Harnessing energy refers to the process of capturing and utilizing various forms of energy for practical use. This can include renewable sources like solar energy, wind energy, and hydropower, as well as non-renewable sources such as coal and natural gas. The goal is to convert these energy sources into electricity or other usable forms to power homes, industries, and transportation. Technologies like solar panels, wind turbines, and hydroelectric dams play a crucial role in harnessing energy. By converting natural energy flows into usable power, these technologies help reduce reliance on fossil fuels and lower greenhouse gas emissions, contributing to a more sustainable future.