Diverse Resource Portfolio & Low-Carbon Pathway

48 DIVERSE RESOURCE PORTFOLIO Gas Supply • 60% supply from Canada • 40% supply from the Rockies KINGSVALE SUMAS Southern Crossing TransCanada KINGSGATEO • Natural gas serves territory through one bi-directional pipeline LNG Peaking Facilities . Portland LNG - 0.6 Bcf • Newport LNG - 1.0 Bcf Mist Gas Storage PORTLAND Mist Gas Storage Facility • Valuable asset - limited storage in the Pacific Northwest Portland LNG Newport LNG • 16 Bcf facility with 11 Bcf serving utility customers and 5 Bcf under long-term contracts Utility can recall 5 Bcf to support customer demand North Mist Storage Expansion • 4.1 Bcf expansion serves a single customer under long-term contract Malin GTN Williams OSTANFIELD Ruby Paiute Williams NW NaturalⓇ

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