Two Puget Sound Energy coal plants will close in December because of financial challenges. The two coal producing units are co-owned by PSE and Talen Energy and are part of the larger Colstrip, Montana power plant.

Puget Sound Energy, Washington's biggest electrical utility, gets an estimated 38 percent of its power from Colstrip's plants. That comes from four coal facilities, the oldest two of which are now set to close. PSE's director of generation and natural gas storage, Ron Roberts, said they'll need to find a replacement for the power PSE will lose in December. He said it won't be coal. "We would be looking primarily at hydro resources within the region, as well as we have a all-source request for proposals out to look at replacement power," Roberts said. The two older coal plants were already mandated to close in 2020 due to a settlement from environmental lawsuits.