Waves, strong currents, turbulence, various water temperatures, microorganisms and winds up to 200 miles of speed are some of the aspects that are now concentrated German scientists to achieve better performance in wind power generation in high Tues At the same time face the challenge of building ever-larger turbines and greater power.
“The main focus of research is to obtain offshore wind turbine design that can withstand all these conditions, as well as structures with a lifespan of 20 years and whose cost is reduced. These tools must be validated in practice in the marine environment, so they can be produced industrially, “said Dr. Tom Neumann, director of research of the German Wind Energy Institute (DEWI by its initials in German).
According to figures from DEWI, until 30 June 2010 were 21,308 wind turbines installed in Germany, equivalent to 26,384 megawatts capacity. Due to this wide range of renewable energy, the final price of a kilowatt hour of clean electricity that is four to five times cheaper than solar energy, for example. This is why the Germanic bet is to build North Sea wind farm 20, which equates to 7756.4 megawatts of energy power. This objective has not been without problems and delays.
Such is the case of “Alpha Ventus”, the first German wind farm offshore that after seven years late became operational in April 2010 with 12 turbines, even with some problems. “This new technology is beginning to overcome the so-called” childhood diseases. ” It is a new experimental field which should be optimized yet. There were many questions to be resolved. And although not yet solved all, we are on track, ” says Neumann.
Currently, of the 20 planned wind farms being installed “Bard Offshore 1.” 80 turbines 89 kilometers northwest of the island of Borkum generate 400 megawatts of electricity.
In addition to building massive wind farms at sea, “the strategy of Germany also provides small to replace the old turbines, but also optimize the things that were not done very well the first time, ” says Neumann.
Besides reducing the number of turbines in the landscape, the new giants are quieter. However, both Neumann Wingerden as the biggest problem is the waste from the old turbines, whose maturity of 20 years and is about to be met for the first. “The removal and disposal of these materials are part of the environmental costs of wind turbines that are taken into account,” says researcher IWES. According to the government energy plan, that upgrading to reach by 2030 at a cost of 75,000 million euros, without counting the problems that arise on the fly.