The DanTysk offshore wind farm, located 70 kilometres west of the island of Sylt in the North Sea, has the capacity to generate 1.3 TWh of electricity a year, which equates to the annual consumption of 400,000 German homes.
Installation of the first 3.6 MW turbine began in April this year, with all 80 turbines being put in place within four months.
Today, DanTysk supplied electricity to the German power grid for the first time. The turbines will now be commissioned one at a time, a process that is expected to last until the beginning of 2015.
"I am very pleased. DanTysk is a major and extremely complex project which will make a significant contribution to the use of renewable energy in the German power grid. I would like to take this opportunity to thank everybody involved in the project for their outstanding achievements," says Mr Hall.
You have previously stated that renewable energy is Vattenfall's core business of the future. The investment programme is also being reassessed. How will Vattenfall afford growth in renewables in years to come?
"Vattenfall is a strong onshore and offshore wind farm developer and owner. We want to leverage our expertise and skills in project planning and the construction of new wind farms. Partnering with other investors after construction is therefore a natural step. We want to build and operate wind farms, not necessarily have full ownership of them."
DanTysk is just one example of Vattenfall's joint ventures. The German municipal utility company Stadtwerke München holds a 49% stake in the wind farm.
Vattenfall is also working together with Stadtwerke München on the Sandbank offshore wind farm, also situated in the North Sea.
How do you see the outlook for continued expansion of wind power in Europe?
"The outlook is very positive and Vattenfall will invest SEK 11 billion in wind projects over the next four years. Today, it is cheaper to construct onshore wind farms but costs for building offshore wind farms have fallen considerably," says Magnus Hall.
Danish surveillance centre
DanTysk's 80 turbines will be monitored by Vattenfall's surveillance centre in Esbjerg, Denmark – one of the largest wind turbine surveillance centres in Europe.
Vattenfall has approximately 1,000 turbines throughout Denmark, Germany, the Netherlands, Sweden and the UK, all of which are overseen by the Esbjerg office around the clock.
Read more about DanTysk