Everybody knows that climate change is one of the greatest threats facing the planet. The costs of failure to act are becoming unthinkable. Yet we know now that if developed countries agree to cut their collective emissions by 30 per cent by 2020, annual economic growth would be trimmed by less than 0.2 per cent - a small price to pay to avoid the potential long-term costs of climate change. Moreover, it is easy to appreciate the positive value of other benefits such as reduced air pollution, security of energy supply at predictable prices, and improved competitiveness through innovation. Now, for the growing number of enterprises and investors committed to combating climate change with renewable energy technologies, here at last is a minutely detailed analysis of the opportunities and obstacles involved in developing a coherent and effective business strategy. Beginning with an in-depth and up-to-date overview of what we know about the climate change issue, the author goes on to an extensive survey of Renewable Energy Sources (RES), both existing and under development. Recognizing that, in the current state of global awareness, the European Union has taken by far the largest steps in tackling the enormous problems entailed by climate change, she explores in unprecedented detail the various 'green' energy incentives and support schemes available under various programs available both at EU level and in each of the 27 Member States. Both project developers and investors will find out here exactly how to: significantly reduce the main market entry barrier - high costs; exploit synergies and avoid negative spillover effects through coordinated action; draw on all available policy levers, fiscal policies, structural and financial market reforms and external action; ensure full coherence between immediate actions and the EU's medium- to longer term objectives; take full account of the global nature of the problem and shape the EU's contribution to international responses;