For example, in 1974, the United States government built the Natural Energy Laboratory of Hawaii Authority (NELHA) at Keahole Point on the Kona Coast of Hawaii, which it uses as generator the electricity through the changing temperature of the ocean. Hawaii is best positioned to build the OTEC device, thanks to its warm surface water, access to very deep seabed, extremely cold water and high electricity costs. The laboratory has become a leader in research on OTEC (Electric Power Monthly) technology,