A third major German transmission network operator, RWE Net, is joining E.on Netz and Vattenfall Europe Transmission in using a forecasting model for predicting wind energy generation developed by the Institute for Solar Energy Technology (ISET) in Kassel. The model predicts wind generation days or hours ahead. Almost of all Germany's 12,000 turbines feed into the networks of one these three companies, corresponding to about half the capacity installed in Europe and one third of wind energy worldwide, making the ISET model globally the most used forecasting model, according to Martin Hoppe-Kilpper of ISET. The 48 hour forecast, says Hoppe-Kilpper, has a statistical average error rate of 10% while the three to six hour forecast is reliable to more than 95%.
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