Discuss some of the limitations of the use of tidal energy.

One of the limitations include cost, of setup, installation and maintenance. But more sublty there are undetermined envronmental implications, and issues with the energy storage and distribution due to the fact that tidal power stations cureently need to be situated within 1km of land.

 This question I feel could be useful as it draws on other renewable energy knowledge to consider the implications of using this slightly more unfamiliar mode energy production.