The article explores the issue of evaluating the outcomes of implementing ESG (Environmental, Social, and Governance) projects across various economic sectors. It analyzes the main problems organizations face when implementing ESG initiatives, including inadequate methodological approaches to performance evaluation and the diversity of standards. The primary aspects of ESG projects' impact on environmental, social, and economic development are characterized. A comprehensive methodology for assessing the results of ESG initiatives has been developed, considering key performance indicators (KPIs) across different areas of activity. Recommendations are proposed to improve the efficiency of ESG project implementation, contributing to the sustainable development of enterprises. The study delves into the various challenges that organizations encounter, such as high implementation costs, resistance to change within the organization, and the lack of necessary experience and expertise. Additionally, it addresses the uncertainty regarding the impact of ESG projects on companies' financial performance. By calculating a composite ESG index for agro-industrial enterprises in Ukraine, the research allows for comparing the effectiveness of ESG project implementation and identifying leaders and laggards in the field of sustainable development. The study also underscores the role of independent experts in conducting external audits of results and obtaining certification from recognized organizations to confirm compliance with ESG standards. Continuous improvement of ESG projects involves implementing mechanisms for regular monitoring and updating goals and KPIs in response to changes in the external environment and internal processes. The practical implications of this research are significant for business leaders, investors, policymakers, and all stakeholders aiming to enhance responsibility and sustainability in their operations. The insights provided in this article can help organizations improve the added value created by ESG projects and identify steps necessary to achieve maximum results.