Wausau

531 S First Av, Wausau, WI 54401

Plant Summary Information

Wausau is ranked #27 out of 66 hydroelectric power plants in Wisconsin in terms of total annual net electricity generation.

Wausau is comprised of 3 generators and generated 4.9 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	Wausau
Utility Name	Wisconsin Public Service Corp
Location	Marathon County, WI
Initial Operation Date	March 1921
Last Update	Dec 2025
Annual Generation	24.5 GWh
Annual Consumption	89.6 k MMBtu
Ranked #5,113 out of 13,081 Power Plants Nationwide
Ranked #650 out of 1,311 Water Power Plants Nationwide
Ranked #100 out of 260 Wisconsin Power Plants
Ranked #27 out of 66 Wisconsin Water Power Plants
Fuel Types	Water

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Summary Information
Plant Name	Wausau (4077)
Plant Address	531 S First Av, Wausau, WI 54401
Utility	Wisconsin Public Service Corp (20860)
Latitude, Longitude	44.9575, -89.6367
Generation Dates on File	Jan 2001 to Dec 2025
Initial Operation Date	March 1921
Annual Generation	24.5 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	RFC
Balancing Authority	Midcontinent Independent Transmission System Operator, Inc.. (MISO)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	Wisconsin River
Ash Impoundment	No
Transmission / Distribution Owner	Wisconsin Public Service Corp (20860) WI
Grid Voltage	46.00 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	1.8 MW
Nameplate Power Factor	0.8
Summer Capacity	1.8 MW
Winter Capacity	1.8 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 1921
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	1.8 MW
Nameplate Power Factor	0.8
Summer Capacity	1.8 MW
Winter Capacity	1.8 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	May 1921
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	1.8 MW
Nameplate Power Factor	0.8
Summer Capacity	1.8 MW
Winter Capacity	1.8 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 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
#640	Alcona	Glennie, MI	25.5 GWh
#641	Chili Bar	Placerville, CA	25.2 GWh
#642	Peterson	Milton, VT	25.1 GWh
#643	High Falls - Croghan NY	Croghan, NY	25.0 GWh
#644	White River Lock and Dam 3	Marcella, AR	24.9 GWh
#645	Pyrites Plant	Pyrites, NY	24.9 GWh
#646	S E Hazelton A	Hazelton, ID	24.9 GWh
#647	Garvins Falls	Bow, NH	24.8 GWh
#648	Georgia-Pacific Corp - Nekoosa Mill	Nekoosa, WI	159.9 GWh
#649	Big Fork	Big Fork, MT	24.6 GWh
#651	Cooke	Oscoda, MI	24.3 GWh
#652	International Paper Livermore Hydro	Livermore Falls, ME	24.2 GWh
#653	Felt	Felt, ID	24.2 GWh
#654	Tieton Dam Hydro Electric Project	Rimrock, WA	24.2 GWh
#655	A G Wishon	North Fork, CA	24.1 GWh
#656	Nottely	Blairsville, GA	24.0 GWh
#657	Bishop Creek 3	Bishop, CA	23.9 GWh
#658	Marble Falls	Marble Falls, TX	23.8 GWh
#659	Blue Ridge	Blue Ridge, GA	23.6 GWh
#660	Shawmut	Shawmut, ME	23.4 GWh

Below are closest 20 power plants surrounding Wausau.

Plant Name	Plant Location	Annual Generation	Distance
Alexander	Merrill, WI	13.9 GWh	16.9 mi
Antigo Solar Partners, LLC	Antigo, WI	9.0 GWh	26.5 mi
Antigo-Forrest Street Solar Project	Antigo, WI	9.0 GWh	25.3 mi
Biron	Biron, WI	29.6 GWh	37.1 mi
Biron Mill	Wisconsin Rapids, WI	95.7 GWh	37.1 mi
Domtar Paper Company Rothschild	Rothschild, WI	524.0 MWh	4.9 mi
Du Bay	Eau Pleine, WI	36.5 GWh	20.2 mi
Fiber Recovery, Inc.	Ringle, WI	6.5 GWh	13.2 mi
Grandfather Falls	Irma, WI	79.1 GWh	25 mi
Marshfield Utilities Gas Plant	Marshfield, WI	18.8 GWh	33.1 mi
Medford DPC Solar	Medford, WI	2.8 GWh	38.6 mi
Merrill	Merrill, WI	3.7 GWh	15.5 mi
Mosinee Mill	Mosinee, WI	101.2 GWh	12 mi
Packaging of America Tomahawk Mill	Tomahawk, WI	113.1 GWh	33.9 mi
Rothschild Biomass Cogen Facility	Rothschild, WI	165.6 GWh	4.8 mi
Stevens Point	Stevens Point, WI	25.9 GWh	30.7 mi
Tomahawk	Tomahawk, WI	10.7 GWh	33.7 mi
Weston	Rothschild, WI	4.1 TWh	6.8 mi
Weston RICE	Kronenwetter, WI	144.5 GWh	7 mi
Whiting	Whiting, WI	16.1 GWh	32.5 mi