Greenhouse gases are rapidly increasing in the earth’s atmosphere as a result of human activities. Many scientists already conclude that the increase in carbon dioxide, methane, and other greenhouse gases is causing global warming. This increase in greenhouse gases would contribute to even more global warming and climate change during this century. However, renewable energy sources improve energy efficiency while also allowing countries to meet their climate change targets. Hence, a prominent solution for this problem is to use renewable energy to replace fossil fuel burning. In this light, this paper focuses on the different forms of renewable energy, the importance of renewable energy in reducing emissions, the potential for pollutants emission reduction in Sri Lanka as a developing nation.