NorthWestern Energy on Dec. 17 announced that it has signed a letter of intent to provide energy services for a developer planning new data centers in Montana.
The centers will be served as part of NorthWestern Energy’s regulated business, which is expected to lower the cost per customer to operate NorthWestern’s Montana generation resources.
The energy service load is expected to be a minimum 50 megawatts, beginning in 2027, with growth to 250 megawatts or more by 2029.
Investor-owned NorthWestern Energy said its recent addition of on-demand energy generation from the Yellowstone County Generating Station and the anticipated additional capacity from the Colstrip Plant, starting January 2026, strengthens its ability to serve existing and new Montana electric customers reliably at lower customer costs.
