Clean energy technologies refer to methods and systems that generate energy with minimal environmental impact. These technologies often harness renewable resources such as solar energy, wind energy, and hydropower. By using these sustainable sources, clean energy reduces greenhouse gas emissions and helps combat climate change. Additionally, clean energy technologies include innovations like energy storage systems and smart grids, which improve energy efficiency and reliability. These advancements enable better management of energy resources, making it easier to integrate renewable sources into existing power systems. Overall, clean energy technologies play a crucial role in creating a sustainable future.