Converting the thermal energy of the oceans

OTEC (Ocean Thermal Energy Conversion) technologies convert the thermal energy contained in the oceans into electricity using the difference in temperature between the surface of the water, which is hot, and the cold at the bottom of the ocean. The downside of this technology is that it is not yet efficient enough to be used as the main source of power generation.The largest collector of solar energy found on earth is the ocean. The oceans absorb enough energy from the sun every day comparable to the thermal energy contained in 250 trillion barrels of oil.