First published in Cleantech magazine, Volume 6, Issue 3. Copyright Cleantech Investor Ltd
In tropical regions, the difference in temperature between warm surface ocean waters and the depths beneath can be very great. Scientists at Hawaii’s HNEI, working with defence and technology company Lockheed Martin, want to take advantage of this fact to generate electricity and drinking water. They are among the few world experts on ocean thermal energy, whose exploitation depends on a difference of at least 20°C in sea temperatures and essentially converts solar radiation to electric power. Helped by HNEI, Lockheed Martin intends to build a 5-10MW pilot plant off the island of Oahu.