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Montana PSC Weighs Data Center Rates
Coverage from Daily Inter Lake, Daily Montanan, and others
Montana regulators are weighing how NorthWestern Energy should serve large data center customers and whether those customers will cover the additional power, transmission, and generation costs they create.
Proposed rules include multi-year service commitments and minimum usage requirements, while consumer, environmental, industrial, and local-government groups seek stronger protections, separate customer treatment, and greater disclosure. The proceedings also overlap with NorthWestern’s proposed $15.4 billion merger with Black Hills and broader questions about Montana’s energy mix, grid capacity, water use, and local economic benefits.
The story has become more concrete on how Montana may regulate data-center service, with proposed contract terms and cost-allocation protections now more explicit. The merger and resource-plan scrutiny remain central, but the focus has sharpened on specific tariff rules and who pays for new infrastructure.
The story has broadened from a single tariff dispute into a wider regulatory fight over how Montana should plan for hyperscale data-center growth, including resource planning and merger review. The most notable new element is the much larger demand outlook and the added focus on community impacts like water use, noise, and local development benefits.