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

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

(i) The rise and fall of sea-water during high and low tide is not so high to generate electricity on a large-scale.
(ii) There are very few sites in the sea around the world that are suitable to build dams.
(iii) Start up cost to build a tidal energy plant is high.


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