Advertisement Brightmark LLC and Chevron U.S.A. Inc. have announced the expansion of their joint venture, Brightmark RNG Holdings LLC, to own projects across the US to produce and market dairy biomethane, a renewable natural gas (RNG). Brightmark RNG Holdings LLC’s subsidiaries currently own RNG projects in Western New York, Western Michigan, Central Florida and South Dakota, US. Additional equity investments by each company in the joint venture will fund construction of infrastructure and commercial operation of five new dairy biomethane projects in Michigan and Arizona, US. Chevron will purchase RNG produced from these projects and market the volumes for use in vehicles operating on compressed natural gas.