The year 2019 brought significant changes in contracting energy services in the public sector. The new legislative framework makes it possible to procure and implement measures to improve the energy efficiency of public buildings and property without affecting public debt. These measures include, in addition to the purchase of new technologies, the introduction of various energy management systems and other measures to ensure the efficient operation of the energy economy. The content of the lecture will be the presentation of possibilities, conditions and procedures for the procurement of these commodities in the form of guaranteed energy service.