Deep Ocean Power Philippines (DOPP), a subsidiary of US based Deep Ocean Power has been granted 36 permits by the department of energy (DOE) to explore possible sites in the Philippines that can be harnessed for ocean thermal energy conversion.

Ocean Thermal Energy Conversion (OTEC) is different from wave energy as it uses heat difference as opposed to the latters use of tidal motion and moving currents. The principle of Ocean thermal energy works by using a heat engine (usually using a refrigerant fluid) that will harness the energy from the temperature difference between the hotter surface waters of the ocean versus the cooler deeper waters.
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