A film about the problems of wind energy in our country. Employees of the laboratory for the study of environmentally friendly engines, headed by Professor Kryuchkov, demonstrate on ship models samples of industrial sails, which they are developing for modern ships. Animation depicting the strength of the wind during a storm at sea, during a sandstorm in the desert. Photos of scientists studying wind energy: N. Krasovsky, N. Zhukovsky, G. Sabinov, Vetchinkin, A. Ufimtsev. Testing of wind turbines for generating electricity in Nikolaev, Kiev, Novorossiysk, Tallinn, Riga. Harvesting vegetables in a greenhouse heated by the energy generated by a wind turbine.