A method and apparatus for establishing a validated stable design for a stable electrical power system. An initial design for an electrical power system is established. The initial design for the electrical power system satisfies design requirements. The initial design for the electrical power system is simulated for a plurality of simulated operating conditions for the electrical power system to generate simulation data. Stability parameter requirements for a stable design for the electrical power system are established from the simulation data. A hardware implementation of the stable design for the electrical power system is tested to generate hardware testing data. The stable design for the electrical power system is validated using the hardware testing data to establish a validated stable design for the electrical power system.