This paper presents a comprehensive analysis of carbon dioxide (CO2) emission dynamics from stationary and mobile sources in Ukraine, with a particular focus on the western region. The study examines the sectoral structure of emissions in order to identify the main contributors and long-term trends shaping the national carbon profile. Statistical and analytical methods are applied to assess changes in emission volumes over recent years and to determine the role of key economic sectors in overall greenhouse gas formation. The results indicate that more than 75% of total CO2 emissions in Ukraine are generated by the electricity and gas supply sector as well as by metallurgical production, confirming the dominant influence of energy-intensive industries on national emission levels. Within the western region, the highest emission volumes are observed in the Ivano-Frankivsk and Lviv oblasts, which is primarily attributed to the operation of fossil-fuel-based thermal power plants. These findings highlight the strong dependence of regional emission intensity on the structure of industrial activity and prevailing energy consumption patterns. The paper further evaluates regional specificities of emission formation and emphasizes the contribution of research institutions and higher education establishments to the development of a low-carbon economy. Particular attention is given to scientific activities aimed at advancing clean energy technologies, especially in the field of hydrogen energy. These efforts include the development of safe hydrogen production methods, innovative materials for hydrogen storage, and efficient transportation systems designed to enhance energy security and reduce reliance on conventional fossil fuels. A methodology for the experimental assessment of hydrogen embrittlement in carbon pipeline steels intended for hydrogen transport or its mixtures with natural gas is presented. In addition, the study presents research outcomes related to the integration of renewable energy sources into hybrid energy systems. The combination of wind and solar power with advanced energy storage technologies is analyzed as an effective strategy for optimizing the balance between electricity generation and consumption. The development of combined energy supply systems based on wind turbines, geothermal heating systems, and hybrid solar collectors is also considered a promising approach to increasing energy autonomy and improving system resilience. Overall, the results demonstrate that technological innovation supported by regional scientific capacity plays a crucial role in reducing carbon emissions and facilitating Ukraine’s transition toward sustainable, low-carbon development. The findings provide a scientific basis for evidence-based policymaking, contributing to the improvement of regional decarbonization strategies, investment priorities, and regulatory frameworks aligned with European climate objectives. 

low-carbon development, carbon dioxide emissions, renewable energy sources, clean energy, Western region of Ukraine