Washington, DC – The Business Council for Sustainable Energy (BCSE) completed its 2011 annual greenhouse gas inventory and its first voluntary purchase of carbon offset credits and renewable energy certificates (RECs) to cover the organization’s 2010 and 2011 emissions. The Council worked in conjunction with its members First Environment, Inc.,Native Energy and Winrock International’s American Carbon Registry to conduct the inventory and to identify high-quality domestic projects to offset its emissions.