SiEnergy Texas Rate Case Settlement: $8.6M Revenue Increase, 9.8% ROE, Rates Expected November 2026
NWN is trading near its 52-week low of $42.375 (12% above the low).
Summary
SiEnergy, NW Natural's Texas subsidiary, filed a settlement in its general rate case providing an $8.6 million annual revenue increase, a 9.8% ROE, and a $343 million rate base. New rates are expected effective November 2026, pending RRC approval.
Key Events · Product Development and Regulatory · NWN
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Texas Rate Case Settlement Filed
SiEnergy Gas, Pines Gas, and Pines Gas Development filed a settlement with the Railroad Commission of Texas on September 22, 2026, resolving all issues in the general rate case.
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$8.6M Annual Revenue Increase
The settlement provides an $8.6 million annual revenue requirement increase, below the $12.0 million originally requested, with new rates expected effective November 2026.
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Regulatory Terms Established
Capital structure set at 59.75% equity / 40.25% long-term debt, return on equity of 9.8%, overall cost of capital of 8.0%, and rate base of $343 million — a $177 million increase since 2023.
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Consolidation and GRIP Participation
The settlement consolidates SiEnergy Gas, Pines Gas, and Pines Gas Development into a single rate structure and establishes baseline factors for future GRIP interim rate adjustment filings, with an initial filing required within two years.
Analysis · NWN · Energy & Transportation
A full settlement in SiEnergy's Texas rate case locks in an $8.6 million annual revenue requirement increase—below the $12.0 million originally requested but still a meaningful uplift for the fast-growing utility. The terms include a 9.8% return on equity, an 8.0% overall cost of capital, and a $343 million rate base that has grown $177 million since 2023. The settlement also consolidates SiEnergy Gas, Pines Gas, and Pines Gas Development into a single rate structure and establishes the baseline for future GRIP interim rate adjustments. New rates are expected to take effect in November 2026, subject to RRC approval. This is a positive regulatory outcome that supports continued investment in system reliability while keeping rates in line with peer utilities.
How filings like this one have moved
In the 30 days to Oct 2, 2026, 29.4% of the 1637 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.57%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, NWN was trading at $47.56 on NYSE in the Energy & Transportation sector, with a market capitalization of approximately $2B. The 52-week trading range was $42.38 to $55.99. This filing was assessed with positive market sentiment and an importance score of 7 out of 10.