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Wayside Energy Storage

Towards Carbon Neutrality

The transportation sector remains at the origin of a significant proportion of today's carbon emissions. Promoting public transit and increasing its energy efficiency are key to drastically reducing this sector's environmental impact. 

Cities committing to ambitious carbon emission reduction targets need smart, sustainable solutions to meet those targets.

Regenerative Braking for Metros and Trams

Wayside energy storage for rail is electrical energy storage which is typically located in, or close to a rail traction power substation. Decelerating electric vehicles can recover energy which is transmitted to the energy storage system via the overhead power lines or third rail. This recovered energy is used by an accelerating vehicle in the proximity of the traction power substation, reducing the net energy usage.

Whilst the concept of using recovered energy to accelerate metros and trams has been used previously, without storage it was limited to concurrent operation, where regen and load are occurring simultaneously. This is only economical for a short headway.

Our solution

Teraloop provides the hardware energy storage component necessary to perform this regenerative braking. Our compact, durable and efficient solution can service a station over more than 25 years and is designed to service the numerous daily cycles required.

Flywheels are also commonly used to rectify power quality and thus can further contribute to voltage control in aging systems.