The majority of carbon dioxide emissions occur during combustion of fossil fuels for energy. We heat our homes and run our vehicles using energy from coal and oil. The carbon dioxide generated when we burn coal or oil cannot be removed. Carbon dioxide in the atmosphere contributes to the greenhouse effect that is rapidly heating the world and melting the polar ice caps. Another factor affecting our coal and oil consumption is that they will soon be depleted as energy sources.
The annual supply of carbon from consumption of fossil fuels, cement production and deforestation is estimated to be seven billion tonnes per year. More than three billion tonnes of this ends up in the atmosphere each year. Global efforts are now underway to develop energy sources that are sustainable in the long-term.
As it is already an established and effective energy source, interest in wind power has grown significantly in recent years. Wind is today one of the few realistic alternatives to fossil fuels and nuclear power. Many countries around the world should be able to generate a substantial part of their energy from wind power.
The problem to date has been that the energy provided by individual wind turbines has been insubstantial due to its small scale. New and larger-scale solutions have however made it more feasible. The trend towards increasingly larger and more effective wind turbines is rapidly making them a profitable investment. Rising energy prices, particularly for green electricity, are also contributing to the profitability of wind power investments.
Denmark is currently the global forerunner on the path to developing a wind power-based society. Some 20 per cent of Danish energy currently is now wind-based.