The dena Grid Study II  developed a long-term plan for the integration of renewable energies, and particularly wind energy, into the German power grid.

The following aspects have been examined in detail in the study:

• Flexible mechanisms for the generation of electricity
• Forecast as to the quality of wind energy fed into the grid and of electricity consumption
• Demand-side management
• Provision of balancing and reserve power by wind turbines
• The use of storage technologies
• Comparison of suitable means of transporting wind-powered electricity to load centres inland
• Reliability of electricity supply, even in difficult situations
• The current capacity of overhead lines depending on the ambient temperature and wind speeds (temperature monitoring)

Important key players were involved in the dena Grid Study II via a project control group: the Zentralverband Elektrotechnik- und Elektronikindustrie (the German Electrical and Electronic Manufacturers' Association ZVEI), VGB Power Tech, the Power Systems Association of the German Engineering Federation VDMA, the Association of German Network Operators, the German Electricity Association VDEW, Vattenfall Europe Transmission GmbH, Siemens AG, RWE Transportnetz Strom GmbH, the Offshore Wind Energy Forum and the foundation Stiftung Offshore-Windenergie, EWE Netz GmbH, EnBW Transportnetze AG, E.ON Netz GmbH, the Federal Wind Energy Association, BARD Engineering GmbH, the Federal Ministry of Economics and Technology (BMWi) and the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU). The aim of the project control group was to ensure that the research results are accepted by an audience as wide as possible. It provided advice and made decisions on fundamental questions regarding the content of the project, particularly where methodology and the input variables of the planned stages were concerned.

The dena Grid Study II was financed in part by public and private project partners. The results are expected at the end of 2010.

Further information of recent results will be published next.

Information materials

Broshure: Objectives of the dena Grid Study II