Why is tidal energy not likely to be a potential source of energy?

Why is tidal energy not likely to be a potential source of energy?

Answer:
The tidal energy is not likely to be a potential source of energy because:

  • Only few sites are available around the world which are suitable for building field barrages, and
  • The rise and fall of sea water during high and low tides is not enough to generate electricity on a large scale.