Marys Lake
n/a, Estes Park, CO 80517Plant 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 Name | Marys Lake |
|---|---|
| Utility Name | U S Bureau of Reclamation |
| Location | Larimer County, CO |
| Initial Operation Date | May 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 |
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Monthly Net Generation for Marys Lake
Monthly Plant Fuel Consumption for Marys Lake
Marys Lake Details
| Summary Information | |
|---|---|
| Plant Name | Marys Lake (517) |
| Plant Address | , Estes Park, CO 80517 |
| Utility | U S Bureau of Reclamation (2518) |
| Latitude, Longitude | 40.34408, -105.53431 |
| Generation Dates on File | Jan 2001 to Dec 2025 |
| Initial Operation Date | May 1951 |
| Annual Generation | 36.5 GWh |
| Fuel Types | Water |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | WECC |
| Balancing Authority | Western Area Power Administration - Rocky Mountain Region (WACM) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Colorado River |
| Ash Impoundment | No |
| Transmission / Distribution Owner | WAPA-- Western Area Power Administration (27000) CO |
| Grid Voltage | 115.00 kV |
| Energy Storage | No |
Generator 1 Details Operating May 1951
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 8.1 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 9.3 MW |
| Winter Capacity | 9.3 MW |
| Minimum Load | 2.4 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | May 1951 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 10M |
Marys Lake Plant Owners
| Owner Name | Address | Ownership | 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.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #540 | Fond Du Lac | Duluth, MN | 37.6 GWh |
| #541 | Moose River | Lyons Falls, NY | 37.1 GWh |
| #542 | Foothill | Sylmar, CA | 37.1 GWh |
| #543 | Twin Falls (WI) | Florence, WI | 37.0 GWh |
| #544 | Rollins | Colfax, CA | 36.9 GWh |
| #545 | Dells | Eau Claire, WI | 36.9 GWh |
| #546 | Granite Shoals | Marble Falls, TX | 36.8 GWh |
| #547 | Port Edwards Mill | Port Edwards, WI | 36.8 GWh |
| #548 | Hydro Kennebec Project | Winslow, ME | 36.8 GWh |
| #549 | Stewart Mountain | Phoenix, AZ | 36.6 GWh |
| #551 | Du Bay | Eau Pleine, WI | 36.5 GWh |
| #552 | Ayers Island | Bristol, NH | 36.3 GWh |
| #553 | Milford Hydro Station | Milford, ME | 35.9 GWh |
| #554 | Bishop Creek 4 | Bishop, CA | 35.8 GWh |
| #555 | Allegheny No 6 Hydro Station | Ford City, PA | 35.6 GWh |
| #556 | Gay Robinson | Kaumakani, HI | 35.6 GWh |
| #557 | Allegheny No. 5 Hydro Station | Schenley, PA | 35.4 GWh |
| #558 | Yonah | Toccoa, GA | 35.4 GWh |
| #559 | Moshier | Lowville, NY | 35.1 GWh |
| #560 | Grand Rapids | Ingalls, MI | 35.1 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Marys Lake.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Big Thompson | Loveland, CO | 3.3 GWh | 17.2 mi |
| Boulder Canyon Hydro | Boulder, CO | 8.4 GWh | 25.8 mi |
| Boulder City Betasso Hydro Plant | Boulder, CO | 7.5 GWh | 25.3 mi |
| Boulder City Lakewood Hydro | Boulder, CO | 7.5 GWh | 25.3 mi |
| Boulder City Silver Lake Hydro | Boulder, CO | 6.2 GWh | 24.4 mi |
| Carter Hydro | Berthoud, CO | 9.9 GWh | 17.2 mi |
| City of Boulder WWTP | Boulder, CO | 1.2 GWh | 27.7 mi |
| CO- CSU- Fort Collins | Fort Collins, CO | 1.9 GWh | 26.6 mi |
| CO- CSU- Fort Collins II | Fort Collins, CO | 3.0 GWh | 26.6 mi |
| Coyote Ridge Community Solar | Fort Collins, CO | 3.0 GWh | 23.8 mi |
| Estes | Estes Park, CO | 123.4 GWh | 2.6 mi |
| Flatiron | Loveland, CO | 213.6 GWh | 15.8 mi |
| Granby Hydro | Granby, CO | 5.3 GWh | 22.3 mi |
| IBM Solar | Boulder, CO | 12.5 GWh | 26.1 mi |
| Jack's Solar Garden | Longmont, CO | 2.2 GWh | 26.2 mi |
| Pivot Solar 34 | Longmont, CO | 1.5 GWh | 26.5 mi |
| Pole Hill | Loveland, CO | 202.4 GWh | 11.1 mi |
| SR Mavericks | Mead, CO | 14.8 GWh | 27.7 mi |
| University of Colorado | Boulder, CO | 4.6 GWh | 27.1 mi |
| Valmont Combustion Turbine Project | Boulder, CO | 46.4 GWh | 28.5 mi |