Vestas just announced that it has received its largest order ever for a single site, 570MW worth of turbines to be used in Terra-Gen’s Alta Wind Energy Center in California.

Per the agreement, Vestas is responsible for delivering and commissioning as well as 5 years worth of service and maintenance. The first 50 turbines will be delivered and brought online by the end of this calendar year, and the remaining turbines will be up and running within the first 6 months of 2011.

In a press release, Martha Wyrsch, President of Vestas Americas, commented on the order:

“The entire Vestas team looks forward to helping Terra-Gen bring this exceptional project to reality. When completed, it will be the largest wind farm we will have supplied turbines to in our 31-year history as well as the biggest in California. Terra-Gen has selected an excellent turbine and service package. We will work closely with their financiers and customers to make this project successful.”