The feasibility of generating electricity from jet-stream winds has been investigated. Analysis of published meteorological data indicates that annual average power densities approaching 20 kW/m**2 are available in the jet-stream altitudes over the complete west-east extent of Australia at a latitude of about 30 degree S. Computer-based optimization studies indicate that a 100 MW power station based on tethered aerodynamic generating platforms located at a jet-stream altitude would generate electricity at capital and operating costs that are competitive with other methods of electricity generation.