HELENA, Mont. — Montana regulators have approved the sale of a Spokane, Washington-based utility that could have implications for the Colstrip coal-fired power plant’s future.
The Montana Public Service Commission voted Tuesday for Toronto, Canada-based Hydro One’s acquisition of Avista Corp. Several Pacific Northwest states must approve the sale.
Avista is a co-owner of the Colstrip plant, a major eastern Montana economic driver that is under pressure to close from environmental groups and other states.
Avista and Hydro One set a 2027 end-of-life depreciation schedule for Colstrip’s two newer units, a date commissioners say is too soon and politically driven.