Fixed-Income Investor Presentation

ON TRACK TO MEET OR EXCEED GOAL Our voluntary carbon savings goal of 30% by 2035 includes emissions from our own operations and the gas use by our sales customers 2021: Ahead of Target Savings Rate 463,137 metric tons of carbon dioxide equivalent saved. This marks 36% of savings toward goal, ahead of target pace. 2021 Source of Savings Mix 45% Energy Efficiency 40% Smart Energy 2% Renewable Natural Gas 13% Upstream Methane 22 22 NW NaturalⓇ

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