Northwestern Energy Group Inc (NWE) | The Buildout — AI Infrastructure
The Verdict
NorthWestern Energy is a regulated electric and natural gas utility serving Montana, South Dakota, Nebraska, and Yellowstone National Park. For AI infrastructure, its role is load service rather than technology: data-center developers in its territories would sign energy service agreements for regulated electric service under a proposed Montana large-new-load tariff. Its physical edge is transmission position and available Colstrip capacity in Montana.
| Market Cap | — |
| Revenue (TTM) | $1.7B |
| Revenue Growth | +10.7% |
| EBITDA Margin (TTM) | 34.1% |
| Net Debt | $3.6B |
| Earnings Beats | 4 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Merger: 99.7% of votes cast favored the Black Hills all-stock deal; approvals received from Nebraska PSC, South Dakota PUC, and FERC.
- Base plan: $3.2B 2026–2030 capital plan supports 4%–6% rate base and EPS growth from a roughly $5.4B rate base.
- Data-center funnel: request queue rose from 6 to 8; high-level assessments from 4 to 8; Quantica agreement runs from 25 MW to 1.1 GW.
- Earnings: Q2 2026 adjusted EPS of $0.50 was up $0.10 year over year; 2026 EPS guidance affirmed at $3.68–$3.83.
- Capacity: 370 MW Puget Colstrip interest is available to serve large-load customers; North Plains Connector option is 10% / 300 MW.
What We’re Watching
- Montana merger decision expected mid-October to mid-November 2026; commissioner removal challenge and record-reopen request could add delay.
- Quantica and Atlas ESAs expected by year-end 2026; management repeated 'No guarantees.'
- Colstrip recovery: PCCAM docket is expected to move through Q4 2026/early 2027; Q1 and Q2 each carried $0.05 EPS unrecovered.
- South Dakota still lacks data-center sales-tax relief; next legislative session is the next test.
The base utility thesis is intact: 2026 guidance and the base capital plan were affirmed, and Q2 adjusted EPS improved on new Montana rates and transmission revenue. The data-center and merger thesis is strengthening on process but remains uncommitted—no energy service agreements are signed and no data-center capital is in the plan. The open question is whether the two expected ESA signatures by year-end 2026 convert the development funnel into contracted load.
Earnings Beat
Q2 FY2026 revenue was $392.6M with gross margin of 79.9%; net income was $25.0M, or $0.40 per diluted share, versus $21.2M, or $0.35, in Q2 2025. Adjusted EPS was $0.50, up $0.10 year over year, with merger costs of $0.04 and unrecovered Colstrip operating expenses of $0.05.
| Metric | Q2 FY2026 | Q1 FY2026 | Q2 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $393M | $498M | $343M | +14.6% |
| Gross margin | 79.9% | 57.3% | 59.8% | +2010bps |
| EBITDA | $131M | $181M | $123M | +6.6% |
| EPS | $0.41 | $1.03 | $0.35 | +17.7% |
| Adjusted diluted EPS (non-GAAP) | $0.50 | $1.31 | $0.40 | +25.0% |
I would not concern yourself too much with megawatts until you see development agreements.— Brian Bird, July 30, 2026
Management tone: Management's tone was measured and disciplined: it affirmed guidance, repeated 'No guarantees' on ESA timing, refused to quantify data-center megawatts until development agreements appear, and was direct about the South Dakota sales-tax disappointment and unrecovered Colstrip costs.
Management Guidance
Management affirmed 2026 non-GAAP EPS guidance of $3.68–$3.83 and long-term rate base and EPS growth of 4%–6%, with a $3.2B 2026–2030 capital plan. Assumptions include normal weather, no common equity issuance in 2026, an effective tax rate of 14%–18%, and approval of the PCCAM waiver plus power prices sufficient to recover incremental Colstrip costs.
Trajectory
Revenue is stable to growing, with Q2 FY2026 at $392.6M up 14.6% year over year and Q1 at $497.6M; the quarters are highly seasonal. The core margin is improving from new Montana rates, transmission revenue and the Puget Colstrip sale contract, but is offset by incremental Colstrip operating costs, higher depreciation and interest, and merger costs. Q2 carried $0.05 EPS of unrecovered Colstrip expense and $0.04 of merger costs, while Q1 had a $0.17 EPS warm-weather headwind.
The Model
The model projects FY+1 revenue of $1,800M and EBITDA of $702M, a 39.0% margin, and FY+2 revenue of $3,707M and EBITDA of $1,442M, a 38.9% margin. The near-term anchor is the regulated utility's current revenue base; the FY+2 step-up embeds an expansion that the source record does not yet tie to signed ESAs or committed data-center capital. The model's own dispersion is wide, with FY+1 revenue spread of 35% and FY+2 revenue spread of 53%.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $1.6B | $1.8B | $3.7B |
| YoY Growth | — | +11.8% | +105.9% |
| EBITDA | $575M | $702M | $1.4B |
| EBITDA Margin | 35.7% | 39.0% | 38.9% |
Projections are the median of 5 independent model runs.
Management affirmed 2026 non-GAAP EPS guidance of $3.68–$3.83 and long-term rate base and EPS growth of 4%–6%, with a $3.2B 2026–2030 capital plan. Assumptions include normal weather, no common equity issuance in 2026, an effective tax rate of 14%–18%, and approval of the PCCAM waiver plus power prices sufficient to recover incremental Colstrip costs.
What Could Go Right — and Wrong
- Montana approves the Black Hills merger on schedule, giving the combined utility scale and a combined 5%–7% earnings growth target.
- Quantica and Atlas sign ESAs by year-end 2026, converting development agreements into contracted load.
- Montana approves the large-new-load tariff, creating a cost-recovery framework and opening the path to move the 370 MW Puget Colstrip interest into state-regulated business.
- Colstrip recovery is resolved through a rate review or PCCAM docket, removing about $12M per quarter of incremental operating-cost drag.
- Named transmission options advance—Path 8 expansion, North Plains Connector, or the Montana-to-Idaho line—into committed capital.
- Montana delays or rejects the merger, putting the combined scale and 5%–7% growth framework at risk.
- The Quantica and Atlas ESAs do not materialize by year-end, leaving data-center load as a queue rather than contracted revenue.
- Colstrip recovery remains stranded; the roughly $48M annual incremental cost stays unrecovered and the quarterly drag persists.
- Transmission constraints cap growth as import capacity declines through 2028 before large load is added.
- South Dakota sales-tax relief fails again, leaving data-center equipment-intensive projects disadvantaged.
Looking Ahead
The next 12 months turn on a Montana merger decision, a possible pair of ESA signatures, and the PCCAM cost-recovery docket. Management expects the Montana decision around mid-October to mid-November 2026 and still targets ESAs with Quantica and Atlas by year-end 2026. In parallel, the company expects to submit a South Dakota wildfire mitigation plan in 2026 and pursue sales-tax relief in the upcoming legislative session.
- Mid-Oct–Nov 2026Montana merger decision — Tests whether Black Hills merger clears final state approval and can close in 2026.
- Year-end 2026Quantica and Atlas ESAs — Tests conversion of two development agreements into signed energy service agreements.
- Q4 2026–early 2027PCCAM docket resolution — Tests path for recovering incremental Colstrip operating costs.
- 2026South Dakota wildfire mitigation plan — NWE plans to file South Dakota wildfire mitigation plan for PUC approval.
- Upcoming legislative sessionSouth Dakota sales-tax relief — NWE will seek data-center equipment sales-tax relief after the prior effort failed.
- By 2030South Dakota generation project — 131 MW resource-adequacy project completion; equity funding begins in 2027+.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $1.5B | $1.6B | $1.7B | +6.4% |
| Gross Margin | 56.6% | 62.6% | 66.5% | +598bps |
| EBITDA | $551M | $575M | $4.8B | +4.4% |
| EBITDA Margin | 36.4% | 35.7% | 34.1% | 68bps |
| Net Income | $224M | $181M | $171M | -19.3% |
| Free Cash Flow | −$142M | −$130M | −$790M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)66.5%
- EBITDA Margin (TTM)34.1%
- Net Margin (TTM)10.1%
- ROIC3.9%
- FCF Conversion-33.3%
- SBC / Revenue0.4%
The Company
NorthWestern Energy is a regulated electric and natural gas utility serving approximately 850,300 customers in Montana, South Dakota, Nebraska, and Yellowstone National Park. Its two reportable segments are electric utility operations, covering generation, purchase, transmission, and distribution of electricity, and natural gas utility operations, covering production, purchase, transmission, storage, and distribution of natural gas. The company has a stated Net-Zero by 2050 commitment for Scope 1 and Scope 2 carbon and methane emissions.
NWE owns or holds interests in hydro, coal, natural gas, and wind generation across Montana, South Dakota, Iowa, and North Dakota. Its largest disclosed generation interest in the 10-K table is Colstrip Units 3 & 4 in Montana, where it holds a 55% / 814 MW interest and where Talen Montana, LLC is the operator. NWE's growth pivot is prospective data-center load in Montana and South Dakota, with a proposed Montana large-new-load tariff and existing South Dakota large-load tariff.
Business Segments
Competitive Landscape
The source material frames NWE as a regulated utility whose growth depends on regulatory approval and prospective data-center load. Management's central strategic line is 'We need to be bigger,' pointing to a more competitive environment than utilities have seen in their first 100 years. The 10-K identifies Xcel Energy as a South Dakota transmission interconnection and Avista Corporation as a Montana transmission interconnection and Colstrip seller.
- Xcel EnergyNamed as a South Dakota transmission interconnection in the NWE 10-K.
- Avista CorporationNamed as a Montana transmission interconnection and Colstrip seller to NWE.
- Black Hills CorporationPending all-stock merger partner, not characterized as a competitor; management cited combined company 5%–7% EPS growth post-close.
Supply Chain
NWE sits downstream of fuel, gas transport, and equipment suppliers and upstream of retail and prospective data-center customers. The 10-K discloses physical interconnection and Colstrip operating relationships, but no single customer revenue concentration is quantified.
More on NWE: Earnings recap