Such a temperature rise would have catastrophic consequences, but such an outcome is not inevitable: clean, lowcarbon power generation technologies exist and are already making a huge difference.
Wind is one of them. Wind energy is clean, renewable and fast to install, thus making it an obvious choice to meet growing energy demands at the same time avoiding substantial greenhouse gas emissions. In an era of growing constraints on the supply of fresh water, wind also has the advantage of consuming no water in the production of electricity, in marked contrast to conventional energy forms.
A new energy model is therefore possible. The Copenhagen Climate Conference presents world leaders a tremendous opportunity to make a difference for our collective future. At Vestas, we urge our leaders to take two strong measures to rapidly accelerate the transition to a lowcarbon energy future:
First, the Copenhagen Climate Conference must set clear and ambitious targets for the reduction of C02 emissions, with intermediate targets for the short-, medium- and longterm. We cannot wait any longer. The time is now for action.
Second, the Conference outcome must lead to a price on carbon sufficiently high and stable to change people's behaviour and investment decisions. This is an indispensable condition to encourage substantial and sustained additional private investment that will rapidly accelerate "green" growth.
The future of our societies will depend on our ability to optimize the energy mix through the use of readily available, clean and inexhaustible resources. For example, if the right policies are put in place, wind energy could account for 10 percent of global electricity demand by 2020 - thus eliminating the emission of 1,500 million tons of C02 every year - equivalent to removing 625 million cars from the road in Europe every year.
There's not much time left but solutions to global warming do exist, and wind energy has an essential role to play. In Vestas' home country of Denmark, wind energy already covers 20 percent of the country's electricity consumption. Wind is an energy alternative that is for real.