The oil crisis of the 1970s spurred efforts into developing wind energy as an alternative source of electrical power. Many countries launched programs to develop modern wind turbines. While many of these programs failed, Denmark was successful in developing modern wind turbines. Countries such as the United States have adopted this technology to develop wind energy resources.
The modern wind turbine is the result of design and material advances made during the 1980s and 1990s, which have enabled wind turbines to become increasingly efficient. Today, wind turbines the same size as the traditional European windmill can generate 250 to 300 KILOWATTS of power-a nearly tenfold increase in efficiency.