An ultra-efficient turbo-compression cooling system links an organic Rankine power cycle and a vapor compression cooling cycle using a turbine and compressor that shares a single shaft and further linked to an evaporative condenser. The power cycle implements a waste heat exchanger configured to evaporate a working fluid and a turbine configured to receive the evaporated working fluid. The turbine has a plurality of vanes disposed around a central shaft and configured to rotate as the working fluid expands to a lower pressure within the turbine. An evaporative condenser then condenses the working fluid to a saturated liquid and a mechanical pump pumps the saturated liquid to reenter the waste heat waste heat exchanger. The cooling cycle implements a compressor configured to increase the pressure of the working fluid, with the evaporative condenser (shared with the power cycle) configured to condense the working fluid to a saturated liquid upon exiting the compressor, an expansion valve wherein the working fluid expands to a lower pressure, and an evaporator rejecting heat from a circulating fluid to the working fluid, thereby cooling the circulating fluid.