 mi
University of ColoradoBoulder, CO4.6 GWh27.1 mi
Valmont Combustion Turbine ProjectBoulder, CO46.4 GWh28.5 mi