By definition, tidal energy is renewable - you aren't “extracting” finite resources from the earth in order to generate electricity from it. So why don't we see use of tidal generation in the overall renewable mix? read more
Tidal energy is renewable The energy of the tides will not go away if we use their power to generate electricity. It is renewable in the sense that we cannot take away the source of the energy by using them (unlike fossil fuels, of which there is a limited supply. read more
Tidal energy is renewable in the sense that it comes natural processes that are beyond our control. Tidal energy is drawn from the orbital energy of the Earth-Moon system. Because of the tidal friction, the Moon is slowly getting further away, so it will not last forever. But like the Sun, it will last for a very long time. read more