A user, who decides to make use of cogeneration, is expected to continue using the same amounts of energy for heating, however, he will achieve economic savings, since higher efficiency results in lower costs of cogeneration compared to conventional technology. Savings depend on the ratio between the price of electric energy and the price of the fuel used in cogeneration. The larger the difference between these prices, the larger the savings and the shorter investment recovery time. In most cases of cogeneration installations, energy savings stand between 20 and 30%. Most of production processes also require reliable power supply. Cogeneration guarantees reliability and delivers other savings which are more difficult to evaluate in economic terms.