The development of renewable energy in Southeast Asia has shown significant progress in recent years. Countries in the region, including Indonesia, Malaysia, Thailand and Vietnam, are starting to pursue ambitious targets for using clean energy sources. This is reinforced by the urgent need to reduce dependence on fossil fuels and address the challenge of climate change. One of the most developed renewable energy sources is solar energy. Thailand is a leader in solar panel installations with large solar farm projects. The Thai government has provided incentives for investment in solar technology, encouraging households and companies to switch to clean energy. In Indonesia, the potential for solar energy is still very large, with many areas having high exposure to sunlight throughout the year. Both the government and the private sector are now starting to invest in solar energy technology to answer the increasing energy needs. Wind energy is also experiencing rapid growth. Vietnam is one of the countries with the fastest development of wind energy in the region. With its long coastline, the country has many strategic locations for wind turbine installations. Wind power generation (PLTB) projects in Vietnam have attracted much attention from international investors, who see huge opportunities for sustainable economic growth. Indonesia, with more than 17,000 islands, has great potential for renewable energy based on bioenergy and hydroelectricity. Hydroelectric power projects have been successfully launched in various regions, especially in Sulawesi and Sumatra. However, the use of bioenergy is still lagging behind, even though biogas from agricultural and livestock waste can be a solution to meet local energy needs and reduce greenhouse gas emissions. Malaysia looks serious about developing renewable energy through the Feed-in Tariff (FiT) program which is profitable for renewable energy developers. The program led to a surge in solar, hydropower, and bioenergy projects in the country. This focus not only increases the supply of clean energy, but also creates new jobs and encourages local innovation. At the regional level, ASEAN has committed to achieving 23% use of renewable energy in the energy mix by 2025. The focus on collaboration between countries also supports the development of the infrastructure needed for renewable energy. Collaboration in research and development, as well as sharing technology, are strategies that are expected to accelerate the implementation of clean energy as a whole. Although rapid progress has been seen, major challenges remain. Factors such as inconsistent government policies, lack of investment, and technical barriers are barriers to wider adoption of renewable energy. However, with increasing awareness of climate change and support from the global community, Southeast Asia has a great opportunity to become a leader in the transition to sustainable energy. The importance of renewable energy in Southeast Asia is not only related to meeting energy needs, but also in terms of accelerating sustainable economic development and achieving global climate change targets. The initiatives taken by each country in the region will greatly impact the future of clean energy and societal well-being, positioning Southeast Asia as a key player in the global energy narrative.