German manufacturer Schottel Hydro has received an order for a prototype marine energy turbine from Sweden's Minesto for installation at the planned Deep Green tidal power plant.
The order, which stems to a strategic partnership announced in December, will see Schottel deliver the turbine unit in early 2017.
The partners' refinement of the Deep Green units, described as an "underwater kite", resulted in an enlarged rotor diameter, with an increase in blades from three to five. Tests were conducted and verified by German Chiffbau Versuchsanstalt in Potsdam.
"We completed the detailed design of the turbine and power conversion system for Deep Green," said Schottel Hydro technical director Martin Baldus. "The model scale tests prove the turbine's performance and cavitation behavior to be advantageous compared to previous designs. The integration of our scope of supply into the Minesto kite system works out very well."
The improvements lead to an overall 10% increase in performance, according to Minesto CEO Martin Edlund.
"In parallel with the final design, we procure subsystems and components which will be assembled into a first full-scale demonstrator," Edlund said. "It will then undergo final functionality testing. After that, we are ready to implement Deep Green in full-scale on the offshore facility."
The units are expected to be deployed at Holyhead Deep near Andlesey, Wales, in 2017. Minesto previously said the site will launch with a commercial-scale 0.5-MW power plant, with plans to expand to 10 MW.
HydroWorld.com reported that Minesto was awarded a US$14.8 million investment from the European Regional Development Fund for Deep Green's commercial rollout this past May.
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