 SPOKANE, Wash., Jan. 16, 2023 GLOBE NEWSWIRE Avista Corporation Avista and NorthWestern Energy NorthWestern announce an agreement through which Avista will turn over its interest in the Colstrip coal-fired power plant to NorthWestern on December 31, 2025. Through the transaction, NorthWestern will assume ownership of the 222 MW generating capacity that is currently owned ... The post Avista and NorthWestern Energy enter into strategic transaction of Colstrip, Montana assets appeared... 