This paper analyzes the Call for Proposals: Increasing energy efficiency and use of renewable energy sources in the service sector under reference number KK.04.1.2.01. in order to identify problems that arise in the implementation of projects both from the institutional side and from the side of the beneficiaries. The analysis within this paper showed that the previous projects from the said Call have mostly been successfully implemented or are at the end of implementation, and good project preparation and experienced consultants are one of the main factors of successful withdrawal of funds. Based on the conducted empirical research, measures and activities have been proposed that can contribute to a more successful implementation of projects with the aim of maximizing the use of grants. In the new programming period 2021-2027 the challenging economic circumstances caused by the COVID crisis will have a significant impact on the economy as a whole, and especially on the tourism sector, and grants will be even more important. Given the large bureaucratic obstacles in applying for and implementing calls and the lack of educated staff both from the institutional side and from users and consultants, the paper proposes measures for a new period of further calls for tourism and trade. Simplification of the application and selection and implementation process, strengthening of institutional capacities and work on successful communication between intermediary bodies, beneficiaries and consultants, as well as active participation of institutions in beneficiary education can significantly contribute to greater withdrawal from ESI funds. This analysis represents a broader framework of research that illustrates the previous conclusions on the example of a specific case study (Hotel Didin konak, Kopačevo). This is a successful example of the construction of a photovoltaic power plant that is used to meet the electricity needs of hotels and restaurants with the possibility of handing over the surplus electricity produced to HEP-ODS.