A system is provided for generating electricity from a fluid pressurized via a natural resource such as air compressed through a windmill, the compressed air stored in tanks by a windmill operated compressor, where the stored compressed air is then used to operate a turbine. The turbine has a nozzle configured to increase velocity of the compressed air entering the turbine. The rotor of the turbine has flat annular discs each set apart from one another by spacers to form a rotor stack with no central shaft. Permanent magnets are positioned radially about the end of the rotor stack. The magnets are arranged such that their poles radially alternate to interact with static wire coils positioned about the ends of the rotor stack to produce alternating current electricity. The compressed air enters the turbine at a tangent along the outer periphery of the rotor and exit axially through a central exhaust port.