Wisconsin Power and Light Co. completed the second segment of a deal to increase its stake in the 1,112-MW Columbia coal-fired facility in Pardeeville, Wis., on June 8, according to a June 12 filing with the Federal Energy Regulatory Commission.

The Alliant Energy Corp. subsidiary agreed to purchase 47 MW from Wisconsin Public Service Corp. and 33 MW from Madison Gas and Electric Co. in exchange for relieving them of certain capital expenditure obligations. The ownership share transfer of capacity will be done over four years at 45 MW in 2016, at 23 MW in 2017, 12 MW in 2018 and less than 1 MW in 2019.

The parties consummated part of the transaction Dec. 5, 2017. (FERC docket EC17-47)

Wisconsin Public Service is a WEC Energy Group Inc. subsidiary, and Madison Gas and Electric is owned by MGE Energy Inc.