Veolia Group will deploy its MemGas system to purify biogas from the plant’s digestion process into biomethane, a renewable natural gas suitable for injection into Pacific Gas & Electric’s grid. The project, set to be operational by June 2027, will utilize 100% of the biogas produced, generating enough energy to offset the equivalent of 3,800 homes’ natural gas needs, approximately 74 MW annually. This initiative supports sustainable energy production and reduces greenhouse gas emissions by Daniela Brandao, Senior Project Manager at SFPUC, stated: “This project fulfills our commitments for beneficial use of biogas generated at the Southeast Treatment Plant, supports California’s state goals for in-state production and distribution of renewable natural gas, and aligns with our city’s sustainability objectives. We are excited to see the positive impact this project will have on our community and the environment!”
Anne Le Guennec, Senior Executive Vice President for Worldwide Water Technologies at Veolia, said: “This transformative project showcases how cities can create truly circular systems that not only meet performance criteria but generate clean, renewable energy from what was once considered waste. The SFPUC exemplifies environmental leadership by creating a sustainable energy source right in their backyard, setting a powerful example for cities worldwide.”
The Southeast Treatment Plant handles about 80% of San Francisco’s stormwater and wastewater, processing an average of 45 million gallons (170,300 cubic meters) daily during dry weather. The upgrade will capture biogas from wastewater treatment, refining it through advanced gas conditioning and separation processes. This will produce a reliable renewable energy source while cutting emissions by 31,000 metric tons of CO2e annually.
The project highlights advancements in sustainable infrastructure, aligning with Veolia’s strategy to promote decarbonization and circular solutions. By transforming waste into renewable energy, the initiative demonstrates how innovative technology can drive environmental progress and support community sustainability goals in San Francisco.
