The turbines are usually arrayed across land that is high and exposed, yielding the best wind resource. Arrays, commonly of 50 or more turbines, are called wind farms. A wind farm is an array of turbines often spaced about a quarter of a mile apart. The wind farm's reliability is increased by the fact that the turbines can be serviced one at a time. Often, in a conventional power plant of similar capacity to the wind farm, the entire plant would need to be shut down for servicing.
Wind turbines are low impact.
The tubular towers for large turbines are often only 12 feet in diameter at the base. Lattice towers have a slightly larger footprint but still take up a small space on a farmer's land. Together with access roads, a typical wind farm removes less than four percent of the land from agricultural production while roughly doubling the income from the farm area to the landowner who leases the space for the turbines. Row crops and livestock grazing can continue right up to the base of the turbine. Wind electricity is the fastest growing energy sector in the world, expanding at double-digit rates.