NorthWestern Energy Group

Facts that name NorthWestern Energy Group, newest first.

Energy Deal Nov 5, 2026

NorthWestern lists Quantica Infrastructure study load of 25 MW ramping to 1,100 MW, targeted for early 2029

1,100 MW

The Montana large-load opportunity, announced July 30, 2025, is under a Development Agreement. Atlas Power's study load is 75 MW ramping to 150 MW, targeted for late 2027.

Atlas Power NorthWestern Energy Group Quantica Infrastructure Source: NorthWestern Energy Group, Inc. 8-K, filed Nov 5, 2026

Energy Filing Nov 5, 2026

NorthWestern filed a Large New Load tariff rule with the MPSC covering new loads of five megawatts or greater, including data centers

5 MW

Filed in March 2026, the rule requires executed Electric Service Agreements for commitments of 50 megawatts or greater to go to the MPSC for approval before service begins. Loads of 5 to 49 megawatts follow standardized processes without case-specific approval, and the MPSC has not set settlement or hearing dates.

NorthWestern Energy Group Source: NorthWestern Energy Group, Inc. 8-K, filed Nov 5, 2026

Energy Financial disclosure Nov 5, 2026

NorthWestern's remaining Montana data center development agreements expect 75 megawatts from late 2027, growing to about 1,250 megawatts or more by 2030

1,250 MW

NorthWestern has development agreements with Atlas Power Holdings LLC and Quantica Infrastructure to supply power to data centers in Montana. The Sabey Data Centers development agreement has been terminated, and the company is working to execute electric service agreements.

Atlas Power Holdings LLC NorthWestern Energy Group Quantica Infrastructure Sabey Data Centers Source: NorthWestern Energy Group, Inc. 8-K, filed Nov 5, 2026