Alstom Delivers More Efficient Tidal Turbine

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Alstom has improved the performance of its tidal energy solutions with Oceade™ 18 – 1.4MW tidal stream turbine.

With a rotor diameter of 18 metres, the Oceade™ tidal stream turbine has a nominal power of 1.4MW and three variable pitching blades. It is equipped with “plug-and-play” modules on rails, easily accessible through an inspection hatch at the rear of the nacelle to enable faster assembly and maintenance. Moreover, this turbine is buoyant, making it easy to tow to and from the operating site. Installation and maintenance costs are also lower because there is no need for specialist vessels or divers. The unit rotates to face the incoming tide at an optimal angle and thus extract the maximum energy potential.

The Oceade™ is ready to be deployed at the tidal energy farm that will be selected in the call for expressions of interest launched in September 2013 by the French government.

Alstom is currently working on the development of an Oceade™ platform concept to reduce the price of electricity and maximise the use of tidal stream resources according to local conditions.

In January 2013, Alstom successfully deployed a 1MW tidal stream turbine at the European Marine Energy Centre (EMEC), a test site located off the coast of the Orkney Islands in Scotland. Alstom is currently testing the turbine, which has already reached nominal power of 1MW, demonstrated its autonomous running capability and generated over 500MWh on the Scottish grid, as part of the ReDapt Project (Reliable Data Acquisition Platform for Tidal), which is commissioned and co-funded by the ETI (Energy Technologies Institute).

“With this new tidal energy production solution, Alstom has made definite headway. The project is seeking to demonstrate a new design for an efficient, reliable turbine to reduce installation and maintenance costs with a view to commercial production,” stated Jacques Jamart, Alstom Senior Vice-President New Energies.

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