A CAD package has been developed for power system analysis. It integrates the simulation programs under a single database, and has the capability to switch between system editing, simulation and result analysis without leaving the environment. It can perform load flow, fault and harmonic analysis simulations. Power systems can be graphically constructed, modified, stored and any of the above simulations run at any time using an easy to use CAD drawing and data editing module. The package is suitable for educational and industrial use.