ACQUISITIONS	12 Months Ended
Dec. 31, 2017
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS Acquisition of a Wind Energy Generation Facility in Wisconsin In October 2017, we, along with two other utilities, entered into an agreement to purchase the Forward Wind Energy Center, which consists of 86 wind turbines located in Wisconsin with a total capacity of 129 MW. The aggregate purchase price is approximately $174 million of which our proportionate share is 44.6%, or approximately $78 million. We currently purchase 44.6% of the facility’s energy output under a power purchase agreement. The FERC approved the transaction on January 16, 2018. The transaction remains subject to PSCW approval and is expected to close in the spring of 2018. Parent Company's Acquisition of Natural Gas Storage Facilities in Michigan On June 30, 2017, WEC Energy Group completed the acquisition of Bluewater for $226.0 million. Bluewater owns natural gas storage facilities in Michigan that will provide a portion of the current storage needs for our natural gas utility operations. In September 2017, we entered into a long-term service agreement with a wholly owned subsidiary of Bluewater to take the allocated storage, which was then approved by the PSCW in November 2017. See Note 20, Regulatory Environment, for more information.

ACQUISITIONS

12 Months Ended

Dec. 31, 2017

Acquisition of a Wind Energy Generation Facility in Wisconsin

In October 2017, we, along with two other utilities, entered into an agreement to purchase the Forward Wind Energy Center, which consists of 86 wind turbines located in Wisconsin with a total capacity of 129 MW. The aggregate purchase price is approximately $174 million of which our proportionate share is 44.6%, or approximately $78 million. We currently purchase 44.6% of the facility’s energy output under a power purchase agreement. The FERC approved the transaction on January 16, 2018. The transaction remains subject to PSCW approval and is expected to close in the spring of 2018.

Parent Company's Acquisition of Natural Gas Storage Facilities in Michigan

On June 30, 2017, WEC Energy Group completed the acquisition of Bluewater for $226.0 million. Bluewater owns natural gas storage facilities in Michigan that will provide a portion of the current storage needs for our natural gas utility operations. In September 2017, we entered into a long-term service agreement with a wholly owned subsidiary of Bluewater to take the allocated storage, which was then approved by the PSCW in November 2017. See Note 20, Regulatory Environment, for more information.