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Natural Energy Lab of Hawaii
Driving south from the Kona International Airport toward Kailua-Kona, you'll spot a large mysterious group of buildings with an equally large and mysterious photovoltaic (solar) panel installation just inside its gate. Although it looks like some sort of top-secret military station, this is the site of the Natural Energy Lab of Hawaii, NELHA for short, where scientists, researchers, and entrepreneurs are developing and marketing everything from new uses for solar power to energy-efficient air-conditioning systems and environmentally friendly aquaculture techniques. Visitors are welcome at the lab, and there are 1½-hour tours for those interested in learning more about the experiments being conducted. www.friendsofnelha.org. COST: $8 donation for tours. OPEN: Tours weekdays at 10 am.