WIND POWER - MANY OPPORTUNITIES
Wind power is conversion of the wind energy to electricity. In wind turbines the wind energy is converted to blade rotation and from that to electricity.
Since 1990 wind power has been the world's fastest growing electricity production method. Wind energy is in everywhere on the world and it's been utilized only a minor amount. It's been evaluated that the usable wind energy is 10x more what world is using in electricity.
DEVELOPING ENERGY PRODUCTION METHOD
Wind power production is different from traditional electricity generation due to temporal variations. Production varies daily according to windiness. To start up the turbine it requires 3 m/s wind. Wind turbine power is increased as the wind speed increases. This natural variation is compensated by the fact that the decentralization of production in different regions and wind power are used alongside other forms of energy production.
Wind power is a developing form of electricity production, which economic viability requires assistance. Wind power costs are focused to construction period. Wind power capacity in Finland is possible to increase majorly from current. At the moment, biggest turbines are 3-5 megawatts. In the future the single turbine size especially offshore applications is increasing to be more than 5MW.
Wind power is renewable, emission-free energy. It's production does not generate greenhouse gas emissions to air, water or ground. Emission-free electricity is produced throughout the wind turbine lifetime, in practice from 20 to 25 years.
Wind power replaces the most expensive production methods. This in Nordic countries is mainly from coal burning energy. What is essential is to look at the total emissions in annual basis. Each megawatt hour produced from renewable energy reduces emissions compared to the situation where the same electricity would have been produced from coal, gas or oil.
The environmental impact of wind power
Greatest environmental impact from wind power is it's role in the landscape. Turbines also cause some noise and sunlight reflections. For this reason, turbines are placed in the sea or land to a place where the effects to landscape, living environment and the cultural heritage are minimal. Building a large wind farm to industrial area is usually the best option in environmental point of view.
Wind turbine impact on the bird population has been found to be very low. For vegetation, wind power plants are no harm except the ground works during the construction phase.
As a whole the use of windpower benefits for the environment outweigh. Wind energy production emission-free is the main advantage and wildlife benefits from the reduction in emissions.