The Bow Tower is a 58 storey building scheduled to be completed in September 2012. The building will now be the tallest building in Calgary and one of the tallest in Canada outside of the CN Tower. It contains a total of 5400 kW worth of backup power. Even though the building is yet to be completed the Generators were placed early in the construction process and back-up both life safety and tenant systems. 22 ATS help control load shedding and permissive functions.