Power Efficiency Corporation designs, develops, markets, and sells solid state electrical devices that reduce energy consumption in alternating current induction motors. Its principal product includes the three phase Motor Efficiency Controller (MEC), which is used in industrial and commercial applications, such as rock crushers, granulators, and escalators. The company also offers a digital single phase MEC products that reduces energy consumption in electric motors by sensing and controlling the amount of energy the motor consumes. It serves end users, such as retail chains, hotels, airports, and transit systems, as well as mining, plastics, and manufacturing companies. The company sells its products through direct sales, original equipment manufacturers, resellers, distributors, and independent representatives primarily in the United States. Power Efficiency Corporation was incorporated in 1994 and is based in San Diego, California.