Siemens Gamesa Sends Off 14 MW Wind Turbine Nacelle Prototype

Siemens Gamesa has shipped out the SG 14-222 DD prototype nacelle from its plant in Brande, Denmark, to the test site in Østerild.

With a weight of 500 tons, the lightweight nacelle is said to enable Siemens Gamesa to safely utilize an optimized tower and foundation substructure compared to a heavier nacelle. Benefits thus arise in the form of lower costs per turbine by minimizing sourced materials and reducing transportation needs, the company said.

SG 14-222 DD prototype nacelle. Source: Siemens Gamesa/Twitter

The tower for the prototype unit has already been installed at the site.

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The turbine prototype is expected to be ready in 2021, and the model will be commercially available in 2024.

The SG 14-222 DD turbine model has a 14 MW capacity, reaching up to 15 MW using the company’s Power Boost function. The model features a 222-metre diameter rotor, 108-metre blades, and a 39,000 m2 swept area.

The 14 MW capacity allows one SG 14-222 DD machine to provide enough energy to power approximately 18,000 average European households every year. Approximately 30 SG 14-222 DD offshore wind turbines could furthermore cover the annual electricity consumption of Bilbao, Spain, the company said.

The 222-metre diameter rotor uses the new Siemens Gamesa B108 blades. Each 108-metre IntegralBlade® is cast in one piece using patented Siemens Gamesa blade technologies.

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Additionally, the turbine’s 39,000 m2 swept area is equivalent to approximately 5.5 standard football pitches. It allows the SG 14-222 DD to provide an increase of more than 25 per cent in Annual Energy Production compared to the SG 11.0-200 DD offshore wind turbine, Siemens Gamesa said.

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Siemens Gamesa has also signed preferred supplier agreements to deliver the new turbine to the 300 MW Hai Long 2 project in Taiwan and the 2.6 GW Dominion Energy Coastal Virginia Offshore Wind (CVOW) commercial project in the US.

NOTE: The original article has been amended.