Design Engineering

Ocean Renewable Power Company’s Beta Power System is grid compatible through tiday currents


General DPN

Ocean Renewable Power Company (ORPC) announced that its Beta Power System has successfully generated grid-compatible power from tidal currents at its Cobscook Bay site in Eastport, Maine.

The system Turbine Generator Unit (TGU) is deployed below the research and testing vessel called the Energy tide 2. It has a 60 kW capacity and test results show that the TGU’s electrical output “meets or exceeds expectations for the full range of current velocities encountered,” says the ORPC.


The ORPC will use the data collected form the power system to edit the design of its commercial TidGen Power System, which is planned to be installed at Eastport in late 2011. It will be connected to the New England grid through the Bangor Hydro Electric Company system to provide 50-75 homes with power.



The Beta Power System’s cross-flow turbines are engineered with 100% composite materials. It also features a permanent magnet generator, a composite support frame, and a power electronics system.


After three years of partnership with the University of Maine, the ORPC is creating a program to observe the marine environment around the Beta Power System. UMaine researchers will be supervising this program by collecting data to allow the ORPC to better understand interactions to help minimize risks to marine life. Over the next two months, the ORPC will be demonstrating how tidal energy can be delivered to the U.S Coast Guards for use at its Eastport station through a battery electrical supply system. According to the ORPC “this is the first application of tidal energy by a federal agency.”



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