ISAGEN registers the Amoyá Hydroelectric Project as a Clean Development Mechanism with the United Nations Colombia has the fourth most UN CDM projects of any Latin American country and the eleventh most in the world. The Amoyá River Hydroelectric Project, which will produce 80MW, is the largest CDM project in the energy sector at both the national and international levels. The Secretariat of the United Nations Framework Convention on Climate Change (UNFCCC) registered the Amoyá River Hydroelectric Project being built by ISAGEN as a new project that meets the requirements of a Clean Development Mechanism (CDM). The announcement was made by ISAGEN's Chief Executive Office, Mr. Luis Fernando Rico Pinzón, who indicated that with this recognition, both the Colombian Ministry of Environment and Sustainable Development (the national designated authority) and the United Nations have acknowledged the contribution that this Project makes to sustainable development in Colombia and to mitigating global climate change. The Amoyá River Hydroelectric Project is located in southern Tolima within the jurisdiction of the municipality of Chaparral, some 150 km from Ibagué. The plant will have an installed capacity of 80 megawatts, producing clean energy from a renewable resource (water) and reducing greenhouse gas emissions by 176,600 tons of CO2/year. Benefits ISAGEN's CEO explained that projects developed as CDMs are beneficial for receiving countries and populations in the local areas of influence from an environmental, social and economic point of view. As such, the very purpose of the Mechanism- helping reduce emissions in industrialized countries and contributing to the sustainable development of developing countries- makes these types of projects desirable and necessary. Emissions reduction certificates for the Amoyá Project have been committed to the Netherlands through 2014. Part of the resources to be received from the sale of these certificates will be used by the Company to contribute to the sustainability of the Las Hermosas Canyon through social and environmental investment programs that will help ISAGEN collaborate with the communities in the region. "By measuring the Company's carbon footprint since 2008, ISAGEN is maintaining our installed capacity with a major contribution from competitive renewable energies: hydroelectricity, geothermal sources, wind farms, and more. This important step is just another indication of ISAGEN's commitment to sustainable development that is driving us to become a carbon zero company in the future," stated Luis Fernando Rico Pinzón. Medellín, October 10, 2011. Inés Elvira Vélez Tel: (4) 3165435 ivelez@isagen.com.co Alma Agudelo Tel: (1) 6352400 aagudelo@corporativa.com.co Carlos Andrés Roncancio Tel: (1) 6352400 croncancio@corporativa.com.co