Economic and regulatory mechanisms for ensuring the reliability of the reformed electric power industry were considered, including the calculation of the level of reliability and quality of services implemented by grid organizations, and the introduction of a differentiated tariff for electricity transmission services in terms of reliability, as well as the use of consumers of electricity with a controlled load as a reserve for the reliability of power systems. Proposed is a methodology for assessing damage to energy consumers in case of power outages. Attention is paid to the study of contractual relations in the wholesale and retail markets of electric energy as a regulator for managing the reliability of power supply to consumers.