Air Quality | Northwestern Energy - Yellowstone County Generating Station

February 11 2026

The Department of Environmental Quality has prepared a Proposed Permit regarding Operating Permit #OP5261-00, for Northwestern Energy - Yellowstone County Generating Station.

Location:

45.65973 latitude, -108.74620 longitude
Yellowstone County

Associated Materials:

OP5261-00
TRD5261-00

Facility Appeal Period Ends:

March 30, 2026 11:59PM

Contact: Craig Henrikson

Tags: Air and Public Notice