Wind: a reliable energy source with multiple economic, environmental and social benefits
Wind became a legitimate means to produce electricity in Canada in the early 1970s. Since then, the science and technology of wind energy has continued to advance, resulting in much more efficient wind turbines and a more accurate method for choosing their location. Wind parks can now be planned with greater precision, long before construction ever begins.
Wind is the movement of air around our planet. It is created by the effects of the sun on the atmosphere and the earth’s surface. As the ground is heated by the sun, the air above it becomes lighter and rises, creating vacuums that are filled by cooler air. Wind is essentially caused by differences in atmospheric temperature and pressure.
Local winds are produced as the sun heats the earth in a given area. Prevailing winds are produced by differences in temperature between the polar caps and the equator.
Man has been converting wind into mechanical energy for thousands of years, as ancient windmills and sailboats can testify. Modern wind farms are converting the kinetic energy of the wind into electrical energy.
Clean, renewable wind energy is the ideal alternative to fossil fuels. Wind turbines produce no atmospheric emissions, no harmful waste nor any other type of air or water pollution. And the noise produced by a wind turbine, as measured outdoors close to nearby houses, is no more than 40 dB, which is equivalent to the hum in a library.
Wind energy is therefore particularly reliable and has multiple economic, environmental and social benefits. Not surprisingly, wind is one of the fastest growing energy sources in the world.