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- Where does tidal energy come from? 3 answers
Tidal power plants taps into the energy in the motion of the oceans due to the gravitational interaction between the earth and the moon, so much is clear to me. This question is about where would this energy be if it were not exploited by humans. Does it actually make a difference in the orbit of the moon, or would the same energy just become heat in the ocean though friction anyway? To rephrase, are we just redirecting the flow of energy going from the earth-moon orbit into the heating of the earth, or are we actually pulling on the moon to extract energy?