Investigation of the efficiency of hydro, wind, and solar power plants in Kyrgyzstan is important in the context of developing sustainable energy sources to ensure energy security and reduce environmental impact. The purpose of this study was to identify the most promising sources of renewable energy capable of ensuring the sustainable development of the energy sector. This study is a comparative analysis of the three main renewable energy sources – hydro, wind, and solar power plants – in the context of their use in Kyrgyzstan. Various aspects of the efficiency of each type of plant are considered, including resource availability, economic and environmental efficiency, and technical reliability. The advantages and limitations of each energy source are discussed in the context of the Kyrgyz economy and climate conditions. In particular, the focus is on the rich potential of water, wind and solar resources in the country, which opens up prospects for developing renewable energy. The environmental impacts of each type of power plant are also investigated, including ecological consequences and possible risks to local fauna and flora. The findings highlight the need for the integrated use of different types of power plants to ensure energy security and sustainability in Kyrgyzstan, given their combined advantages and limitations. Ultimately, it was concluded that the optimal approach to ensuring energy security and sustainability in Kyrgyzstan may be the integrated use of all three types of power plants. The study results can be used to develop a strategy for the energy development of Kyrgyzstan based on the optimal combination of hydro, wind, and solar energy to ensure a sustainable and environmentally friendly energy complex in the country