Great interest in the latest edition of the RENEXPO® Poland trade fair proved that such events are definitely desired in the Polish RES industry. VI International Trade Fair for Renewable Energy and Energy Efficiency took place in Ocotber in Warsaw. A total of 103 exhibitors took part, presenting their offerings in eight sectors: bioenergy (wood energy, biomass, biogas, biofuels), wind energy, CHP-cogeneration, energy-efficient construction and building renovation, hydropower, heat pumps, geothermal and solar energy.