A Lifetime Of Efficiency: Improving Motor Specification To Boost The Efficiency Of Submersible Wastewater Pumps Electric motors in industrial applications, including those used in pumping systems, consume 30 to 40 percent of the world’s electricity. For the past two decades, equipment manufacturers, users and regulators have been tackling excessive energy consumption. This has led to the development of higher efficiency standards for motors and the adoption of variable speed drive (VSD) technologies to better match energy use and demand. For motors designed for running in continuous duty ap...