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Low view of a Caltrain platform with a train parked at it with passengers nearby.

News•by News/Media Release•October 9, 2025

Caltrain's Electric Trains Now Earn Money While Powering the Grid

Due to a new state policy and clean energy partnerships, Caltrain will be compensated for the renewable electricity its trains generate through regenerative braking.

News•by Staff•July 3, 2019

Rail tunnel heat could be captured to warm homes, research says

Heat from the tunnel would cover up to 80% of the heating needs of local apartments in Lausanne, Switzerland throughout winter.

News•by Staff•October 19, 2018

NY MTA plans smart battery pilot at subway power substation

This approach utilizes the electricity produced by the subway’s regenerative braking.

News•by Staff•July 27, 2016

Maxwell Tech to supply energy storage for Beijing subway

Subway system will be the first project in Maxwell's multi-year partnership with China's largest rail vehicle manufacturer, China Railway Rolling Stock Corp.

Transit Dispatches•by Heather Redfern•July 13, 2012

Making public transit greener

How do you make public transit even more environmentally-friendly and efficient for the 21st Century? SEPTA, in partnership with a Philadelphia smart grid company is bringing the regenerative braking energy technology long used by hybrid-electric vehicles to its Market-Frankford Line elevated trains.