EcoWatch: Hawaii is definitely ahead of the curve when it comes to renewable energy. In June, the Aloha state became the first state to mandate that all of its electricity come from renewable sources no later than 2045. Along with other islands, its charging ahead with wind, solar and smart grid systems. But now, the state is home to the first fully closed-cycle Ocean Thermal Energy Conversion (OTEC) plant in the U.S.
OTEC is "a process that can produce electricity by using the temperature difference between...