The present paper assesses the operation of a geothermal heat plant cooperating with an absorption heat pump. The heat plant system is presented in detail together with parameters characterizing its work: the most important relations used in calculations, results of calculations, and conclusions resulting from the accomplished analysis. Calculations have been presented for a heat plant localized in the first climatic zone with accounts of different temperatures of extracted geothermal water. Additionally, the analysis considered is variation of parameters characteristic of heat recipients such as supply and return temperature, type and participation of particular heat receivers. Such an approach enabled us to determine how the considered parameters influence the effectiveness of operation of the considered heat plant installation. In the present paper neither costs nor economic analysis was carried out for such types of installations. Thes will be topics for future activities.