Caldron Falls

W12528 Boat Landing 8 Rd, Town of Stephenson, WI 54114

Plant Summary Information

Caldron Falls is ranked #42 out of 66 hydroelectric power plants in Wisconsin in terms of total annual net electricity generation.

Caldron Falls is comprised of 2 generators and generated 829.0 MWh during the 3-month period between September 2025 to December 2025.

Plant Name	Caldron Falls
Utility Name	Wisconsin Public Service Corp
Location	Marinette County, WI
Initial Operation Date	November 1924
Last Update	Dec 2025
Annual Generation	10.9 GWh
Annual Consumption	40.2 k MMBtu
Ranked #6,090 out of 13,081 Power Plants Nationwide
Ranked #880 out of 1,311 Water Power Plants Nationwide
Ranked #132 out of 260 Wisconsin Power Plants
Ranked #42 out of 66 Wisconsin Water Power Plants
Fuel Types	Water

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Summary Information
Plant Name	Caldron Falls (4061)
Plant Address	W12528 Boat Landing 8 Rd, Town of Stephenson, WI 54114
Utility	Wisconsin Public Service Corp (20860)
Latitude, Longitude	45.3569, -88.2306
Generation Dates on File	Jan 2001 to Dec 2025
Initial Operation Date	November 1924
Annual Generation	10.9 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	RFC
Balancing Authority	Midcontinent Independent Transmission System Operator, Inc.. (MISO)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	Peshtigo River
Ash Impoundment	No
Transmission / Distribution Owner	American Transmission Co (659) WI
Grid Voltage	69.00 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	WPS.WPSM
RTO ISO Location Designation For Reporting Wholesale Sales Data	WPS.WPSM
Nameplate Capacity	3.2 MW
Nameplate Power Factor	0.85
Summer Capacity	3.2 MW
Winter Capacity	3.2 MW
Minimum Load	0.3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	November 1924
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	WPS.WPSM
RTO ISO Location Designation For Reporting Wholesale Sales Data	WPS.WPSM
Nameplate Capacity	3.2 MW
Nameplate Power Factor	0.85
Summer Capacity	3.2 MW
Winter Capacity	3.2 MW
Minimum Load	0.3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	November 1924
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	10M
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.

Rank	Plant Name	Plant Location	Annual Generation
#870	Raymondville	Norfolk, NY	11.3 GWh
#871	Indian Valley Dam Hydro Project	Clearlake Oaks, CA	11.2 GWh
#872	Unionville Hydro Project 2499 NY	Norwood, NY	11.2 GWh
#873	Ashokan	Kingston, NY	11.1 GWh
#874	Penacook Upper Falls Hydro	Penacook, NH	11.1 GWh
#875	Pine	Florence, WI	11.1 GWh
#876	Dillon Hydro Plant	Summit, CO	11.1 GWh
#877	Dolgeville Hydro	Dolgeville, NY	11.0 GWh
#878	Haiwee	Olancha, CA	11.0 GWh
#879	Nacoochee	Lakemont, GA	10.9 GWh
#881	Elkhart	Elkhart, IN	10.8 GWh
#882	Shavano Falls Hydro	Montrose, CO	10.8 GWh
#883	Tomahawk	Tomahawk, WI	10.7 GWh
#884	Bidwell Ditch Project	Hat Creek, CA	10.7 GWh
#885	Johnson Falls	Town of Stephenson, WI	10.7 GWh
#886	Bishop Creek 5	Bishop, CA	10.7 GWh
#887	Weeks Falls	North Bend, WA	10.7 GWh
#888	Glen Ferris Hydro	Gauley Bridge, WV	10.6 GWh
#889	Putts Bridge	Ludlow, MA	10.6 GWh
#890	Whiskeytown	Whiskeytown, CA	10.5 GWh

Below are closest 20 power plants surrounding Caldron Falls.

Plant Name	Plant Location	Annual Generation	Distance
Big Quinnesec 61	Iron Mountain, MI	1.7 GWh	31.2 mi
Big Quinnesec 92	Iron Mountain, MI	100.0 GWh	31.2 mi
Billerud Quinnesec Mill	Norway, MI	318.3 GWh	33.1 mi
Chalk Hill	Stephenson, MI	34.0 GWh	23.5 mi
Grand Rapids	Ingalls, MI	35.1 GWh	28.2 mi
High Falls (WI)	Town of Stephenson, WI	15.6 GWh	5.6 mi
Johnson Falls	Town of Stephenson, WI	10.7 GWh	5.9 mi
Kingsford	Kingsford, MI	25.7 GWh	31.6 mi
Little Quinnesec Falls Hydro Project	Niagara, WI	60.8 GWh	31.1 mi
Menominee Mill Marinette	Menominee, MI	9.6 GWh	33.6 mi
Norway (MI)	Norway, MI	29.5 GWh	32 mi
Oconto Falls Upper	Oconto Falls, WI	12.0 GWh	33.4 mi
Park Mill	Marinette, WI	4.2 GWh	33.1 mi
Pine	Florence, WI	11.1 GWh	32.5 mi
Potato Rapids	Town of Porterfield, WI	4.2 GWh	28.5 mi
Sandstone Rapids	Town of Stephenson, WI	9.7 GWh	11.6 mi
Stiles	Oconto Falls, WI	5.3 GWh	33.5 mi
West Marinette	Peshtigo, WI	90.3 GWh	32.3 mi
West Marinette 34	Peshtigo, WI	84.9 GWh	32.3 mi
White Rapids	Stephenson, MI	32.7 GWh	22.5 mi