Naughton Power Plant

Pacificorp

In December of last year, Pacificorp released a presentation that shook several Wyoming cities and their state leaders. It was the first hint of the utility's 20-year Integrated Resource Plan (IRP) and it included the early closure of many coal plants including three in Wyoming.

The five preferred scenarios. Higher numbers within the parentheses stand for larger consumer savings over the life of the IRP
Pacificorp

Pacificorp held another public input meeting on its 2019 Integrated Resource Plan (IRP) in Salt Lake City this week. The IRP goes through over 50 potential models to decide its energy portfolio for the near future. The utility provides power across the west including Wyoming.

Pacificorp has whittled down its preferred choices to five scenarios, which would all impact Wyoming plant retirements. Four of the five scenarios would close two of three units from Kemmerer's Naughton Plant early in 2025. All five would convert the last unit there to gas. All scenarios would also mean early retirement for part of the Jim Bridger plant near Rock Springs.

Naughton Power Plant In Kemmerer, Wy - Unit 3 was shut down on January 31, 2019
DigitalGlobe / USDA Farm Service Agency

A bill seeking to keep retiring coal plants alive has passed third reading out of Wyoming's House of Representatives today: 50-8-2. It would obligate utilities to look for another potential buyer in good-faith and accept any reasonable offer. The Wyoming Public Service Commission would be responsible in determining what’s a reasonable offer. Its chief counsel Chris Petrie said the task would be welcome and that it already engages in similar analysis.

Flickr Creative Commons, by Tom Brandt

(In a previous version of this story we indicated the entire plant was closing while only Unit 3 is closing. We regret the error.)

Stricter federal emission rules for power plants are having an effect in Wyoming. Rocky Mountain Power says plans to convert one unit of a coal-powered plant to natural gas in western Wyoming fell through and instead they’ll shut it down at the end of 2017.