9 unchanged sentences
Fox Energy Center Wrightstown, WI Natural Gas 3 579
−Removed: Paris Union Grove, WI Natural Gas/Oil 4 360
Concord Generating Station Watertown, WI Natural Gas/Oil 4 367
+Added: Paris Union Grove, WI Natural Gas/Oil 4 360
VAPP Milwaukee, WI Natural Gas 2 278
25 unchanged sentences
Solar facilities
+Added: Darien Rock and Walworth counties, WI Solar 65 225 (2)
Paris Kenosha County, WI Solar 53 180 (2)
14 unchanged sentences
(1) Capacity for our electric generation facilities, other than wind and solar generating facilities, is based on rated capacity, which is the net power output under average operating conditions with equipment in an average state of repair as of a given month in a given year.
−Removed: Values are primarily based on the net dependable expected capacity ratings for summer 2025 established by tests and may change slightly from year to year.
−Removed: The summer period is the most relevant for capacity planning purposes.
−Removed: This is a result of continually reaching demand peaks in the
2025 Form 10-K 41
WEC Energy Group, Inc.
−Removed: summer months, primarily due to air conditioning demand.
+Added: primarily based on the net dependable expected capacity ratings for summer 2026 established by tests and may change slightly from year to year.
+Added: The summer period is the most relevant for capacity planning purposes.
+Added: This is a result of continually reaching demand peaks in the summer months, primarily due to air conditioning demand.
Capacity for wind generating facilities is based on nameplate capacity, which is the amount of energy a turbine should produce at optimal wind speeds.
12 unchanged sentences
The plant also has the ability to burn natural gas if wood waste and wood shavings are not available.
−Removed: (7) We expect to retire approximately 1,200 MWs of additional coal-fired generation, which includes the planned retirements of OCPP Units 7-8, the jointly-owned Columbia Units 1-2 while investigating conversion of at least one unit to natural gas, and Weston Unit 3.
+Added: (7) We expect to retire approximately 900 MWs of additional coal-fired generation, which includes the planned retirements of OCPP Units 7-8 and Weston Unit 3.
(8) DER facilities are distribution system interconnected solar projects that are typically 5-10 MWs each.
−Removed: (9) See the Corporate Developments section for more information on the Solar Now program.
As of December 31, 2025, we operated approximately 35,200 miles of overhead distribution lines and approximately 37,600 miles of underground distribution cable, as well as approximately 420 electric distribution substations and approximately 649,500 line transformers.
+Added: Battery Energy Storage Systems
+Added: We also own 99 MWs of BESS at Paris located in Kenosha County, WI which was completed in June 2025.
Natural Gas Facilities
14 unchanged sentences
Our LNG storage plants convert and store, in liquefied form, natural gas received during periods of low consumption.
−Removed: We also own office buildings, natural gas regulating and metering stations, and major service centers, including garage and warehouse facilities, in certain communities we serve.
−Removed: Where distribution lines and services and natural gas distribution mains and services occupy private property, we have in some, but not all instances, obtained consents, permits, or easements for these
2025 Form 10-K 42
WEC Energy Group, Inc.
−Removed: installations from the apparent owners or those in possession of those properties, generally without an examination of ownership records or title.
+Added: We also own office buildings, natural gas regulating and metering stations, and major service centers, including garage and warehouse facilities, in certain communities we serve.
+Added: Where distribution lines and services and natural gas distribution mains and services occupy private property, we have in some, but not all instances, obtained consents, permits, or easements for these installations from the apparent owners or those in possession of those properties, generally without an examination of ownership records or title.
Steam Facilities
4 unchanged sentences
We Power and Bluewater are considered non-utility energy infrastructure operations, however, their facilities are shown in the regulated section.
−Removed: We Power owns and leases generating facilities to WE.
−Removed: We Power's share of the ERGS units and both PWGS units are being leased to WE under long-term leases.
+Added: We Power owns and leases its share of the ERGS units and both PWGS units to WE under long-term leases.
Bluewater provides natural gas storage and hub services primarily to WE, WPS, and WG.
11 unchanged sentences
90.0 % 64 259.8
+Added: Hardin III Hardin County, Ohio 90.0 % 350 250.0
Maple Flats Clay County, Illinois 90.0 % 343 250.0
10 unchanged sentences
(2) Nameplate capacity is the amount of energy a source should produce under optimal conditions, such as optimal wind speeds or solar irradiance.
−Removed: In February 2025, WECI completed the acquisition of a 90% ownership interest in Hardin III, a 250 MW wind generating facility in Hardin County, Ohio.
2025 Form 10-K 43
1 unchanged sentence
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.