Renewables have grown their share of the power generation mix considerably in the last few years. This holds true especially for wind energy. However, since the flow of wind power is unstable due to the weather, it must always be backed up by conventionally generated electricity and must thus be considered a supplementary source, incapable of replacing other power production options single-handedly. Integrating wind energy into the supply grid poses a major challenge for the E.ON Energie Group. Wind-based electricity generation began to boom when the German Renewable Energy Act entered into force to promote wind power.

Today, a total of 20,600 megawatts (MW) of installed capacity are online. Nearly half of Germany's power production capacity (6.250 MW) is located in E.ON's balancing zone. To ensure grid stability despite the inaccuracy of wind forecasts, one must keep balancing and reserve capacity from conventional power plants on tap - an extremely expensive endeavor. Wind prognoses become more reliable for offshore wind farms, allowing the number of hours during which they can be operated at full load to rise.

Offshore wind power facilities can only be profitable if a large number of wind vanes is installed. One impediment is the high startup investment required to build the plants at high sea. E.ON Energie is involved in various wind energy projects via its subsidiary E.ON Energy Projects.