Bonić, Ljiljana, 1965- Spasić, Dejan, 1968- Krstić, Bojan, 1972- Jovanović, Dejan S., 1981- Dmitrović, Veljko, 1977- srp https://phaidrani.ni.ac.rs/o:3334 cobiss:198644489 thesis:8852 [22], 342 lista 6422775 bytes In the modern era of socially responsible business, sustainable development is not a choice but a necessity. Moreover, traditional financial reporting, which provides quantitative (financial) data, is no longer sufficient to meet the information needs of investors, creditors, and other stakeholders. The importance of sustainability reporting is growing in parallel with the increasing emphasis on sustainable development, both at the macro and micro levels. In particular, Sustainable Development Report (SDR) is gaining importance in the field of environmental sustainability, as it includes data on greenhouse gas emissions, natural resource use, waste management, biodiversity protection and other aspects of environmental impact. In this way, corporate sustainability reporting takes place in parallel with the implementation of the Sustainable Development Goals (SDGs) defined by the 2030 Agenda. In this context, Green Intellectual Capital (GIC) emerges as a key resource that enhances companies' ability to respond to environmental challenges and improve their sustainability performance.Starting from the necessity of sustainability reporting and the need for both internal and external verification of information from SDR, this doctoral dissertation pursues multiple objectives. The main theoretical and empirical aims are: a) to review previous research on the concept of GIC in order to propose a new definition of GIC, based on SDR prepared in accordance with the GRI (Global Reporting Initiative) standards, and b) to develop a new model for measuring the efficiency of GIC, using the composite index methodology, which can be applied across all economic sectors, and will, in this dissertation, be applied to energy sector companies globally and in Serbia. These objectives are further supported by an analysis of the influence of GIC determinants and overall GIC, as well as the efficiency of both the determinants and total GIC, on the profitability of selected companies. The sample consists of 60 energy sector companies worldwide and in the Republic of Serbia, whose SDRs are available on the Responsibility Reports website, covering a four-year period (2020–2023).A specific empirical objective of this research is to identify national indicators of ecological sustainability in Serbia. These indicators will facilitate the monitoring of environmental protection activities in Serbia, in accordance with the requirements of the United Nations (UN) and aligned with the 2030 Agenda. Furthermore, the research will offer an original proposal for calculating the efficiency of the Ecological Sustainability Index (ESI) at the national level in Serbia. This result will be particularly significant, as the National Roadmap for Statistics in Serbia, recommended by the UN, has not yet been implemented. Biografija autora: list. 338-339Bibliografija: list. 313-335 Datum odbrane: 01.07.2026. Financial Statements Theory and Analysis, Audit 2026 Izveštavanje o održivom razvoju kao osnov za merenje efikasnosti zelenog intelektualnog kapitala u kompanijama energetskog sektora http://creativecommons.org/licenses/by-nc-nd/3.0/at/legalcode Milenović, Jovana, 1995- info:eu-repo/semantics/bachelorThesis