SamTrans is significantly advancing its transition to a zero-emission fleet, committing substantial resources to hydrogen fuel cell electric buses and associated infrastructure. The agency currently operates 10 40-foot fuel cell electric buses from New Flyers, which have accumulated approximately 21,000 miles between March and April 2025, according to Zhiming Fan, director of infrastructure and capital projects. These initial vehicles are supported by an interim portable hydrogen fueling station acquired from Plug Power.

In a pivotal move, the SamTrans board of directors recently approved a $17 million contract for the construction of a permanent hydrogen fueling station at its North Base facility in South San Francisco. This project, which also includes an additional $1.7 million for three years of maintenance services, is predominantly funded through the ARCHES program, a state and federal initiative supporting hydrogen projects. The new station is designed to fuel the agency's planned fleet of 118 hydrogen fuel cell buses and is projected to be operational by 2027.

SamTrans's strategic emphasis on hydrogen contrasts with the varied approaches of other Bay Area transit agencies, many of whom lean more heavily on battery-electric or diesel-electric hybrid solutions, such as San Francisco's Muni. This decision positions SamTrans as a notable proponent of hydrogen technology for public transit.

Despite the agency's commitment, the hydrogen strategy has drawn scrutiny. During a recent board meeting, public commenters, including Adrian Brandt, a member of the SamTrans Citizens Advisory Committee, voiced concerns regarding hydrogen's potential dependence on fossil fuel sources, its greenhouse warming potential, and higher maintenance costs compared to other zero-emission alternatives. Brandt specifically cautioned against a hydrogen-centric strategy, citing recent revelations about hydrogen's potency as a greenhouse gas.

Conversely, SamTrans leadership remains steadfast in its vision. Jeff Gee, chair of the SamTrans board of directors, affirmed the agency's dedication in a press release, stating, “Every step we take toward a zero-emission fleet is a step toward cleaner air and healthier communities. This fueling station enables us to scale up responsibly while ensuring reliable service for our riders today and for future generations. The Board is committed to positioning SamTrans as a regional leader in clean transportation.” This investment underscores SamTrans's resolve to meet regional and state climate objectives by phasing out its diesel fleet.