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The PowerBuoy is about 150 feet from top to bottom with most of the structure under water, a design said to minimize the environmental impact.
Ocean Renewable Power Company's underwater tide turbine has surpassed power supply predictions, and the company expects a commercial grid connection as soon as 2011.
Ocean Power Technology is in final-stage agreements to build wave energy project off Oregon's coast to power 1,000 homes.
New Jersey-based Ocean Power Technologies seeks to harness the mighty churn and swell of the seas for the U.S. Navy in Oahu.
Carbon trading in U.S. begins, a hydrogen car reality check, range of solar technologies dominate this quarter's VC investments, Dell's LED screen make laptops greener, stolen solar panels a growing problem.