PORTLAND, Ore.–(BUSINESS WIRE)–NW Natural, Oregon’s largest gas utility company and one of the state’s oldest businesses, recently filed its annual renewable natural gas report with the Oregon Public Utilities Commission. As part of the filing, NW Natural disclosed its 2025 renewable natural gas (RNG) purchase amount of 3.35%, marking a significant increase over 2024 volumes. The company has since secured contracts for 4% RNG in 2026 and is looking to increase its RNG percentage again in 2027.