Private developer Rocky Mountain Power LLC filed an application with the Federal Energy Regulatory Commission, seeking approval to sell its 107-MW coal-fired Hardin power plant in Montana to a subsidiary of Big Horn Datapower Holdings LLC.

The Hardin facility was built in 2006 and is interconnected to the transmission system owned and operated by NorthWestern Corp., which does business in Montana as NorthWestern Energy.

Rocky Mountain Power has been seeking to sell or close the money-losing plant because of the decline in the market price of electricity. NorthWestern, which was among the potential buyers, in January 2018 decided against buying the struggling facility.

According to the FERC application, Big Horn Datapower Holdings is owned by a private individual. Rocky Mountain Power is owned by Heorot Power Holdings LLC, which in turn is owned 88.57% by investment funds managed or advised by GSO Capital Partners LP.

The commission is requested to approve the transaction by Feb. 4 (FERC docket EC19-41)