Chevron Corp. revealed on May 11 that its wholly-owned subsidiary Chevron U.S.A. Inc. (Chevron) is investing an additional $20 million in the Adopt-a-Port initiative with California renewable natural gas (RNG) provider Clean Energy Fuels Corp.

Chevron has now invested a total of $28 million in the initiative, which provides truck operators—large fleets and owner-operators—serving the ports of Los Angeles and Long Beach with cleaner, carbon-negative RNG to reduce emissions.

In addition to providing funding for Adopt-a-Port, Chevron supplies RNG to Clean Energy stations near the ports. Chevron’s funding will allow truck operators to subsidize the cost of buying new or converting to RNG-powered trucks. Clean Energy, meanwhile, will manage the program, including offering fueling services for qualified truck operators.

Truck operators participating in the program, which supports the ports’ Clean Trucks Program and Clean Air Action Plan, agree to fuel up at the Clean Energy stations supplied with Chevron RNG. Truck operators and their import and export customers are expected to reduce greenhouse gas emissions under California’s Low Carbon Fuel Standard program while also reducing smog-forming NOx emissions by up to 98% compared to diesel trucks, helping local communities.

“Extending our agreement with Clean Energy demonstrates the strength of our partnership in providing low carbon fuels to our customers,” Andy Walz, Chevron president of Americas fuels and lubricants, said. “Along with other recent investments like Brightmark, CalBio, selling branded renewable diesel in San Diego County, and piloting hydrogen fueling stations and EV charging stations, Adopt-a-Port shows Chevron’s commitment to increasing renewables in support of our business in order to provide affordable, reliable and ever-cleaner energy to the market.”