The 500MW Bison wind energy center has been developed in four phases and features 165 turbines.
As per the 10-year deal, Siemens will provide service and maintenance for the 149 D3-platform turbines installed in the first three phases of the Bison Wind Energy Center, which were built in 2010-2012.
It will also provide services to Bison Phase 4, which was commissioned in January 2015.
Siemens will provide services for 85 SWT-3.0-101 direct drive turbines at Bison Phase 1B, Bison 2 and Bison 3 as well as 64 SWT-3.2-113 turbines at Bison 4.
Siemens Wind Service and Renewables business CEO Mark Albenze said: "Siemens and Minnesota Power have a long history of working together and this is a continuation of our ongoing collaboration.
"A committed supporter of renewable energy, Minnesota Power boasts the largest fleet of Siemens’ D3 turbines in the U.S.
"We look forward to working closely with them to help with the continued reliability, affordability and sustainability of their renewable energy projects."
The power generated from the facility is delivered via a 465-mile direct current transmission line to the Square Butte Substation in Center, North Dakota, to Minnesota Power’s Arrowhead substation near Duluth, Minnesota.
Minnesota Power COO Brad Oachs earlier said: "With this substantial addition of wind to our portfolio, we are meeting Minnesota’s renewable standard of 25% renewable energy by 2025, a decade early."
At present, Siemens is contracted to provide service and maintenance for more than 3,700 installed wind turbines in the Americas region and more than 9,000 units globally. These turbines have a combined generating capacity of approximately 22GW.
Image: Siemens installed 165 turbines at the Bison Wind Energy Center in North Dakota. Photo: courtesy of Siemens AG.
