SOLUTION

Both kinetic and potential energy of sea water are utilized in tidal power plants.

• Kinetic Energy: This is derived from the movement of water as tides rise and fall. Tidal turbines capture this kinetic energy from the fast-flowing tidal streams.
• Potential Energy: This comes from the difference in water levels between high tide and low tide. Tidal barrages utilize this potential energy by allowing water to flow through turbines as it moves from a higher elevation (high tide) to a lower elevation (low tide).

Thus, tidal power harnesses both forms of energy to generate electricity.