Energy utility Puget Sound Energy (PSE) has extended a pre-existing service agreement for the Whiskey Ridge, Wild Horse, and Hopkins Ridge wind projects in the US with Vestas Wind Systems for ten years.
The service agreement with Vestas has been extended for 429MW of capacity in Washington state.
The projects have been serviced by Vestas since their commissioning. They are equipped with 214 V80-1.8 and 22 V80-2.0 MW turbines.
PSE director of wind resources and asset management John Mannetti said: "PSE is excited to continue our excellent partnership with Vestas.
"They’ve serviced these sites from the beginning of our wind programme, and we’re glad they’ll be continuing to work with us as our assets progress through their lifecycle."
The extended agreement for the project lasts up to 2025 and includes a time-based availability guarantee that will support optimal turbine utilisation and productivity.
Under the deal, Vestas will be responsible for scheduled preventive maintenance, diagnostic service and unscheduled maintenance, and full component coverage for maximum performance.
Vestas sales and service division president in the US and Canada Chris Brown said: "Extending this service contract speaks to the strong partnership between Vestas and Puget Sound Energy.
"Since 2005, we have provided world-class service for their fleet of Vestas wind turbines."
As well as being one of the major utility owners for wind power, PSE is the largest utility producer of renewable energy in the Pacific Northwest.