Several countries believe that energy can be produced from ocean thermal gradients. They have been evaluating the use of the large thermal differences of tropical oceans for the production of energy. With the thermal heat in the water they want to produce steam that can spin turbines, for the production of electricity. The thermal energy in the oceans would be converted in conversion plants, which would be anchored to the bottom of the ocean. The technology of energy production from heat stored in water has not yet been applied, as it is still in the research phase. Analysts believe that this technology will not have enough economic value to compete with other energy production technologies.