Fixed-Income Investor Presentation

18 OREGON 2022 RATE CASE 。 Order received October 24, 2022 - Multi- party settlements approved by the OPUC. New rates were effective Nov. 1, 2022 2020 RATE CASE Settled 2022 RATE CASE Total Request Order 。 Case based on system improvements - based on continued system investment primarily related to: ROE 9.4% 9.5% 9.4% ROR 6.965% 6.886% 6.836% Equity/ • Resiliency & reliability Technology including enterprise resource planning system and cybersecurity projects 50/50 50/50 50/50 LT Debt Rate Base $1.44B $1.78B $1.76B Revenue +$45.1M +$78.0M +$59.4M Requirement • Resource center facility renovations NW NaturalⓇ

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