Tidal energy is a form of renewable energy that harnesses the power of the tides to generate electricity. It is a form of hydropower that relies on the rise and fall of ocean tides to turn turbines that generate electricity. It is a relatively new form of energy that has the potential to provide a significant amount of renewable energy to coastal areas. In addition, tidal energy is a predictable and reliable source of energy, making it a more dependable form of renewable energy than wind or solar.