Hydroelectric power is a form of renewable energy that harnesses the energy of flowing water to generate electricity. It typically involves the construction of a dam on a river, where water is stored in a reservoir. When released, the water flows through turbines, converting kinetic energy into electrical energy, which can then be distributed to homes and businesses. This method of energy production is not only efficient but also environmentally friendly, as it produces no direct emissions. Countries like Brazil and Canada rely heavily on hydroelectric power, making it a significant contributor to their energy portfolios and a key player in the global transition to sustainable energy sources.