Thomson

180 St Highway 10, Carlton, MN 55718

Plant Summary Information

Thomson is ranked #43 out of 781 power plants in Minnesota in terms of total annual net electricity generation.

Thomson is comprised of 6 generators and generated 20.0 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	Thomson
Utility Name	ALLETE, Inc.
Location	Carlton County, MN
Initial Operation Date	January 1907
Last Update	Dec 2025
Annual Generation	198.2 GWh
Annual Consumption	712.5 k MMBtu
Ranked #2,544 out of 13,081 Power Plants Nationwide
Ranked #206 out of 1,311 Water Power Plants Nationwide
Ranked #43 out of 781 Minnesota Power Plants
Ranked #1 out of 26 Minnesota Water Power Plants
Fuel Types	Water
Previous Operator	Minnesota Power Inc (2013 to 2013) ALLETE, Inc. (2014 to 2025)

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Summary Information
Plant Name	Thomson (1901)
Plant Address	180 St Highway 10, Carlton, MN 55718
Utility	ALLETE, Inc. (12647)
Latitude, Longitude	46.655, -92.3333
Generation Dates on File	Jan 2001 to Dec 2025
Initial Operation Date	January 1907
Annual Generation	198.2 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	MRO
Balancing Authority	Midcontinent Independent Transmission System Operator, Inc.. (MISO)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	St Louis River
Ash Impoundment
Transmission / Distribution Owner	ALLETE, Inc. (12647) MN
Grid Voltage	115.00 kV
Energy Storage	No

* Data obtained from the 2025 EIA 860 Report

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	MP.THOMSON
RTO ISO Location Designation For Reporting Wholesale Sales Data	MP.THOMSON
Nameplate Capacity	13 MW
Nameplate Power Factor	0.8
Summer Capacity	12.5 MW
Winter Capacity	12.5 MW
Minimum Load	0.5 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	January 1907
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Other Planned Modifications	No
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	13 MW
Nameplate Power Factor	0.8
Summer Capacity	12.5 MW
Winter Capacity	12.5 MW
Minimum Load	0.5 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	January 1907
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Other Planned Modifications	No
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	13 MW
Nameplate Power Factor	0.8
Summer Capacity	12.5 MW
Winter Capacity	12.5 MW
Minimum Load	0.5 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	January 1907
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Other Planned Modifications	No
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	10.8 MW
Nameplate Power Factor	0.8
Summer Capacity	12.1 MW
Winter Capacity	12.1 MW
Minimum Load	0.5 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	January 1914
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Other Planned Modifications	No
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	10.8 MW
Nameplate Power Factor	0.8
Summer Capacity	11.9 MW
Winter Capacity	11.9 MW
Minimum Load	0.5 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	January 1919
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Other Planned Modifications	No
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	12 MW
Nameplate Power Factor	0.8
Summer Capacity	14.7 MW
Winter Capacity	14.7 MW
Minimum Load	0.5 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	January 1949
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Other Planned Modifications	No
Multiple Fuels	No

Owner Name	Address	Generator	Ownership
*We couldn't locate any owners for this plant*

Power plants with a similar annual net generation from Water.

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#198	Red Rock Hydro Plant	Pella, IA	213.0 GWh
#199	W E Warne	Gorman, CA	211.0 GWh
#200	Toketee Falls	Idleyld Park, OR	208.4 GWh
#201	Sam Rayburn Dam	Jasper, TX	207.9 GWh
#202	American Falls	American Falls, ID	206.3 GWh
#203	Pole Hill	Loveland, CO	202.4 GWh
#204	Stanislaus	Vallecito, CA	199.8 GWh
#205	Willow Island Hydroelectric Plant	Willow Island, WV	198.3 GWh
#207	Blue Mesa	Gunnison, CO	198.0 GWh
#208	Lower Salmon	Hagerman, ID	196.7 GWh
#209	Cowlitz Falls	Randle, WA	195.6 GWh
#210	New Martinsville Hannibal Hydro	New Martinsville, WV	194.6 GWh
#211	Bellows Falls	Bellow Falls, VT	194.3 GWh
#212	Claytor	Radford, VA	194.0 GWh
#213	Bucks Creek	Storrie, CA	192.0 GWh
#214	Denison	Denison, TX	191.9 GWh
#215	Cheatham	Ashland City, TN	191.4 GWh
#216	Thurlow Dam	Tallassee, AL	191.0 GWh

Below are closest 20 power plants surrounding Thomson.

Plant Name	Plant Location	Annual Generation	Distance
Clam River Dam	Danbury, WI	4.8 GWh	49.9 mi
Danbury Dam	Danbury, WI	2.3 GWh	45.3 mi
Fond Du Lac	Duluth, MN	37.6 GWh	2 mi
Grand Casino Hinckley Solar	Hinckley, MN	5.5 GWh	52.5 mi
Grantsburg Diesel	Grantsburg, WI	26.5 MWh	62.7 mi
Hibbing	Hibbing, MN	39.8 GWh	60.5 mi
Jean Duluth Solar	Duluth, MN	2.1 GWh	20.1 mi
Knife Falls	Cloquet, MN	8.9 GWh	7.4 mi
Laskin Solar	Hoyt Lakes, MN	8.2 GWh	60.4 mi
M L Hibbard	Duluth, MN	97.7 GWh	10.2 mi
Moose Lake	Moose Lake, MN	128.0 MWh	24.6 mi
MP CSG 1 LLC	Wrenshall, MN	1.6 GWh	3.6 mi
Rock Lake CT	Pine City, MN	449.0 MWh	66.2 mi
Sappi Cloquet Mill	Cloquet, MN	460.5 GWh	6.6 mi
Scanlon	Scanlon, MN	6.5 GWh	5.6 mi
Spooner Solar Array	Spooner, WI	3.6 GWh	55.6 mi
Syl Laskin	Hoyt Lakes, MN	196.3 GWh	61 mi
Taconite Ridge 1 Wind Energy Center	Mountain Iron, MN	53.1 GWh	64.7 mi
Trego	Hayward, WI	5.1 GWh	53.3 mi
Viola	Webster, WI	65.0 MWh	57.4 mi