The paper analyzes the legal aspects of new concepts that could help ensure electricity access for all, regardless of market conditions. The Clean Energy Package for all Europeans introduced two types of energy communities: citizen energy communities, defined in Directive (EU) 2019/944, and renewable energy communities, defined in Directive (EU) 2018/2001. Both concepts are related to renewable energy sources. According to the definition, renewable sources are sources of energy that are constantly renewed by natural processes and are not exhaustible on human time scales. They are constantly renewed or almost infinitely available in the environment. These energy sources utilize natural resources such as sunlight, wind, water, geothermal energy, and biomass to produce energy. When introducing the concepts of citizen energy communities and renewable energy communities, states are given the opportunity to independently decide how to implement them into their legislation. This paper analyzes both types and highlights the issues related to their implementation and use in the Republic of Croatia. The purpose of this paper is to introduce the new concepts that are part of citizen energy, specifically the opportunities for citizens to participate either in the market or for their own needs to have a secure electricity supply in all situations. The author believes that by using renewable energy sources through these new concepts, everyone is given the chance to access electricity regardless of their financial status. Using renewable energy sources is a more environmentally friendly way because they do not generate greenhouse gas emissions and are less harmful to the environment. In fact, they provide opportunities for energy independence, job creation, and contribute to sustainable development.