The aim of the project entitled Reducing energy performance of OSTROJ a.s. is to reduce energy consumption by reducing the energy performance of the building and production processes. The subject of the project is the acquisition of a new air-conditioning control system in the production hall 1Yh Tool shop, the acquisition of a new compressor for the production of compressed air, the acquisition of new bridge cranes and the modernisation of the lighting of the production hall 1Yh Tool shop.