Perpetual Energy Wasting Machine is a rope and pulley mechanism, installed in the staircase of the WRO Art Center. The mechanism connects the sliding doors of the elevator in one floor with the elevator call button on another floor. Operating in two directions on the first and on the second floor, the contraption automatically moves the elevator cabin in an infinite loop between those two levels. The installation moves the elevator in recurring cycles. As this is an hydraulic elevator, and as the cabin´s mass is not equalized by a counterweight, only the movement up consumes electricity. Estimating that the empty elevator cabin has a mass of 350 Kilograms, the wasted energy is about 11.8 Kilojoules per cycle. A modified printing calculator inside the elevator cabin keeps track of the wasted energy, automatically adding up 5.9 Kilojoules for each half cycle. The results of this symbolic calculation – which does neither regard energy loss by friction, nor a heavier cabin due to possible passengers – go straight to a waste bin, located beneath the printing calculator.