What changed in this filing

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Item 2. Properties

2024-02-22 compared with 2023-02-23 · 72 added, 60 removed, 52 unchanged (72% of the section changed)

4 unchanged sentences

Name Location Fuel Number of Generating Units Capacity In MW (1)

Coal-fired plants

Columbia Portage, WI Coal 2 311 (2)

ERGS Oak Creek, WI Coal 2 1,061 (3) (4)

OCPP Oak Creek, WI Coal 4 1,086

Weston Rothschild, WI Coal 2 720 (2)

Total coal-fired plants 10 3,178

Natural gas-fired plants

Concord Watertown, WI Natural Gas/Oil 4 366

De Pere Energy Center De Pere, WI Natural Gas/Oil 1 165

PWGS Port Washington, WI Natural Gas 2 1,217 (3)

Fox Energy Center Wrightstown, WI Natural Gas 3 581

Concord Watertown, WI Natural Gas/Oil 4 365

Paris Union Grove, WI Natural Gas/Oil 4 361

VAPP Milwaukee, WI Natural Gas 2 275

Germantown Germantown, WI Natural Gas/Oil 5 263

Whitewater Whitewater, WI Natural Gas/Oil 1 243

De Pere Energy Center De Pere, WI Natural Gas/Oil 1 166

West Marinette Marinette, WI Natural Gas

Weston Rothschild, WI Natural Gas

Kuester Negaunee, MI Natural Gas 7 128

West Riverside Beloit, WI Natural Gas 2 85 (2)

Pulliam Green Bay, WI Natural Gas

Mihm Baraga, MI Natural Gas 3 55

Paris Union Grove, WI Natural Gas/Oil 4 359

PWGS Port Washington, WI Natural Gas 2 1,228 (4)

Pulliam Green Bay, WI Natural Gas/Oil 1 81

VAPP Milwaukee, WI Natural Gas 2 267

West Marinette Marinette, WI Natural Gas/Oil 3 147

Weston Rothschild, WI Natural Gas/Oil 3 65

Total natural gas-fired plants 45 4,109

Coal-fired plants

OCPP Oak Creek, WI Coal 4 1,103 (7)

ERGS Oak Creek, WI Coal 2 1,082 (2) (3)

Weston Rothschild, WI Coal 2 713 (2) (7)

Columbia Portage, WI Coal 2 312 (2) (7)

Total coal-fired plants 10 3,210

Wind facilities

Glacier Hills Wind Park Cambria, WI Wind 90 162

Blue Sky Green Field Wind Park

Fond du Lac, WI Wind 88 145

Crane Creek Wind Farm

Howard County, IA Wind 66 99

Red Barn Grant County, WI Wind 28 82 (2)

Forward Wind Fond du Lac County, WI Wind 86 62 (2)

Montfort Wind Energy Center Montfort, WI Wind 20 30

Total wind facilities 378 580

Solar facilities

Two Creeks Manitowoc County, WI

Solar 48 100 (2)

Badger Hollow I Iowa County, WI

Solar 41 100 (2)

Badger Hollow II Iowa County, WI

Solar 40 100 (2)

Total solar facilities 129 300

Other renewable facilities

Hydro plants (30 in number) WI and MI Hydro 80 92 (4) (5)

Rothschild Biomass Plant Rothschild, WI Biomass 1 46 (6)

Badger Hollow I WI Solar 41 100 (2)

Two Creeks WI Solar 48 100 (2)

Wind sites (5 in number) WI and IA Wind 350 498 (2)

Total renewables 521 841

Total system 569 7,736

Total other renewable facilities 81 138

Total electric generation facilities 643 8,337

2023 Form 10-K 41

WEC Energy Group, Inc.

(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.

4 unchanged sentences

Capacity for solar generating facilities is based on nameplate capacity, which is the maximum output that a generator should produce at continuous full power.

(2) Certain of these facilities are jointly owned by WPS and various other utilities.

The capacity indicated for each of these units is equal to WPS's portion of total plant capacity based on its percent of ownership.

2022 Form 10-K 38

WEC Energy Group, Inc.

• Wisconsin Power and Light Company, an unaffiliated utility, operates the Columbia units.

WPS holds a 27.5% ownership interest in Columbia.

• WPS operates the Weston 4 facility and holds a 70.0% ownership interest in this facility.

Dairyland Power Cooperative, an unaffiliated energy cooperative, holds the remaining 30.0% interest.

• Badger Hollow I is jointly owned by WPS and Madison Gas and Electric Company, an unaffiliated utility.

WPS holds a 66.7% ownership interest in this facility and Madison Gas and Electric Company owns the remaining 33.3%.

• Two Creeks is jointly owned by WPS and Madison Gas and Electric Company.

WPS holds a 66.7% ownership interest in this facility and Madison Gas and Electric Company owns the remaining 33.3%.

• Forward Wind is jointly owned by WPS along with Wisconsin Power and Light Company and Madison Gas and Electric Company, two unaffiliated utilities.

WPS holds a 44.6% ownership interest in this facility and the unaffiliated utilities collectively own the remaining 55.4%.

(3) This facility is jointly owned by We Power and two other unaffiliated entities.

Our share of capacity is equal to We Power's ownership interest of 83.34%.

(2) Our subsidiaries jointly own these facilities with various other unaffiliated entities.

The capacity indicated for each of these units is equal to our subsidiaries' portion of total plant capacity based on its percent of ownership.

See Note 8, Jointly Owned Utility Facilities, for more information on our ownership interests.

(3) These facilities are part of the Company's non-utility energy infrastructure segment.

Non-Utility Energy Infrastructure Segment below.

(5) Effective January 1, 2023, WE and WPS completed the acquisition of Whitewater, a commercially operational 236.5 MW dual fueled (natural gas and low sulfur fuel oil) combined cycle electrical generation facility in Whitewater, Wisconsin.

See Note 15, Leases, for more information.

The capacity for Whitewater is not included in this table.

(4) All of our hydroelectric facilities follow FERC guidelines and/or regulations.

1 unchanged sentence

WPS holds a 50.0% ownership interest in WRPC and is entitled to 50.0% of the total capacity at Castle Rock and Petenwell.

WPS's share of capacity for Castle Rock and Petenwell is 7.0 MW and 10.3 MW, respectively.

WPS's share of capacity for Castle Rock and Petenwell is 7.0 MWs and 10.3 MWs, respectively.

(6) WE has a biomass power plant that uses wood waste and wood shavings to produce electric power as well as steam to support the paper mill's operations.

1 unchanged sentence

The plant also has the ability to burn natural gas if wood waste and wood shavings are not available.

(7) We expect to retire approximately 1,800 MWs of additional fossil-fueled generation by the end of 2031, which includes the planned retirement in 2024-2025 of OCPP Units 5-8, the planned retirement by June 2026 of jointly-owned Columbia Units 1-2, and the planned retirement in 2031 of Weston Unit 3.

As of December 31, 2023, we operated approximately 35,500 miles of overhead distribution lines and approximately 36,500 miles of underground distribution cable, as well as approximately 430 electric distribution substations and approximately 523,700 line transformers.

10 unchanged sentences

• A 2.0 Bcf LNG plant located in central Illinois,

• A peak-shaving facility that can store the equivalent of approximately 80 MDth in liquefied petroleum gas located in Illinois,

• Peak propane air systems providing approximately 2,960 Dth per day, and

• A 1.0 Bcf LNG plant located in southern Wisconsin,

• A peak-shaving facility that can store the equivalent of approximately 80 MDth in liquefied petroleum gas located in Illinois, and

• LNG storage plants, located in Wisconsin, with a total send-out capability of 173,600 Dth per day.

Our natural gas distribution and gas storage systems included distribution mains and transmission mains connected to the pipeline transmission systems of Alliance Pipeline, ANR Pipeline Company, Centra Pipelines, Consumers Energy, DTE Gas Company, Enbridge Gas Inc., Great Lakes Transmission Company, Guardian Pipeline L.L.C., Interstate Power and Light Company, Kinder Morgan Illinois Pipeline, Midwestern Gas Pipeline Company, Natural Gas Pipeline Company of America, Nicor Gas, Northern Border Pipeline Company, Northern Natural Gas Company, Northwest Gas of Cottonwood County, LLC, Northwestern Energy, Panhandle Gas

2022 Form 10-K 39

WEC Energy Group, Inc.

Transmission, SEMCO, Trunkline Gas Pipeline, Vector Pipeline Company, and Viking Gas Transmission.

Our LNG storage plants convert and store, in liquefied form, natural gas received during periods of low consumption.

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.

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.

Where distribution lines and services and natural gas distribution mains and

2023 Form 10-K 42

WEC Energy Group, Inc.

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

6 unchanged sentences

We Power's share of the ERGS units and both PWGS units are being leased to WE under long-term leases.

Bluewater provides natural gas storage and hub services primarily to WE, WPS, and WG, and also provides these same services to several unaffiliated companies.

WECI has ownership interests in seven wind generating facilities.

For more information on recent and pending wind facility acquisitions, see Note 2, Acquisitions.

The following table summarizes information on WECI's wind generating facilities as of December 31, 2022:

Name Location Number of Generating Units Nameplate Capacity In MW (1)

Wind generating facilities

Bishop Hill III Henry County, Illinois 53 132.1

Upstream Antelope County, Nebraska 81 202.5

Coyote Ridge Brookings County, South Dakota 39 96.7

Bluewater provides natural gas storage and hub services primarily to WE, WPS, and WG.

WECI has ownership interests in eight wind generating facilities and one solar generating facility.

For more information on recent and pending renewable facility acquisitions, see Note 2, Acquisitions.

The following table summarizes information on WECI's renewable generating facilities as of December 31, 2023:

Name Location Ownership Percentage (%) (1)

Number of Generating Units Nameplate Capacity In MW (2)

Renewable generating facilities

Thunderhead Antelope and Wheeler Counties, Nebraska 90 % 108 299.3

Blooming Grove McLean County, Illinois 90 % 94 260.9

Tatanka Ridge Deuel County, South Dakota 56 155.0

McLean County, Illinois

90 % 64 251.0

Lamar, Franklin, Hopkins and Red River Counties, Texas

Upstream Antelope County, Nebraska 90 % 81 202.5

Jayhawk Bourbon and Crawford Counties, Kansas 90 % 70 197.4

Thunderhead Antelope and Wheeler Counties, Nebraska 108 300.0

Total wind generating facilities 501 1,333.7

(1) Nameplate capacity is the amount of energy a turbine should produce at optimal wind speeds.

In February 2023, WECI completed the acquisition of a 90% ownership interest in Sapphire Sky, a commercially operational 250 MW wind generating facility in McLean County, Illinois.

Tatanka Ridge Deuel County, South Dakota 85 % 56 154.8

Bishop Hill III Henry County, Illinois 90 % 53 132.1

Coyote Ridge Brookings County, South Dakota 80 % 39 97.4

Total renewable generating facilities

(1) Invenergy Wind LLC operates these renewable facilities.

(2) Nameplate capacity is the amount of energy a source should produce under optimal conditions, such as optimal wind speeds or solar irradiance.

(3) In January 2024, WECI acquired an additional 10% ownership interest in Samson I.

2023 Form 10-K 43

WEC Energy Group, Inc.

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.

What changed 10-K

Item 2. Properties