Wind power is a Finnish renewable energy source. Wind power generates no emissions to air, water or soil. The use of wind power increases Finland’s independence in energy production from imported fossil fuels and electricity.
In technical terms, wind power means using wind turbines to convert the kinetic energy from the wind, i.e. the air flow, into rotational energy of the axis, or mechanical energy, which in turn is converted into electricity in the wind generator.
Wind power deviates from traditional electricity generation mainly due to the time variation in its production. Wind power production varies daily according to the wind conditions. Calm days, which are rare in Finland, are not a problem when only part of the electricity is produced by wind power in a distributed way throughout Finland.
According to a study commissioned by the European Commission, external costs of wind power, i.e. extra costs to society and the environment, are the lowest out of the different energy forms, 0.1–0.2 c/kWh. Therefore, wind power is the most cost effective of the current renewable forms of separate electricity production.
A single person living in a studio apartment consumes 1,000 kWh of electricity per year. A family of four in a detached home with electric heating uses 20 MWh, or 20,000 kWh, of electricity per year. One wind turbine produces about 8,000 MWh of electricity per year, enough energy for about 400 detached homes with electric heating or 8,000 studio apartments.