ZEMU Hydrogen Train Launch – US Rail Innovation

Zero-emission ZEMU train debuts on Metrolink this Saturday, offering clean rides on the Arrow Corridor.

ZEMU Hydrogen Train Launch – US Rail Innovation
September 13, 2025 1:01 am
A+
A-

“`html

Introduction

The Zero Emission Multiple Unit (ZEMU) hybrid hydrogen-battery passenger train will launch this Saturday, offering zero-emission, zero-fare rides along the Arrow Corridor, departing from the Metrolink San Bernardino Downtown Station at 10:32 am. This marks a significant advancement in sustainable rail transport.

Service Launch

The ZEMU train, the first hydrogen-powered passenger train in the United States, is scheduled to commence service on Metrolink this Saturday, September 13. The train will operate along the nine-mile Arrow Corridor of the San Bernardino Line throughout the day.

ZEMU Technology and Design

The ZEMU, which stands for Zero Emission Multiple Unit, is a hybrid hydrogen fuel cell-battery train developed by the San Bernardino County Transportation Authority (SBCTA) over more than a decade. Built by Swiss manufacturer Stadler, the train features a design with two passenger cars and a central power pack. The exterior design includes a blue and white water-vapor-themed wrap. The train arrived in San Bernardino in June 2024.

Testing and Compliance

The ZEMU has undergone extensive testing to ensure compliance with Metrolink systems and Federal Railroad Administration (FRA) standards. The train meets FRA requirements and produces only water vapor as emissions, offering a clean alternative to diesel-powered trains.

SBCTA Recognition and Future Impact

In August 2024, the California State Transportation Agency recognized SBCTA for its work. Public rides will be available from any Arrow Corridor station. Schedules can be found at Metrolinktrains.com.

Last June 2025, we published an article about Renfe building a cutting-edge maintenance hub in Aranjuez, boosting Cercanías efficiency. Click here to read – Future of Rail: Renfe’s Railway Technology Hub, Aranjuez: Essential Guide

Conclusion

The ZEMU train will begin service on Metrolink this Saturday, September 13, offering zero-emission rides on the Arrow Corridor. The train was developed by the San Bernardino County Transportation Authority (SBCTA) and built by Stadler. The California State Transportation Agency recognized SBCTA’s work in August 2024.

Company Summary

San Bernardino County Transportation Authority (SBCTA): Developed the ZEMU hybrid hydrogen fuel cell-battery train.

Metrolink: The operator of the passenger train service.

Stadler: The Swiss manufacturer of the ZEMU train.

“`