Two wind farms in northwestern Missouri are expected to generate enough electricity for up to 64,000 homes — a power source Columbia plans to tap. The wind-swept farm fields near King City don’t seem to be a likely place to find a miracle of 21st-century engineering. Cows graze behind barbed-wire fences. Ponds reflect the late-summer sky, and local history is on display at a living history festival just down the road. A mile north of town, gargantuan white cylinders and sleek, aerodynamic blades rest on the ground beside massive cranes like a collection of NASA spacecraft. The scale of Missouri’s first wind farm has to be seen to be appreciated. Just as impressive is the speed at which this project is coming together. Only three months ago, Missouri had no utility-scale wind farm. By the end of 2007, 51 wind turbines will begin pumping power into the grid of lines and towers that feeds the Midwest’s hunger for electricity.