THE POWER OF THE WIND. The wind: a key factor in world economy Wind needs clean, renewable and competitive sources of energy; wind is a very competitive.

THE POWER OF THE WIND

The wind: a key factor in world economy

Wind needs clean, renewable and competitive sources of energy;

wind is a very competitive alternative to energy from fossil

fuels.

RESPECT FOR THE ENVIRONMENT

THE VESTAS VISION

Vestas is the world leader in wind technology.

Its core business regards the development, manufacture, sale, marketing, and maintainance of

installations that use wind energy to generate electricity.

Life cycle assessment of the wind turbine

OptiTip® OptiSlip® OptiSpeed®

What are them?

OptiTip®

A microprocessor-controlled pith

regulation system which ensures continuous and

optimal adjustment of the angles of the

blades in relation to the prevailing wind.

OptiSlip®

A generator system that allows both the rotor and the generator to vary their speed by up

to 10% during wind gusts, maximising power quality and reducing the strain

on turbine components.

OptiSpeed®

A further development of the OptiSlip® system. OptiSpeed® allows the speed of revolution of both the rotor and the

generator to vary by up to approximately 60 per

cent and optimises energy production,

especially in modest winds. The turbine starts to generate power to the

grid already at 4 m/s.

The OptiTip® and OptiSpeed® systems make it possible to

optimise the solution to the often contradictory requirements for

high output and low sound levels.

What types of turbines does Vestas manufacture?

Vestas began wind turbine manufacturing in 1979 and has played an active role in the dynamic wind turbine industry ever since.

Where are the turbines manufactured?

The manufacturing of wind turbines based on

Vestas Technology takes place at 12

different locations i Denmark, two in

Germany, one in Italy, one in Scotland, one in Tasmania (Australia), one in India, two in

Spain, one in Norway, two in Sweden and one

in England.

How many wind turbines has Vestas erected?

Since 1999, Vestas has experienced a notable increase in MW sales, from 653

MW in 1999 to 1,812 MW in 2003.The tendency is for the erection of fewer but

more productive turbines. This means that from 2001 to 2002 and from 2002 to 2003,

the company actually erected fewer turbines, but those erected have greater

capacity.

Over the past five years, Vestas has erected the following:

 Sales in number of

turbinesSales in MW

1999: 843 turbines 653 MW

2000: 1,014 turbines 805 MW

2001: 1,970 turbines 1,645 MW

2002: 1,453 turbines 1,640 MW

2003 1,369 turbines 1,812 MW  

At what wind speeds can Vestas wind turbines generate

power? Vestas wind turbines typically start to

generate power at wind speeds of around 4 m/s and normally cut out when wind speeds reach 25 m/s.

What does a wind turbine cost?

The price of wind turbines depends on many parameters, for example the turbine type, the foundation type, the location of the site, and transportation. Therefore, it is not possible to give a general price on

Vestas wind turbines.

What does a Vestas wind turbine look like inside?

1. Hub controller 10. Blade hub

2. Pitch cylinder 11. Blade bearing

3. Main shaft 12. Blade

4. Oil cooler 13. Rotor lock system

5. Gearbox 14. Hydraulic unit

6. VMP-Top controller with converter

15. Machine foundation

7. Parking break 16. Yaw gears

8. Service crane17. OptiSpeed™

generator

9. Transformer 18. Ultra-sonic sensors