Considering the rise of fossil fuel prices, as well as the increasing needs to implement measures for environmental preservation, there is a growing awareness in the Croatian and global economy on importance of using energy from renewable sources. Most countries, including Croatia, have a goal to increase the share of renewable energy in their energy balance, with the main reasons being to reduce negative impact on the environment and reduce dependence on fossil fuels. The implementation of energy systems that directly or indirectly use solar energy is of great importance in achieving this goal. The Republic of Croatia has significant potential for using energy from renewable sources, and increasing the share of such sources would contribute to energy independence and reducing harmful emissions. This paper provides an overview of technologies for generating electricity from renewable sources, as well as individual and total contributions of renewable sources to the energy balance. The availability and cost-effectiveness of renewable energy sources are greatly influenced by geographical features and climate conditions. Electricity from renewable sources in Croatia is mainly generated from hydroelectric power plants, wind turbines, and solar photovoltaic power plants, while other renewable sources have a negligible share or are not used at all. This paper analyze the individual and total contributions of hydroelectric power plants, wind turbines, and solar photovoltaic power plants to the energy balance over a five-year period. Plans for generating more electricity from renewable sources in Croatia are also presented, and measures leading to sustainable development that will be taken are also presented. The analysis might provide guidelines for increasing the capacity for generating electricity from renewable sources.