How tall is a Floating Wind Turbine 20MW?
It is always hard to imagine the size of these structures, but a good picture is worth a thousand words. We have created some 3D renderings to illustrate the size of these structures in comparison with some famous buildings !
The Height of a Floating Wind Turbine: A Key Issue for the Offshore Wind Industry
With the rise of renewable energy, floating wind turbines are playing a central role in harnessing wind potential in deep waters. One of the most impressive features of these marine giants is their height, which determines their performance and environmental impact.
Monumental Size
The latest floating wind turbines have impressive dimensions. Here are the average proportions of a 20 MW floating wind turbine:
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Total height (from seabed to blade tip): approximately 300 to 320 meters
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Hub height (above water): 150 to 180 meters
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Rotor diameter: 250 to 300 meters
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Draft (submerged part of the structure): 15 to 20 meters (excluding Spar concepts)
Why Such Height?
The increasing size of floating wind turbines addresses several challenges:
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Capturing stronger and more consistent winds: The higher the altitude, the steadier and more powerful the wind, enhancing energy production.
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Optimizing output: A large rotor diameter allows for greater wind capture, improving overall turbine efficiency.
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Reducing energy costs: Despite high installation expenses, increased power per turbine lowers the cost per MWh produced.
Design Challenges
Building a floating wind turbine of this height presents major technical challenges:
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Resistance to storms and waves: A 300-meter-high structure must withstand extreme winds and rough seas.
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Stability of the floating platform: With a relatively shallow draft (10 to 15 meters for some designs), ensuring the structure’s balance is crucial.
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Environmental impact and visual integration: Such an imposing height raises concerns about visual impact and interactions with marine and aerial wildlife.
- Turbine integration: The wind turbine is assembled on top of the floater using a heavy lifting asset like a ring crane, considered the most powerful crane globally.
Towards Even Larger Wind Turbines?
Offshore wind industry players continue to innovate, increasing turbine capacity and reducing installation costs. Future models may reach even greater heights as floating and anchoring technologies advance. Some turbine suppliers are already considering 22 to 25MW turbines.
What is the size of a typical floater for a wind turbine 20MW?
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