XML 57 R17.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Jointly Owned Utility Facilities | 12 Months Ended
--- | ---
Dec. 31, 2019
Jointly Owned Utility Plant, Net Ownership Amount [Abstract] |
JOINTLY OWNED UTILITY FACILITIES | JOINTLY OWNED UTILITY FACILITIES We Power and WPS hold joint ownership interests in certain electric generating facilities. They are entitled to their share of generating capability and output of each facility equal to their respective ownership interest. They pay their ownership share of additional construction costs and have supplied their own financing for all jointly owned projects. We record We Power's and WPS's proportionate share of significant jointly owned electric generating facilities as property, plant, and equipment on the balance sheets. We Power leases its ownership interest in ER 1 and ER 2 to WE, and WE operates these units. WE and WPS record their respective share of fuel inventory purchases and operating expenses, unless specific agreements have been executed to limit their maximum exposure to additional costs. WE's and WPS's proportionate share of direct expenses for the joint operation of these plants is recorded in operating expenses in the income statements. Information related to jointly owned utility facilities at December 31, 2019 was as follows:
|  | We Power |  | WPS
(in millions, except for percentages and MW) |  | Elm Road Generating Station Units 1 and 2 |  | Weston Unit 4 |  | Columbia Energy Center Units 1 and 2 (2) |  | Forward Wind Energy Center
Ownership |  | 83.34 | % |  | 70.0 | % |  | 27.6 | % |  | 44.6 | %
Share of rated capacity (MW) (1) |  | 1,054.3 |  |  | 386.0 |  |  | 313.9 |  |  | 8.4 |
In-service date |  | 2010 and 2011 |  |  | 2008 |  |  | 1975 and 1978 |  |  | 2008 |
Property, plant, and equipment |  | $ | 2,447.9 |  |  | $ | 663.2 |  |  | $ | 422.3 |  |  | $ | 118.7 |
Accumulated depreciation |  | $ | (416.1 | ) |  | $ | (232.4 | ) |  | $ | (129.5 | ) |  | $ | (46.4 | )
CWIP |  | $ | 0.8 |  |  | $ | 5.3 |  |  | $ | 1.8 |  |  | $ | 0.1 |
(1) | Capacity for our electric generation 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. Values are primarily based on the net dependable expected capacity ratings for summer 2020 established by tests and may change slightly from year to year. The summer period is the most relevant for capacity planning purposes. This is a result of continually reaching demand peaks in the summer months, primarily due to air conditioning demand.
(2) | Columbia Energy Center is jointly owned by Wisconsin Power and Light, Madison Gas and Electric, and WPS. In October 2016, Wisconsin Power and Light received an order from the PSCW approving amendments to the Columbia Energy Center joint operating agreement between the parties allowing WPS and Madison Gas and Electric to forgo certain capital expenditures at the Columbia Energy Center. As a result, Wisconsin Power and Light will incur these capital expenditures in exchange for a proportional increase in its ownership share of the Columbia Energy Center. Based upon the additional capital expenditures Wisconsin Power and Light expects to incur through June 1, 2020, WPS's ownership interest would decrease to 27.5%.
WPS has partnered with an unaffiliated utility to construct two solar projects in Wisconsin. Badger Hollow I is located in Iowa County, Wisconsin, and Two Creeks is located in Manitowoc County, Wisconsin. Once constructed, WPS will own 100 MW of the output of each project for a total of 200 MW. The PSCW approved the acquisition of these two projects in April 2019. Construction began at Two Creeks and Badger Hollow I in August 2019 and October 2019, respectively. Commercial operation of both projects is targeted for the end of 2020. The CWIP balances for Badger Hollow I and Two Creeks as of December 31, 2019 were $32.5 million and $87.3 million, respectively. In August 2019, WE, along with an unaffiliated utility, filed an application with the PSCW for approval to acquire an ownership interest in a proposed solar project, Badger Hollow II, that will be located in Iowa County, Wisconsin. At its meeting on February 20, 2020, the PSCW approved the acquisition of this project. The approval is still subject to WE's receipt and review of a final written order from the PSCW. Once constructed, WE will own 100 MW of the output of this project. Commercial operation of Badger Hollow II is targeted for the end of 2021.

X
- References No definition available. + Details
Name: | us-gaap_JointlyOwnedUtilityPlantNetOwnershipAmountAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure of interests in jointly owned utility plants. + References No definition available. + Details
Name: | wec_JointlyOwnedUtilityFacilitiesDisclosureTextBlock
Namespace Prefix: | wec_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration