SKM Systems Analysis, Inc. is a California-based software company founded in 1972 that develops power system analysis and design software for electrical engineers. Its Power*Tools for Windows (PTW) suite covers fault calculations, load flow, protective device coordination, arc flash hazard analysis, motor starting, transient stability, harmonics, reliability, grounding, DC systems and cable analysis. Used in commercial, industrial, institutional, utility and petrochemical facilities worldwide, the company also provides technical support by electrical engineers, hands-on training, a mobile field data collection app with MySKM cloud, and a global distributor network.