Machines that transform kinetic wind energy into electricity have too large sizes because of low density of air. The authors propose a kind of floating power aggregate, where wind flow energy is converted into water flow energy that allows reducing dimensions of an energy transformer. The authors created a simulator of a wind-driven machine that transformed energy of both environs and performed experiments. The simulator was made as a catamaran that performed cyclical movements along an arc of a ring within the designated angular interval. The article presents the results of these researches.