Siemens Energy has signed a contract extension with Edison Mission Energy to continue providing service and maintenance on the 70 SWT-2.3-93 wind turbines operating at the Wildorado Wind Ranch, near Amarillo, Texas. The extension will help the project perform at optimal levels of efficiency and availability for years to come. Located on approximately 16,000 acres, the 161 megawatt (MW) Wildorado Wind Ranch has the capacity to meet the electricity demand of more than 50,000 households.