The article reveals the problems of functioning of the fuel and energy complex of Ukraine under martial law. It was determined that Ukraine faced a crisis in the field of energy security due to Russian terrorist attacks on well infrastructure facilities, as well as the main strategies and mechanisms of response to crisis phenomena in the field of the fuel and energy complex, which are carried out through legislative and regulatory changes, were investigated; analyzed changes aimed at ensuring the security of supply and access of citizens to energy during wartime and preventing humanitarian crises. The article provides an overview of the adopted legislative changes in the field of the Ukrainian fuel and energy complex, defines the role of the Energy Community, which helps Ukraine to restore critical infrastructure objects faster and minimize damage from terrorist missile attacks, and also helps with the logistics of necessary materials to overcome crisis phenomena. It is noted that in order to become more independent in the field of fuel and energy complex in the future, Ukraine needs diversification, energy efficiency and fast renewable energy. From the point of view of diversification, Ukraine needs to increase its purchases of liquefied natural gas (LNG) from such suppliers as the USA, Qatar, Norway, African producers and others. Ukraine was able to pass the heating period 2022/2023. And this result was ensured by the heroic efforts of gas workers, heat workers, electricians, employees of the State Emergency Service, transport and logistics. The power industry held on, albeit at a high cost — unfortunately, there were casualties among repairmen, operating personnel, and engineering staff, not to mention the damaged and destroyed infrastructure At present, the global energy crisis is not over yet, therefore, it is extremely necessary to consolidate the efforts of the entire civilized world to avoid possible negative bifurcations in the further development of the situation, in particular, to prevent options and conditions under which this crisis can turn into a global political crisis Ukraine needs to take into account the energy development trends of the world and Europe and focus on decentralized and distributed "green" energy.