Atlas Power data center south of Butte
operating Butte, Silver Bow County, Montana
DeveloperAtlas Power Group
UtilityNorthWestern Energy
Capacity150 MW
Investmentunknown
Latest
2026-10
Released PSC documents show no electric service agreement yet for growth to 150 MW; NorthWestern says it is still studying how to serve and finance the load
Notes: Uses about 75 MW today under a nonbinding letter of intent for up to 150 MW.
Sources: The 406 · NorthWestern Energy · Montana Free Press