Natural Energy Laboratory of Hawaii Authority References Natural Energy Laboratory of Hawaii Authority Hawaiian state agency Ask Anything Homework Help Also known as: NELHA Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: ocean thermal energy conversionBy 1999 the Natural Energy Laboratory of Hawaii Authority (NELHA) had created and tested a 250-kilowatt plant. Read MoreBy 1999 the Natural Energy Laboratory of Hawaii Authority (NELHA) had created and tested a 250-kilowatt plant. Read More