A2SEA is a market leading supplier of installation vessels for the construction of offshore wind farms. DONG Energy has been using A2SEA's vessels for a series of offshore projects, and presently a vessel is engaged in the construction of the Horns Rev 2 wind farm in the North Sea.

The purchase of A2SEA and its vessels provides DONG Energy with increased flexibility by owning its own vessels and ensures in-house knowledge and competence. Furthermore, it facilitates faster completion and commissioning of wind farms.

In March 2009, DONG Energy signed a contract with Siemens for the purchase of up to 500 wind turbines. The agreement was the first step in DONG Energy's efforts to industrialise the market for offshore wind projects. The purchase of A2SEA represents the next important step in this.

DONG Energy is about to complete the building of Horns Rev 2 (209 MW) and Gunfleet Sands I+II (172 MW). In coming years DONG Energy will build the Walney I+II (367 MW) offshore wind farms.

Furthermore, DONG Energy plans to build the world's largest offshore wind park; London Array I (630 MW), together with E.ON and Masdar. In addition, DONG Energy has a considerable number of wind projects on the drawing board.

A2SEA is headquartered in Fredericia, employs about 200 people and owns four vessels.