Could Germany's grid handle a renewables onslaught?

Over the past year, Siemens has lent its considerable weight to a pioneering project ascertaining whether it is technically possible for Germany’s power needs to be 100% supplied by renewable energy — despite its notoriously intermittent nature, and the threat it could pose to grid stability.

The pioneering €3m ($2.2m) project, co-ordinated by the Fraunhofer Institute for Wind Energy and Energy Systems at the University of Kassel, is to create the world’s largest virtual power plant.

In the first stage, the Fraunhofer Institute modelled the real-time output of three wind farms totalling 12.6MW, 20 solar plants (5.5MW), four biogas systems (4MW) and an 8.4GWh pumped-storage hydro facility, and showed how intelligent control systems could be employed to combine the technologies and respond to the electricity demand of a town of 12,000 households just as…

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