Vestas Wind Systems — Major Shareholding Notification 2010

Feb 17, 2010

Company announcement from Vestas Wind Systems A/S

Randers, 17 February 2010 Company announcement No. 5/2010 Page 1 of 1

Major shareholder announcement – BlackRock, Inc.

Vestas has received information from BlackRock Investment Management (UK) Limited, 33 King William Street, London EC4R 9AS, UK that BlackRock, Inc. as per 12 February 2010 has increased their holdings of Vestas shares to 10,189,270 shares (5.00 per cent).

Yours sincerely Vestas Wind Systems A/S

Ditlev Engel President and CEO

Contact details: Vestas Wind Systems A/S, Denmark Peter W Kruse, Senior Vice President, Group Communications Telephone +45 9730 0000