Many factors are contributing to an emerging interest in renewable energy, including wind power. The effects of global climate change have just started to be understood over the past few decades. Windmills have been used to generate energy on a small scale for centuries. Until global warming trends were noticed, coal power seemed like it could be relied upon as a primary global energy source for hundreds, if not thousands, of years. Now, we understand that despite its status as a plentiful resource, coal power is a massive contributor to CO2 emissions and climate change. Wind power is emerging as one part of the solution.
The technology to efficiently produce electricity on the megawatt scale with wind turbines is relatively new. The three-blade wind turbine was only developed about 50 years ago, and just recently became economically viable.
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