News release from Vestas-American Wind Technology, Inc. Portland, 27 May 2011 Page 1 of 2 Vestas receives 219 MW order in California, USA With reference to Vestas Wind Systems A/S’ company announcement No. 24/2011 of 27 May 2011, Vestas has received a 219 MW order for 73 V90-3.0 MW wind turbines for an expansion of the Alta Wind Energy Center near Tehachapi, California, USA. Overall, the expansion will install 100 V90-3.0 MW turbines as 27 were already purchased in 2010. The order has been placed by subsidiaries of Alta Wind Holdings, LLC, a wholly-owned subsidiary of Terra-Gen Power, LLC. The contract includes delivery and commissioning along with a five-year service and maintenance agreement for the 300-MW project. Delivery is scheduled for fall 2011 and commissioning is expected in late 2011. In July 2010, Vestas also won a 570 MW order from Terra-Gen for 190 V90-3.0 MW turbines for the Alta Wind Energy Center. It was Vestas’ largest sale – in terms of MW – for turbines going toward a single site in company history. “We are very pleased that Terra-Gen has decided to use Vestas turbines to expand the Alta Wind Energy Center,” said Martha Wyrsch, President of Vestas-American Wind Technology, Inc. “Our 570 MW project with Terra-Gen was delivered and brought to the electrical grid ahead of schedule. We value our partnership with Terra-Gen very highly and look forward to the same success on the next phase of the Alta Wind project expansion.” The 570-MW project was completed April 22, 2011, and has the capacity to provide electricity to about 170,000 California homes annually. The Alta Wind Energy Center, located in Kern County, is supported by a 1,550 MW power purchase agreement with Southern California Edison to help satisfy California’s 33 percent renewable portfolio standard. Contact details: For more information and/or to arrange an interview with Martha Wyrsch, please contact: Andrew Longeteig, Communications, Vestas-American Wind Technology, Inc., USA Tel.: +1 503 327 7479 About Vestas Vestas is the world leader in providing high-tech wind power systems. Since 1979, Vestas has supplied more than 43,000 wind turbines in 66 countries. Vestas sold its first wind turbine to North Vestas-American Wind Technology 1881 SW Naito Parkway, Portland, OR 97201, USA Tel: +1 503 327 2000, Fax: +1 503 327 2001, [email protected], www.vestas.com Company Reg. Name: Vestas-American Wind Technology, Inc. Portland, 27 May 2011 Page 2 of 2 America in 1981 and has since supplied more than 11,000 turbines to the United States and Canada. The company's North American manufacturing operations are based in Colorado, which includes a blade factory in Windsor, a nacelle factory in Brighton and a tower factory in Pueblo. Its sales and service headquarters is in Portland, Oregon. Vestas also has research and development offices in Texas, Massachusetts and Colorado. Vestas’ global headquarters is in Randers, Denmark. About Terra-Gen Power, LLC Terra-Gen is an affiliate of ArcLight Capital Partners and Global Infrastructure Partners. With more than 1,550 MWs of generating capacity in operation across 26 renewable power facilities, and 5,000 MW under development, Terra-Gen is one of the nation’s leading renewable energy providers and the only American company that provides electricity on a utility scale from all three major renewable energy sources: wind, solar and geothermal power. Terra-Gen is headquartered in New York City with offices in San Diego, Reno, Denver, and Charlotte. Vestas-American Wind Technology 1881 SW Naito Parkway, Portland, OR 97201, USA Tel: +1 503 327 2000, Fax: +1 503 327 2001, [email protected], www.vestas.com Company Reg. Name: Vestas-American Wind Technology, Inc. .