In January 2005 (revised in November 2005), a US non profit Green Market International released this study on the possible role of solar water heatering in international efforts to reduce GHG emissions for developing nations. The Kyoto protocol’s Clean Developing Mechnisms (CDM) provides the opportunity for carbon trading to support environmental protection and economic development? Markets of Solar water heating is described in 6 developing countries, namely Barbados Brazil China India Mexico and South Africa.