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We serve gas and electric to customers in the western two-thirds of Montana and eastern South Dakota. We also have gas service in Nebraska and serve electricity to Yellowstone National Park.
NorthWestern owns and operates a diverse generation fleet of wind, water, natural gas and coal-fired resources and the high-voltage electric transmission system and distribution system. We also own and operate natural gas production, transmission and distribution systems.
Enriching Lives Through a Safe, Sustainable Energy Future
Enriching Lives Through a Safe, Sustainable Energy Future
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Enriching lives through a safe and sustainable energy future.
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Facts Matter: Clarifying the NorthWestern Energy–Black Hills Energy Merger
Date: Jun 15, 2026
TYPE: News
By Rick Edwards, NorthWestern Energy Director Community Connections
Montanans need the facts about decisions that affect their energy future. Some commentary about the proposed merger between NorthWestern Energy and Black Hills Energy includes claims that are false or misleading, particularly when it suggests the merger is really about subsidizing data centers or shielding important information from public view. Those are serious concerns, and they require a clear response.
One of the most important points to understand is that two separate issues are being discussed at the same time. One is the merger between NorthWestern Energy and Black Hills Energy. The other is a proposed Large New Load Tariff Rule that would apply to future high energy demand customers in Montana such as data centers. These are different Montana Public Service Commission proceedings with different dockets, processes, records and opportunities for public input.
The Montana Public Service Commission public hearing on the proposed merger was held in May. Now the Commission will weigh the evidence to decide whether the merger itself will cause “no harm” to customers and is in the public interest.
Across the country, energy demand is growing, infrastructure is aging and energy companies are being asked to plan for long term reliability in a more complex environment. Meeting those needs requires steady investment and financial strength.
The purpose of this merger is straightforward. It is intended to strengthen NorthWestern Energy’s ability to make necessary infrastructure investments, improve access to capital and provide the operational flexibility needed to maintain safe, affordable and reliable service over time. Those are practical considerations that directly affect our Montana customers.
At the same time, there are questions about potential large new energy users in Montana, including data centers. Questions about impacts on energy reliability and rates are understandable.
That is why NorthWestern Energy proposed a Large New Load Tariff Rule, which is being reviewed in a separate Montana PSC proceeding. Our intent with this proposal is to establish a transparent regulatory process to ensure that customers with new, very large energy needs pay the cost of the infrastructure required to serve them. It also includes financial protections and exit provisions to protect our existing customers.
The goal is simple. Growth, if it occurs, should be managed in a way that protects the customers who already rely on our Montana energy system every day. It is important not to confuse that separate tariff rule discussion with the merger itself.
Reliable and affordable electric service requires long-term planning, continued investment and the financial capacity to respond to changing conditions. That includes maintaining infrastructure, strengthening the grid and preparing for future needs in a way that protects reliability and affordability.
The proposed merger is focused on those fundamentals. It is about maintaining a strong, regulated energy company that can continue to deliver dependable service for Montana customers affordably.
This decision will be important for our Montana customers, and it should be evaluated carefully, transparently and on the facts. Reasonable people can ask hard questions with the goal of a dialogue that moves past fear and confusion caused by inaccurate claims and instead focuses on what’s in the long-term best interest of Montanans.
Our focus remains where it should be: providing safe, reliable and affordable energy for Montana customers today and into the future.