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, Calif.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.