OPUC approves NW Natural rate case with $20.7M revenue increase, effective Oct 31

Northwest Natural Holding Co

Final order on Oct 24 approves stipulations; revenue increase of $20.7M over existing rates.
Original request was $59.4M; stipulation set $21.3M; final adjusted down for capital projects.
Average rate base $2.27B, up $180.1M since last case; new rates effective Oct 31, 2025.
Approved ROE of 9.5%, capital structure 50% equity/50% debt, overall cost of capital 7.12%.
OPUC rejected proposals by CUB and Coalition; resolves regulatory litigation.

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