Deep_Water
Deep_Water
Deep_Water
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Annex<br />
PelaStar<br />
Descriptions provided by the projects<br />
Design name<br />
Company<br />
Substructure<br />
PelaStar<br />
The Glosten Associates<br />
Tension-leg turbine platform<br />
Turbine capacity 1:50 (demonstration/pilot)<br />
2.5 MW (commercial)<br />
Demonstration/pilot 2011<br />
Commercial installation 2015-2017<br />
Origin<br />
United States<br />
PelaStar is a tension-leg platform (TLP) integrating<br />
proven TLP technology. It is widely used in the offshore<br />
oil and gas industry, and is being adapted for the offshore<br />
wind industry.<br />
PelaStar’s features include:<br />
• Simplicity of design – an optimised steel structure<br />
with no mechanical systems.<br />
• Minimal motions and accelerations at the turbine –<br />
there are no pitch, roll, or heave that degrades performance<br />
and increases wear on components.<br />
• Efficient quayside assembly, turbine testing, and<br />
partial commissioning reduces offshore work,<br />
weather delays, and the need for expensive offshore<br />
equipment.<br />
• The tendons, with their vertical orientation under the<br />
hull, create a compact footprint that reduces the<br />
risk of underwater interferences.<br />
• Technology focused on reducing the cost of energy<br />
has produced the lowest capital costs for floating<br />
designs.<br />
The PelaStar TLP is designed to support 5 MW to 10<br />
MW turbines in 50m to 200m water depths.<br />
Model testing at 1:50 scale was completed in 2011. A<br />
full-scale, 6 MW turbine demonstration is planned for<br />
2015, with a multi-unit pilot project following in 2017.<br />
46 <strong>Deep</strong> <strong>Water</strong> - The next step for offshore wind energy
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