Vestas Wind Systems — M&A Activity 2012

May 21, 2012

Company announcement from Vestas Wind Systems A/S

Aarhus, 21 May 2012 Company announcement No. 20/2012 Page 1 of 1

Information in the market regarding projects in South Africa

Today, there is information in the market regarding Vestas being appointed preferred supplier for five projects in South Africa.

Vestas can confirm we have been appointed preferred supplier for five projects in South Africa with a total capacity of 297 MW. If the further negotiations between the developers and Vestas will result in firm and unconditional orders, Vestas will make a company announcement immediately thereafter.

Vestas discloses this announcement based on Vestas' obligation as a Danish listed company, ref. the Securities Trading Act, section 27(2).

Contact details: Vestas Wind Systems A/S, Denmark Lars Villadsen, Senior Vice President, Investor Relations Tel.: +45 9730 0000