Clean energy technologies refer to methods and systems that generate energy with minimal environmental impact. These technologies primarily harness renewable resources such as solar, wind, hydropower, and biomass. By utilizing these natural sources, clean energy reduces greenhouse gas emissions and helps combat climate change. In addition to generating energy, clean energy technologies also include energy efficiency measures, such as smart grids and energy storage systems. These innovations optimize energy use and ensure a reliable supply, making it easier for homes and businesses to transition away from fossil fuels and towards a more sustainable energy future.