2023-12-01 00:00:00 Motor Efficiency (η) Calculation Tool Motor Efficiency (η) Calculation Tool is a software developed under AI fired ENERGY ENGINE Expert System Series libraries developed by aessoft which will be the base for many applications for Energy, Power and Electrical Industry. Motor Efficiency (η) Calculation Tool, a mobile app, helps in calculating motor efficiency as per new IEC classification standards (IEC 60034-30-1).