The Kyoto Protocol requires a 5.2% reduction of greenhouse gas emissions from developed countries. This is an important starting point both to prevent climate change and to start to implement new Sustainable Energy policy for a Sustainable Economy. At the local level (from regions to cities) lower cost/risk energy portfolios can be developed by adjusting the conventional mix of energy sources and by including low cost Rational Use of Energy and Energy Efficiency tools, greater amounts of fixed- cost Renewable Energies and by using the additional financial resources coming from carbon finance. The carbon market can increase investment in renewable energies. This paper proposes a new financial instrument called the Kyoto Bond. Kyoto Bonds w...