Copenhagen Stock Exchange Nikolaj Plads 6 1067 Copenhagen Randers, 2 April 2007 Stock exchange announcement No. 12/2007 Previously announced patent case expanded to the Netherlands In stock exchange announcement No. 22/2006 of 5 April 2006, Vestas Wind Systems A/S informed that Mr Aloys Wobben had initiated court proceedings in England and Scotland regarding patents related to the connection to the grid. Mr Aloys Wobben has now also initiated court proceedings regarding some of these patents in the Netherlands. The management of Vestas Wind Systems A/S' assessment of the case remains the same. For the time being there is no basis for providing further comments on the matter. Any questions may be addressed to the Executive Management at Vestas Wind Systems A/S, or to Peter Wenzel Kruse, Vice President of Communication & IR at Vestas Wind Systems A/S, telephone +45 9730 0000. Yours sincerely Vestas Wind Systems A/S Ditlev Engel President and CEO