Rock Port, Mo., has an unusual crop: wind  turbines.
 The four turbines that supply  electricity to the small town of 1,300 residents make it the first community in  the United States to operate solely on wind power.
  A  map published by the U.S. Department of Energy indicates that northwest Missouri  has the state's highest concentrations of wind resources and contains a number  of locations that are potentially suitable for utility-scale wind development.  The four turbines that power Rock Port are part of a larger set of 75 turbines  across three counties that are used to harvest the power of wind.
 "We're farming the wind, which is something that we have  up here," Crawford said. "The payback on a per-acre basis is generally quite  good when compared to a lot of other crops, and it's as simple as getting a cup  of coffee and watching the blades spin."
 And the turbines have  another benefit besides produces clean energy: MU Extension specialists said  that the Missouri wind farms will bring in more than $1.1 million annually in  county real estate taxes, to be paid by Wind Capital Group, a  wind energy developer based in St. Louis.
 "This is a unique situation  because in rural areas it is quite uncommon to have this increase in taxation  revenues," 
 The turbines will also provide savings to rural electric  companies and will provide electric service for at least 20 years, the  anticipated lifetime of the turbines.
 "Anybody who is currently  using Rock Port utilities can expect no increase in rates for the next 15 to 20  years," 
 