Under the agreement, NW Natural will purchase the environmental attributes generated by Archaea related to up to one million MMBtu of RNG annually from its portfolio of RNG production facilities for a fixed fee for a period of 21 years. The agreement will commence in early 2022, with the full annual quantity beginning in 2025. The RNG produced by Archaea for this long-term partnership is expected to have a positive impact through avoided methane emissions at U.S. landfills and displacement of conventional natural gas.