One way would be using a funicular: The "train" is just the weight, pulled up/lowered on a cable that's connected to a motor-generator at the top. Would also m

One way would be using a funicular: The "train" is just the weight, pulled up/lowered on a cable that's connected to a motor-generator at the top. Would also make it cheaper to build extra wagons, with a storage yard at the top and bottom.