A bucket is filled with water from a water tray that has been filled with water from a water tank. The water tray signals the water tank when it needs water. When a bucket reaches a certain position, the unit bar tips the water tray and the bucket receives the tray's water. The weight of the filled bucket causes it to drop to the water sewer below. The bucket dumps the water into the sewer. The water is pumped from the sewer to the water tank. The two units are attached by a sprocket cable at the unit bar, and the cable travels over three pulley wheels. The units are separated by a rack. The units have a generator mounted on a unit bar. The movement of the bar and the motor along rack generates energy.