We are a world leader in wind energy
We use the power of the wind across the globe on land and at sea to generate environmentally friendly energy. In a growing market for renewable energy, we play a key role in the wind industry and are already among the top 10 wind power operators worldwide – and we want to grow further.
In Europe and the US, we operate onshore wind farms with an installed capacity of about 4.000 MW. Amongst them is Roscoe in Texas, at 782 MW one of the world’s largest onshore wind farms.
We are the world’s third largest operator of offshore wind farms. In cooperation with DONG Energy and Masdar, we have recently completed London Array, the world’s largest offshore wind farm with 630 MW installed capacity. It provides enough clean power for nearly half a million UK homes.
We are currently building EPC VENTURE’s first commercial offshore wind project in Germany, Amrumbank West. Once completed, Amrumbank West will provide enough power for up to 300,000 German homes each year.
We are committed to making further large-scale investments and to expanding our onshore and offshore capacity. At the same time, we are pursuing demanding cost reduction targets to make wind energy ever more competitive and affordable.
How to harness the power of wind
The creation of wind is a simple physical process: The sun’s radiation heats the earth, creating temperature differences which lead to pressure differences, causing the air to move. Wind is air moving from high pressure to low pressure areas.
Wind conditions onshore and offshore differ. While the landscape, trees and buildings distort the flow of onshore wind, offshore wind flow can develop without obstacles with higher wind speeds and a more even flow close to the surface which also allows for lower tower heights.
In order to use wind at its best, offshore wind farms are laid out in a specific way: The wind farm layout depends on the main wind direction and the conditions of the seabed. To avoid turbulence from other wind turbines, wind farms are designed with a minimum distance between individual turbines of 5-8 times the rotor diameter in main wind direction.
Today, we have a fleet of more than 3,300 wind turbines producing clean energy around the globe. Wind turbines have the following main components: foundation, tower, nacelle, blades (with adjustable blade pitch), generator, gearbox, converter, transformer, as well as monitoring, control and braking systems.
1. The wind passes perpendicular to the rotor blades and causes the rotor to move.
2. The rotor blades transfer their energy to the drive train situated in the nacelle.
3. The drive train adjusts the rotor speed to the suitable rotational speed of the generator.
4. The generator converts the mechanical energy into electrical energy, and later a converter fixes the frequency to 50Hz (in Europe) or 60Hz (in US).
5. The electrical energy is fed into a transformer that increases the voltage up to the required grid voltage for distribution.