Back into the power grid. Quote: When regenerative braking is employed, the current in the electric motors is reversed, slowing down the train. At the same tim

Back into the power grid. Quote: When regenerative braking is employed, the current in the electric motors is reversed, slowing down the train. At the same time, the electro motors generate electricity to be returned to the power distribution system https://www.ctc-n.org/technologies/regenerative-braking-trains https://www.ctc-n.org/technologies/regenerative-braking-trai...