The Southeastern Pennsylvania Transportation Authority is testing out energy-saving technology on its train lines.

Given the amount of power expended for physical operations like braking, there’s a lot to be gained by capturing this wasted energy and converting it back into electricity for further use within closed system. This is the basic premise behind regenerative braking, a technology already being utilized by electric and hybrid vehicles. Now thanks to a pilot project being launched by the Southeastern Pennsylvania Transportation Authority (SEPTA), this same thinking is being applied on a much larger scale.

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