German wind turbine manufacturer Siemens has won three wind farm maintenance contracts in Washington and Oregon.The company said the deals were worth a combined $55 million.Under a deal with San Diego-based Cannon Power Group, Siemens will provide warranty maintenance services for 114 of its SWT-2.3-93 wind turbines in the Wind Flats and Windy Flats Extension wind farms in Washington. The deal runs for four years.

The company has secured a five-year deal with Iberdrola Renewables to extend its service, warranty and maintenance contract for the 44 wind turbines in the Klondike III wind project in Oregon. And, Summit Power has extended a service contract for 89 turbines at its White Creek wind farm in its home state of Washington for another two years with Siemens.