Wind turbines have been getting bigger and bigger over the years. The reason is that bigger blades produce more power and give much more bang for the buck. A big part of the plummeting price of wind power is the increasing amount of power produced by each turbine.
department of energy
Every stage of civilization is characterized by its use of energy. From burning wood to steam engines to our electrified society, energy is behind everything we do. Over time, human society has become increasingly energy intensive. As our standards of living have improved and as we overcome the effects of weather – either cold or warm – it takes more and more energy to live the lives we lead.