Abstract The paper considers the role of the development of corporate social responsibility of Ukrainian nuclear energy producers to ensure the effective functioning of this industry. National sustainable development in all social and economic spheres depends heavily on effective employee management where safety plays the main role. The purpose of the article is to evaluate the development of corporate social responsibility in NNEGC “Energoatom” and identify reserves for improving enterprise employee management. To achieve this goal, the method of SPACE analysis has been modified, because this tool is traditionally used as a method of strategic management. A system of 23 indicators has been developed to evaluate the level of corporate social responsibility in NNEGC Energoatom. Four groups of factors were identified, each of them was assessed by a set of relevant indicators. The article covers the activities of the enterprise during 2016-2020. On the basis of mathematical calculations, the SPACE-analysis matrix is constructed and the strategy of corporate social responsibility development is defined. The evaluation of the level of corporate social responsibility in NNEGC Energoatom indicates a high level of CSR. Despite the effective corporate social responsibility policy in NNEGC Energoatom, some problems still exist. The analysis allowed identifying the ways to improve the corporate social responsibility of nuclear energy producers, particularly to ensure a competitive salary, increase the level of occupational safety, improve the internal communication system. The practical value of the analysis lies in the fact that the modified method of SPACE-analysis can be used to evaluate the corporate social responsibility in different types of enterprises with different aims and objectives.