425: NorthWestern Energy CEO Details Black Hills Merger Benefits

NorthWestern Energy's CEO Brian Bird provided insights into the strategic rationale, expected benefits, and regulatory path for the proposed merger with Black Hills Corporation.

Summary

• NorthWestern Energy Group, Inc. (NorthWestern) is a party to an Agreement and Plan of Merger, dated August 18, 2025, with Black Hills Corporation.
• The merger is driven by the need for increased scale and scope, aiming to enhance competitiveness and capture higher growth opportunities.
• The combined entity is projected to achieve an EPS growth rate of 5-7%, an increase from the individual companies' 4-6% growth.
• Existing capital plans for the combined entity are expected to proceed without the need for new equity.
• Anticipated combination benefits include supply chain efficiencies, reduced executive overhead (e.g., fewer CEOs, boards, chief legal officers), and operational improvements through best practices and attrition.
• Regulatory approval for the merger is expected to be challenging but manageable, with the company emphasizing the financial strength and customer benefits of the combined entity.
• The Montana rate case has pending gas and electric settlements, with the Yellowstone generating plant and the PCCAM amount remaining key issues for commission approval.
• The Yellowstone plant is considered a critical resource for adequacy, built at a reasonable cost, and could potentially be sold for more than its original price.
• NorthWestern anticipates more frequent rate filings in Montana, likely every other year, unless the commission adopts mechanisms like attrition or revenue trackers.
• For data centers, NorthWestern can serve the first two projects with existing tariffs, but a new tariff may be required for future, larger projects, particularly in Montana and South Dakota.
• The Integrated Resource Plan (IRP) is scheduled for early 2026 and will address data center needs and long-term generation strategy, with a preference for owning regulated generation on rate base.
• Operations & Maintenance (O&M) costs increased by 8% due to wildfire insurance and Yellowstone County operating expenses, but moderation is expected in 2026.
• Significant capital investment opportunities exist in electric transmission (e.g., Grid United projects, M2I line, Path 80) and gas transmission to serve LDC business and new gas generation, as well as incremental generation in South Dakota.
• NorthWestern holds a 10% ownership (300 MW) in the North Plains Connector project, viewing it as strategic for power price arbitrage, system interconnection, and the Colstrip energy hub.
• Montana's House Bill 490, new wildfire legislation, provides strict liability protection for utilities, and further protections are expected upon commission approval of the company's wildfire plan.
• The company has significantly enhanced its wildfire strategy with situational awareness and the deployment of four technologies, including cameras, to improve prevention and response.

Sentiment

Score: 7

Explanation: The overall sentiment is positive due to the strategic merger, expected EPS growth, and proactive management of risks like wildfires and capital investments. However, regulatory uncertainties in Montana and the complexity of large projects temper the score slightly.

Positives

• The merger with Black Hills is expected to increase EPS growth from 4-6% to 5-7%, indicating enhanced financial performance.
• The combined entity will have a stronger balance sheet and is projected to fund existing capital plans without requiring new equity.
• Anticipated combination benefits in supply chain, executive overhead, and operational efficiencies are expected to drive cost savings and improved performance.
• The Yellowstone generating plant, a critical resource, was built at a reasonable cost and could be sold for more than its original investment, highlighting prudent asset management.
• Significant demand for data centers, particularly in Montana, presents substantial growth opportunities for load and associated infrastructure investment.
• New Montana House Bill 490 provides constructive legislation for wildfire liability, offering stronger protections for the company and customers.
• The company has deployed advanced technologies and improved situational awareness for wildfire prevention and response, enhancing operational resilience.
• Numerous capital investment opportunities in electric and gas transmission, and generation, are identified to support future growth and system reliability.

Negatives

• Regulatory lag in Montana is expected to necessitate frequent rate filings, likely every other year, creating ongoing regulatory burden.
• Uncertainty remains regarding the Montana Public Service Commission's approval of the Yellowstone generating plant and the PCCAM amount in the rate case.
• A new tariff may be required for data centers beyond the initial two projects, creating planning uncertainty for future large load growth.
• O&M costs increased by 8% in 2025, primarily due to wildfire insurance and Yellowstone County operating expenses, although moderation is expected.
• Predicting large load growth, such as from data centers, is becoming increasingly difficult, complicating Integrated Resource Plan (IRP) development.
• Regulatory approvals for large transmission projects, like the North Plains Connector, are complex and can be challenging, particularly for parties farther from key connection points.

Risks

• Delays in consummating the potential transaction, including as a result of required regulatory and shareholder approvals, which may not be obtained on the expected timeline, or at all.
• Any event, change, or other circumstance that could give rise to the termination of the merger agreement.
• Required regulatory approvals for the merger may be subject to conditions not anticipated by NorthWestern and Black Hills.
• The possibility that any of the anticipated benefits and projected synergies of the potential transaction will not be realized or will not be realized within the expected time period.
• Disruption to the parties' businesses as a result of the announcement and pendency of the transaction, including potential distraction of management and challenges in retaining and hiring key personnel.
• Reputational risk and the reaction of each company's customers, suppliers, employees, or other business partners to the transaction.
• The possibility that the transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events.
• The outcome of any legal or regulatory proceedings that may be instituted against NorthWestern or Black Hills related to the merger agreement or the transaction.
• Risks associated with third-party contracts containing consent and/or other provisions that may be triggered by the proposed transaction.
• Legislative, regulatory, political, market, economic, and other conditions, developments, and uncertainties affecting NorthWestern's and Black Hills' businesses.
• The evolving legal, regulatory, and tax regimes under which NorthWestern and Black Hills operate.
• Restrictions during the pendency of the proposed transaction that may impact NorthWestern's or Black Hills' ability to pursue certain business opportunities or strategic transactions.
• Unpredictability and severity of catastrophic events, including, but not limited to, extreme weather, natural disasters, acts of terrorism or outbreak of war or hostilities, as well as NorthWestern's and Black Hills' response to any of the aforementioned factors.
• The inherent risk of starting wildfires, despite mitigation efforts.

Future Outlook

The combined entity with Black Hills is expected to achieve a 5-7% EPS growth rate, up from the individual 4-6%, without needing new equity for existing capital plans. The company anticipates moderating O&M cost increases in 2026 after a significant rise in 2025. Future rate filings in Montana are expected every other year. The Integrated Resource Plan (IRP) in early 2026 will outline long-term supply plans, including for data center demand. Significant capital investment opportunities are foreseen in electric and gas transmission, and generation, particularly in Montana and South Dakota.

Management Comments

• "Scale and scope get to be so much more important today."
• "We saw a means to get to five to seven [percent EPS growth], that was huge."
• "The real advantage here is the scale that we're going to bring. I think that's going to release a lot of value in the going forward company stock."
• "We saw a means to go forward with our existing capital plans without any equity."
• "It's going to be difficult, I think, for commissions to say no to this [merger]."
• "Combination benefits will be there and ultimately as we know, those benefits will accrue to customers ideally over time through rate reviews."
• "We want to make sure that the business is serving customers as it should and not rock that boat too much, particularly the start."
• "Yellowstone County's a big issue yet. And then the PCCAM in terms of the actual PCCAM amount has to be determined."
• "We could sell that plant [Yellowstone] for more than what we paid for."
• "We've been pretty open that we're going to be more frequent [with rate filings]. I mean, ideally it's every other year."
• "We believe these first two [data centers] we can do because we have available load today to serve them to use our existing tariff."
• "Ideally, we want to own our own generation and have it on rate base. Ideally, it's all regulated resources and own that generation."
• "We've been very cost control conscious throughout our time period and we're going to continue to be."
• "I sleep much better on the wildfire. Every utility is certainly going to have a risk to start wildfires, but today we feel much, much better our means to react to those and also to prevent as many as we possibly can."

Industry Context

The utility industry is increasingly focused on scale and scope due to changing demand pictures, supply chain management, and competition for large loads like data centers. The trend towards larger combined entities is seen as a way to enhance financial strength, capture higher growth opportunities, and better manage capital investments. Wildfire risk and associated insurance costs remain a significant industry-wide challenge, particularly in Western states, driving legislative and technological responses. The demand for natural gas generation is high, reflecting broader energy transition dynamics and resource adequacy concerns.

Comparison to Industry Standards

• The combined entity's projected EPS growth rate of 5-7% is competitive within the utility sector, with the ability to fund existing capital plans without new equity being a strong point compared to some peers.
• The cost of the Yellowstone generating plant (built below $2,200-$2,400/KW replacement cost for new natural gas combined cycle generation) demonstrates prudent capital management compared to current industry benchmarks.
• Montana's House Bill 490 on wildfire liability is considered among the best state legislation, comparable to Utah's, offering stronger protections than some other states where utilities and customers bear higher costs (e.g., California).
• The company's focus on transmission investment, including projects like North Plains Connector and M2I, aligns with broader industry trends of grid modernization and strengthening interconnections to manage increasing power flows and resource integration.

Legal Proceedings

• Outcome of any legal or regulatory proceedings that may be instituted against NorthWestern or Black Hills related to the merger agreement or the transaction.
• Legal challenges during the construction of the Yellowstone generating plant.

Stakeholder Impact

• Shareholders: Expected increase in EPS growth (5-7%), potential for increased stock value due to scale, and a growing dividend tradition.
• Customers: Anticipated combination benefits from the merger are expected to accrue to customers over time through moderated rate increases. Wildfire legislation (HB 490) is designed to protect customers from wildfire payouts.
• Employees: Operational efficiencies post-merger may lead to some workforce adjustments, primarily through attrition, but management aims not to "rock the boat too much" initially.
• Suppliers/Vendors: Supply chain benefits from increased scale are expected to lead to lower collective payments to vendors.
• Regulators: Will be involved in approving the merger, Montana rate case, and data center tariffs.

Next Steps

• Obtain regulatory and shareholder approvals for the merger with Black Hills Corporation.
• Montana Public Service Commission to approve gas and electric settlements, and decide on Yellowstone generating plant and PCCAM amount.
• Commission hearing on data center tariff for projects beyond the initial two.
• File the next Integrated Resource Plan (IRP) in early 2026.
• Provide key drivers for the standalone '26 plan at November EEI meetings.
• Issue guidance for '26 in February.
• Continue to implement wildfire prevention and response strategies, including seeking commission approval for the wildfire plan.

Key Dates

Recommendation

The proposed merger with Black Hills Corporation is a significant strategic move, projected to boost EPS growth from 4-6% to 5-7% without requiring new equity for existing capital plans. This enhanced financial strength, combined with substantial capital investment opportunities in transmission and generation, positions the company for long-term growth. Proactive management of regulatory challenges, particularly the constructive wildfire legislation in Montana, further de-risks the investment. While regulatory approvals and data center tariff uncertainties exist, the overall strategic direction and financial outlook are positive, making it an attractive investment.

Keywords

NorthWestern Energy, Black Hills Corporation, Merger, Utility, Energy, Montana, South Dakota, EPS Growth, Data Centers, Wildfire, Transmission, Capital Investment, Regulatory Approval, Rate Case