The ocean-current technology developer Ocean Renewable Power Company (ORPC) has been working on a pilot version of its cross-flow turbine since 2004. Over the last six years, the company has learned a number of important lessons about the difficulties of deploying energy technologies in the marine environment. ORPC's 30-kw unit, which was installed in the Bay of Fundy off the coast of Maine, was battered by bad weather and did not function properly due to wrongly-sized parts. But the company announced today that the test of its 60-kW pre-commercial device, known as the TGU, was running smoothly and had delivered compatible electricity to the Maine grid at a consistent output. No word on how much electricity was actually generated. The machine was installed in Cobsook Bay in Eastport Maine last fall. Source - RenewableEnergyWorld