As NorthWestern Energy was in discussions to acquire this incremental Colstrip generation, we were also in the midst of adding another 160 megawatts of solar generation to our Montana portfolio.

Source: https://forextv.com/top-news/northwestern-energy-enters-into-strategic-agreement-to-secure-reliable-cost-effective-energy-service-for-montana/

So our existing ownership in Colstrip save customers $10 million.

Source: https://seekingalpha.com/article/4579660-northwestern-corporation-nwe-q4-2022-earnings-call-transcript?source=feed_all_articles

We remain engaged with the other owners of Colstrip to address several outstanding issues, including potential future emissions reductions at the plant and resolution of pending legal proceedings.

Source: https://forextv.com/top-news/avista-and-northwestern-energy-enter-into-strategic-transaction-of-colstrip-montana-assets/