Watch a time-lapse video of the blade going up in Brussels

» By | Published 04 Jun 2010 |

Here’s some great footage of the 29.5m blade going up in the heart of the EU quarter earlier this week:

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FAQs: Wind energy basics

» By | Published 18 May 2010 |

Have you ever wondered what a wind turbine is made of? Or maybe you’ve found yourself questioning how fast turbine blades turn or how the wind is measured. Here is a small extract from our new frequently asked questions section that could provide you with the answers you’ve been looking for.

What is a wind turbine made of?

The towers are mostly tubular and made of steel or concrete, generally painted light grey. The blades are made of glass-fibre reinforced polyester or wood-epoxy. They are light grey because it is inconspicuous under most lighting conditions. The finish is matt, to reduce reflected light.

How fast do turbine blades turn ?

The blades rotate at anything between 15-20 revolutions per minute at constant speed. However, an increasing number of machines operate at variable speed, where the rotor speed increases and decreases according to the wind speed.

For more answers to your questions, click here

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