. . . . . . . . . . "Regional field verification--operational results from four small wind turbines in the Pacific Northwest preprint"@en . . . . "This paper describes four Bergey Excel S (10 kW) wind turbines installed on sites in the Pacific Northwest under DOE/NREL's Regional Field Verification Program between 2003 and 2004 and summarizes operational data from each site."@en . . .