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A new subway development in Warsaw, Poland, captures the braking energy from its metro cars and stores it to boost another train’s acceleration to the next station.
Regenerative braking for trains is picking up steam from the West Coast of the USA to the East, and also in Europe. The energy recovered from a Polish metro car as it decelerate is enough to power a 60 watt light bulb for more than a week. This energy help to accelerate another train on the same section of the line. The key technologies are substations and an energy storage system, based on double-layer super-capacitors, all of which are being supplied by ABB.
