SoCalGas Connects First Landfill RNG Facility to Pipeline System
SoCalGas has connected its first landfill-based renewable natural gas facility to its pipeline system, bringing RNG from WM’s Simi Valley landfill into commercial service.
(P&GJ) — Southern California Gas Company has begun accepting renewable natural gas (RNG) from a landfill-based production facility into its pipeline system, marking the first time the utility has interconnected a landfill RNG project with its network.
The interconnection links the new WM Simi Valley RNG Facility to SoCalGas’ pipeline system. The facility captures landfill gas from WM’s Simi Valley Landfill in Southern California and processes it into pipeline-quality RNG for delivery into the utility’s system. The RNG can be allocated for use in heavy-duty compressed natural gas vehicles as well as for residential and commercial consumption.
“This is a significant milestone in our journey to expand the use of renewable natural gas,” said Jawaad Malik, senior vice president of strategy and sustainability at SoCalGas. “By working with WM to bring this project online, we’re supporting operations that capture methane and convert it into renewable fuel—helping reduce greenhouse gas emissions, advance California’s climate goals, and deliver reliable energy to our customers.”
WM has invested more than $100 million to develop the Simi Valley facility, which is expected to produce about 2.2 million MMBtu of RNG annually. The 30,000-square-foot plant is one of the largest RNG facilities in WM’s portfolio and represents the company’s first RNG project in California.
“WM is proud to collaborate with SoCalGas to deliver a renewable fuel source to communities and businesses,” said Tara Hemmer, chief sustainability officer at WM. “This new RNG facility is part of WM’s broader commitment to advancing circularity and providing the innovative solutions our customers need to thrive.”
SoCalGas said the project aligns with its goal of replacing 20% of traditional natural gas deliveries to core customers with renewable sources by 2030. RNG accounted for about 5.5% of gas delivered to core customers in 2024.
The utility currently receives RNG from 10 production facilities, including eight dairy cluster projects and two green and food waste facilities. Industrywide, 505 RNG facilities were operating in North America as of June 2025, according to the RNG Coalition.