I took this photograph from the inside of a moving bus, yet it is one of my favorites from my year in Spain. It is a snapshot of a wind farm at La Muela, which is located in the province of Zaragoza, about thirty kilometers outside of the city of Zaragoza (the city in which I lived). Passing the windmills at La Muela was my favorite part of the five hour bus ride to Madrid; yet, only recently did I realize that I know very little of the wind farms in Spain—or in the United States as well as other parts of the world—and their impact on making the world a “greener place.” So, in researching them, this is what I found:
A wide variety of factors go into the planning of a wind farm, most specifically in their location. Sometimes, wind farms are constructed near the shore of a lake or ocean to take advantage of the winds generated by such an area, but often this leads to the disruption of a picturesque landscape. Although frankly, this is the biggest complain of wind farms today.
Yet the benefits of wind farms greatly exceeds their small drawbacks. According to Mark Diesendorf in Why Australia needs wind power, published in Dissent, “The impact made on the environment is very little when compared to what is gained.” It only takes a couple of months once a wind farm is operating before the energy consumed to build the farm is reproduced by the farm.
As of today, there are three types of wind farms: on-shore, near-shore, and off-shore. (This list does not count airborne, yet those are not in commercial operation yet). On-shore wind farms are those set typically in hilly regions on land; near-shore farms are those between three kilometers from a body of water to ten kilometers from a body of land; and off-shore farms are those at least ten kilometers from land (i.e. fully within a body of water). Floating wind turbines, just as their name implies, are set in off-shore locations where winds are strong but water depths make mounting them impossible; these generate, for the most part, more wind than those closer to shore; energy then travels back to shore through underwater cables.
Up until 2008, the United States came in second place for the most energy produced by wind farms in the world; now, the U.S. ranks first, Germany follows in second, and, ironically, Spain comes in third.
