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Here are a few tidbits from a photo diary over at Eurotribune, 5MW with location picture, that shows the construction of a 5 mw wind turbine.

For information and photos, check out Talisman. 

 The background data:

 The Turbines are in a water depth off approximately 45 meters
- The size of key components include:
  — Sub sea jacket height (including transition piece) - 70 meters
  — Piles - 44 meters below sea bed level
  — Tower height - 59 meters
     — Giving an overall hub-height of 87 meters above sea level
  — Rotor blade length - 61.5 meters (Giving an overall height from subsea to rotor blade tip, of 234.5 meters)
- Total weight:
  - Rotor blades and hub - 125 tonnes (blades are 17.5 tonnes each)
  - Turbine - 305 tonnes
  - Tower - 225 tonnes
  - Subsea jacket and associated equipment - 760 tonnes
  - Piles (4) - 120 tonnes each
- Power Produced - 5 mega watts for each turbine, giving a total of 10 mega watts for the Demonstrator Project.