Merrill

306 S Park St, Merrill, WI 54452

Plant Summary Information

Merrill is ranked #60 out of 66 hydroelectric power plants in Wisconsin in terms of total annual net electricity generation.

Merrill is comprised of 3 generators and generated 1.6 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	Merrill
Utility Name	Wisconsin Public Service Corp
Location	Lincoln County, WI
Initial Operation Date	March 1917
Last Update	Dec 2025
Annual Generation	3.7 GWh
Annual Consumption	13.4 k MMBtu
Ranked #9,197 out of 13,081 Power Plants Nationwide
Ranked #1,155 out of 1,311 Water Power Plants Nationwide
Ranked #185 out of 260 Wisconsin Power Plants
Ranked #60 out of 66 Wisconsin Water Power Plants
Fuel Types	Water

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Summary Information
Plant Name	Merrill (4068)
Plant Address	306 S Park St, Merrill, WI 54452
Utility	Wisconsin Public Service Corp (20860)
Latitude, Longitude	45.1786, -89.685
Generation Dates on File	Jan 2001 to Dec 2025
Initial Operation Date	March 1917
Annual Generation	3.7 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	24.90 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	0.4 MW
Nameplate Power Factor	0.8
Summer Capacity	0.4 MW
Winter Capacity	0.4 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 1917
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	0.4 MW
Nameplate Power Factor	0.8
Summer Capacity	0.4 MW
Winter Capacity	0.4 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 1917
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	1.5 MW
Nameplate Power Factor	0.8
Summer Capacity	1.5 MW
Winter Capacity	1.5 MW
Minimum Load	0.3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	June 1984
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
#1145	Messalonskee 3	Oakland, ME	3.8 GWh
#1146	Newfound Hydroelectric	Bristol, NH	3.8 GWh
#1147	Snake Creek	Midway, UT	3.8 GWh
#1148	Fargo Drop	Wilder, ID	3.8 GWh
#1149	Lower No 2	Idaho Falls, ID	3.8 GWh
#1150	King Mill	Augusta, GA	3.7 GWh
#1151	Combie South	Auburn, CA	3.7 GWh
#1152	Dunlap TP 1	New Brannfels, TX	3.7 GWh
#1153	Blind Canyon Hydro	Wendell, ID	3.7 GWh
#1154	Clifton Dam 3 Power Station	Converse, SC	3.7 GWh
#1156	Volta 2	Manton, CA	3.6 GWh
#1157	Hickman	Hickman, CA	3.6 GWh
#1158	Stevens Mills Dam	Franklin, NH	3.6 GWh
#1159	Hoot Lake	Fergus Falls, MN	3.6 GWh
#1160	Haw River Hydro	Saxapahaw, NC	3.5 GWh
#1161	Marsh Valley Development	McCammon, ID	3.5 GWh
#1162	Messalonskee 5	Waterville, ME	3.5 GWh
#1163	Last Chance	Grace, ID	3.5 GWh
#1164	Indian Orchard	Indian Orchard, MA	3.5 GWh
#1165	Lower Village Water Power Project	Claremont, NH	3.5 GWh

Below are closest 20 power plants surrounding Merrill.

Plant Name	Plant Location	Annual Generation	Distance
Alexander	Merrill, WI	13.9 GWh	3.5 mi
Antigo Solar Partners, LLC	Antigo, WI	9.0 GWh	25.2 mi
Antigo-Forrest Street Solar Project	Antigo, WI	9.0 GWh	25.1 mi
Domtar Paper Company Rothschild	Rothschild, WI	524.0 MWh	20.4 mi
Du Bay	Eau Pleine, WI	36.5 GWh	35.5 mi
Fiber Recovery, Inc.	Ringle, WI	6.5 GWh	24.9 mi
Grandfather Falls	Irma, WI	79.1 GWh	10 mi
Hat Rapids	Rhinelander, WI	6.6 GWh	28.9 mi
Hodag Solar	Rhinelander, WI	13.2 GWh	32.2 mi
Medford DPC Solar	Medford, WI	2.8 GWh	33.5 mi
Mosinee Mill	Mosinee, WI	101.2 GWh	27 mi
Ogema	Ogema, WI	2.5 GWh	36.4 mi
Packaging of America Tomahawk Mill	Tomahawk, WI	113.1 GWh	18.4 mi
Popple Creek (Clark 1)	Colby, WI	3.7 GWh	41.8 mi
Rhinelander Mill	Rhinelander, WI	7.3 GWh	34.3 mi
Rothschild Biomass Cogen Facility	Rothschild, WI	165.6 GWh	20.3 mi
Tomahawk	Tomahawk, WI	10.7 GWh	18.3 mi
Wausau	Wausau, WI	24.5 GWh	15.5 mi
Weston	Rothschild, WI	4.1 TWh	22 mi
Weston RICE	Kronenwetter, WI	144.5 GWh	22.3 mi