Detailed narrative
Q1 Financial Performance
NorthWestern Energy reported GAAP diluted EPS of $1.03 and non-GAAP diluted EPS of $1.31 for Q1 FY26. The adjusted EPS represents a 7.4% increase over Q1 2025. This performance was achieved despite a historically warm first quarter, which negatively impacted volumetric loads by $0.17 per share, and unrecovered operating costs from incremental Colstrip ownership. Improved margins from new rates in Montana and growth in transmission revenues partially offset these headwinds.
Merger Progress and Stakeholder Benefits
The pending merger with Black Hills received overwhelming shareholder approval, with 99.7% of votes cast in support. Constructive settlements have been reached with key interveners in Montana, Nebraska, and South Dakota, streamlining the regulatory approval process. Management highlighted the merger's benefits, including increased scale, expanded investment opportunities, a stronger balance sheet, and enhanced business diversity, which are expected to accrue to shareholders and customers through cost savings in future rate reviews.
Data Center Development
NorthWestern Energy announced a third development agreement with Quantica Infrastructure, adding to its growing large load pipeline. The total data center request queue has increased from 6 to 8, with 3 now in development agreements. Quantica's project alone is expected to ramp from 25 MW to 1.1 GW by 2031, with a targeted start date of early 2029. The company is actively working to convert these development agreements into Energy Service Agreements (ESAs) by the end of 2026, though this depends on developers meeting their obligations.
Regulatory and Legislative Environment
South Dakota passed Senate Bill 36, providing significant wildfire liability protections for utilities, similar to existing Montana legislation. The company plans to submit its wildfire mitigation plan for South Dakota PUC approval in H2 2026. NorthWestern also submitted a Large New Load tariff proposal with the MPSC in March 2026, aiming to protect existing customers while enabling the service of large industrial loads like data centers.
Capital Plan and Equity Needs
The company's $3.2 billion capital plan for 2026-2030 remains unchanged, focused on essential investments for customer needs. This plan does not include incremental investments for regional transmission or large loads, beyond the South Dakota generation capacity adjusted for in Q4. NorthWestern expects to fund its base capital plan without issuing new common equity in 2026, though incremental capital for South Dakota generation will require equity needs in 2027 and beyond.
Colstrip Ownership Strategy
NorthWestern clarified its strategy for incremental Colstrip ownership. The Avista portion (222 MW) was acquired to achieve resource adequacy for existing customers. The Puget portion (370 MW) was acquired to gain control over Colstrip's future and is currently FERC-regulated. This 370 MW is available to serve large new loads, and the company intends to move it into the Montana state-regulated business if the Large New Load tariff is approved.