More than 21.000 wind energy plants with a capacity of 24.000 MW have been installed in Germany. Last years' general tendency goes towards offshore wind farms, as the average wind speed is usually considerably higher and wind blows more regularly than on land.

The current design of ground improvement for wind energy plants is highlighted and successful examples of wind energy plant foundations are given including vibro compaction, vibro replacement stone columns and vibro concrete columns.

Finally recommendations are given for execution and quality control.