O'Brien Solar Fields

2652 S Seminole HWY, Fitchburg, WI 53593

Plant Summary Information

O'Brien Solar Fields is ranked #20 out of 113 solar farms in Wisconsin in terms of total annual net electricity generation.

O'Brien Solar Fields generated 4.7 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	O'Brien Solar Fields
Utility Name	Madison Gas & Electric Co
Location	Dane County, WI
Initial Operation Date	May 2021
Last Update	Dec 2025
Annual Generation	37.4 GWh
Annual Consumption	131.8 k MMBtu
Ranked #4,631 out of 13,301 Power Plants Nationwide
Ranked #1,315 out of 7,209 Solar Power Plants Nationwide
Ranked #85 out of 261 Wisconsin Power Plants
Ranked #20 out of 113 Wisconsin Solar Power Plants
Fuel Types	Solar

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Summary Information
Plant Name	O'Brien Solar Fields (64590)
Plant Address	2652 S Seminole HWY, Fitchburg, WI 53593
Utility	Madison Gas & Electric Co (11479)
Latitude, Longitude	42.99767, -89.45895
Generation Dates on File	May 2021 to Dec 2025
Initial Operation Date	May 2021
Annual Generation	37.4 GWh
Fuel Types	Solar

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
Ash Impoundment	No
Transmission / Distribution Owner	Madison Gas & Electric Co (11479) WI
Grid Voltage	13.80 kV / 13.80 kV / 13.80 kV
Energy Storage	No

* Data obtained from the 2025 EIA 860 Report

Technology	Solar Photovoltaic
Prime Mover	Photovoltaic
Ownership	Single Owner
RTO ISO LMP Node Designation	MGE.OBRIEN_N
RTO ISO Location Designation For Reporting Wholesale Sales Data	MGE.OBRIEN_N
Nameplate Capacity	8.3 MW
Summer Capacity	8.3 MW
Winter Capacity	8.3 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	May 2021
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Solar
Carbon Capture Technology	No
Other Planned Modifications	No
Multiple Fuels	No

Solar Details
Single Axis Tracking	Yes
Azimuth Angle	180
DC Net Capacity	9.1 MW
Crystalline Silicon	Yes
Net Metering Agreement	No
Virtual Net Metering Agreement	No

Technology	Solar Photovoltaic
Prime Mover	Photovoltaic
Ownership	Single Owner
RTO ISO LMP Node Designation	MGE.OBRIEN_S
RTO ISO Location Designation For Reporting Wholesale Sales Data	MGE.OBRIEN_S
Nameplate Capacity	8.3 MW
Summer Capacity	8.3 MW
Winter Capacity	8.3 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	May 2021
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Solar
Carbon Capture Technology	No
Other Planned Modifications	No
Multiple Fuels	No

Solar Details
Single Axis Tracking	Yes
Azimuth Angle	180
DC Net Capacity	9 MW
Crystalline Silicon	Yes
Net Metering Agreement	No
Virtual Net Metering Agreement	No

Technology	Solar Photovoltaic
Prime Mover	Photovoltaic
Ownership	Single Owner
RTO ISO LMP Node Designation	MGE.OBRIEN_W
RTO ISO Location Designation For Reporting Wholesale Sales Data	MGE.OBRIEN_W
Nameplate Capacity	5.5 MW
Summer Capacity	5.5 MW
Winter Capacity	5.5 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	May 2021
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Solar
Carbon Capture Technology	No
Other Planned Modifications	No
Multiple Fuels	No

Solar Details
Single Axis Tracking	Yes
Azimuth Angle	180
DC Net Capacity	6.1 MW
Crystalline Silicon	Yes
Net Metering Agreement	No
Virtual Net Metering Agreement	No

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

Power plants with a similar annual net generation from Solar.

Rank	Plant Name	Plant Location	Annual Generation
#1305	CoTAL Solar Farm	Tallahassee, FL	38.0 GWh
#1306	Johnson Corner Solar 1	Johnson City, KS	38.0 GWh
#1307	Stillwater Facility	Fallon, NV	90.6 GWh
#1308	Cottontail Solar 6	Penn Township, PA	37.9 GWh
#1309	Caden Energix Wytheville LLC	Wytheville, VA	37.9 GWh
#1310	Macbeth Solar	Montague, MI	37.6 GWh
#1311	Midcontinent Solar, LLC	Owosso, MI	37.6 GWh
#1312	RE Old River One, LLC	Bakersfield, CA	37.5 GWh
#1313	Long Island Solar Farm LLC	Upton, NY	37.5 GWh
#1314	NY8 - Teichos Pattersonville	Pattersonville, NY	37.5 GWh
#1316	Blue Elk IV Solar, LLC	Adrian, MI	37.4 GWh
#1317	Montross Solar	Montross, VA	37.4 GWh
#1318	Sunray 3	Daggett, CA	37.2 GWh
#1319	Richland Solar Center	Jeffersonville, GA	37.1 GWh
#1320	Blackville Solar II	Blackville, SC	37.0 GWh
#1321	Blue Elk III Solar, LLC	Eaton Rapids, MI	36.9 GWh
#1322	St. Joseph Solar	Granger, IN	36.9 GWh
#1323	Beaverdam Renewable Energy Center	Grey Court, SC	36.7 GWh
#1324	Demille Solar Farm	Lapeer, MI	36.5 GWh
#1325	EDF Ph1 Toms River	Tom's River, NJ	36.5 GWh

Below are closest 20 power plants surrounding O'Brien Solar Fields.

Plant Name	Plant Location	Annual Generation	Distance
Albany Solar (WI)	Broadhead, WI	98.7 GWh	23.3 mi
Blount Street	Madison, WI	58.6 GWh	7.1 mi
Dane County Airport Solar	Madison, WI	17.4 GWh	13 mi
Dane County Solar LLC	Cottage Grove, WI	33.7 GWh	11.6 mi
Diesel Generators	Madison, WI	1.4 GWh	7.1 mi
Epic Verona	Verona, WI	1.8 GWh	5.5 mi
Galactic Wind	Waunakee, WI	21.2 GWh	9.6 mi
Hermsdorf Solar	Madison, WI	16.4 GWh	10.9 mi
Middleton Airport Solar	Middleton, WI	7.4 GWh	9 mi
Middleton Biogas Solar, LLC	Middleton, WI	1.9 GWh	9.7 mi
Nine Springs	Madison, WI	89.0 MWh	5.8 mi
North Rock	Edgerton, WI	92.7 GWh	22.2 mi
Prairie Du Sac	Prairie du Sac, WI	152.9 GWh	25.5 mi
Rock LakeSolar WI, LLC	Waterloo, WI	318.0 MWh	25.7 mi
RockGen Energy Center	Cambridge, WI	597.7 GWh	20.8 mi
Strix Solar	Fitchburg, WI	9.3 GWh	3.7 mi
Sycamore (WI)	Madison, WI	28.0 MWh	10.9 mi
Tyto Solar	Fitchburg, WI	11.3 GWh	4.1 mi
UW Kegonsa Customer Hosted Solar	Stoughton, WI	1.6 GWh	8.9 mi
West Campus Cogeneration Facility	Madison, WI	305.2 GWh	5.6 mi