San Bernardino, California, is making history with the arrival of the Zero-Emission Multiple Unit (Zemu), North America’s first hydrogen-powered, zero-emissions passenger train that meets Federal Railroad Administration (FRA) standards. Unveiled recently, the $20 million train is set to begin operations early next year, running on a 9-mile line between Redlands and San Bernardino known as the Arrow Corridor.
Zemu’s innovative technology combines a hydrogen fuel cell and battery system, producing only water vapor as a byproduct, a significant improvement for a region plagued by some of the worst air quality in the nation. The train’s quiet operation and smoother ride offer an enhanced passenger experience, thanks to its lightweight aluminum construction.
The development of Zemu marks a milestone in U.S. clean energy transportation, positioning San Bernardino County as a leader in green innovation. “What we have done with Zemu is transformational,” said Ray Marquez, president of the San Bernardino County Transit Authority (SBCTA), highlighting the project’s significance in advancing clean passenger rail technology.
This project has been years in the making, driven by the region’s poor air quality and the need to reduce road congestion caused by heavy truck traffic from nearby ports. SBCTA’s collaboration with Swiss rail manufacturer Stadler Inc. has culminated in a train that not only meets stringent safety standards but also offers a zero-emission alternative to traditional diesel-powered trains.
While the Zemu will initially serve a modest number of passengers, its potential extends far beyond the Arrow Corridor. California’s Department of Transportation (Caltrans) has already ordered additional hydrogen-powered trains for future use, signaling a broader adoption of this technology across the state.
However, the transition to hydrogen-powered rail faces challenges, including the need for significant infrastructure investment and concerns about the efficiency of hydrogen as a fuel source. Despite these hurdles, California is pushing forward with its commitment to clean energy, backed by substantial state and federal funding. The Zemu project represents a promising step toward a greener future for the state’s transportation system.