Vestas Wind Systems — Share Issue/Capital Change 2009

Apr 28, 2009

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Company announcement from Vestas Wind Systems A/S

Randers, 28 April 2009 Company announcement No. 11/2009 Page 1 of 2

Share capital increase of DKK 18,500,000 new shares will be completed

Vestas Wind Systems A/S ("the Company") is pleased to announce that the share capital increase with nominal value DKK 18,500,000 representing 18,500,000 shares, which was announced earlier today has been fully subscribed for and finalised in connection with a private placement carried out through an accelerated book building process. Please refer to company announcement No. 10/2009 of 28 April 2009.

The capital increase has been subscribed for at a price per share of DKK 323 and in a private placement sold on to institutional and professional investors in Denmark and internationally. The Company will receive gross proceeds of approx. DKK 5,976m. Following completion of the share capital increase, the nominal share capital of the Company will amount to DKK 203,704,103 divided into 203,704,103 shares of DKK 1.00 each.

The new shares will be listed on NASDAQ OMX Copenhagen under the ISIN code for the existing shares, DK0010268606, from 6 May 2009 following registration of the share capital increase with the Danish Commerce and Companies Agency and merger of the temporary ISIN code DK0060180339 with the existing ISIN code in VP Securities. The temporary ISIN code will not be listed on NASDAQ OMX Copenhagen, but only registered in VP Securities for subscription of the new shares.

Payment and settlement is expected to take place on 4 May 2009. Until the settlement has taken place, the capital increase may under extraordinary circumstances be cancelled.

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The securities of Vestas Wind Systems A/S described in this release have not been and will not be registered under the U.S. Securities Act, and accordingly, any offer or sale of these securities may be made only in a transaction exempt from registration.

This release is not an offer for sale within the United States of any equity shares or any other security of Vestas Wind Systems A/S. Securities of Vestas Wind Systems A/S, including any offering of its equity shares, may not be offered or sold in the United States absent registration under U.S. securities laws or unless exempt from registration under such laws. This release is being issued pursuant to and in accordance with Rule 135(c) of the U.S. Securities Act.

Randers, 28 April 2009 Company announcement No. 11/2009 Page 2 of 2

This release contains "forward-looking statements" within the meaning of Section 27A of the U.S. Securities Act and Section 21E of the U.S. Securities Exchange Act. Undue reliance should not be placed on forward-looking statements because they relate to and depend on circumstances that may or may not occur in the future and actual results may differ materially to those in forward-looking statements. Forward-looking statements include, without limitation, statements regarding our business, financial condition, strategy, results of operations, financing and other plans, objectives, assumptions, expectations, prospects, beliefs and other future events and prospects. We undertake no obligation, and do not intend, to publicly update or revise any of these forward-looking statements, whether to reflect new information or future events or circumstances or otherwise.

Yours sincerely Vestas Wind Systems A/S

Bent Erik Carlsen Ditlev Engel Chairman of the Board of Directors President and CEO

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