Hello, I am looking for some help in determining a potential energy generation project. Our open cast mine produces roughly 250 metric tonnes of raw rock per hour which is transported to the process area by an industrial monorail. The interesting thing is this monorail needs no power as the weight of the full carts travelling down is enough to carry the empty carts back to the top. The monorail is 80m long (40m down and 40m up) at a severe angle of approx. 30 degrees. I am thinking that with a geared drive shaft and chain I might be able to generate electricity as well through this process which would be amazing as there is a far from constant supply to the mine. Having read as many posts as I can and barely understanding them am I right that 550lbs = 1HP so my 250 tonnes would equal 1000HP? I understand there may be some loss here but even so that sounds brilliant. For design I am thinking installing a chain around the monorail that runs over a large gear that turns a drive shaft to power a motor. I think this would work but I would be delighted if you could say otherwise. I appreciate any help/advice that can be offered. EDIT. I thought it might be important. It takes between 55-65 seconds for one cycle. Amazingly I timed it a number of times and it always seems to be the same.