The International Emissions Trading Association and World Bank Carbon Finance are hosting the 2007 Carbon Expo in Cologne, Germany on 2-4 May 2007. On 3 May, NERA Senior Vice President and Environment Group Head Dr. David Harrison delivered a presentation on "Allocation Choices for a Carbon Trading Program." Dr. Harrison's presentation provided an overview of key issues that have arisen in prior emissions trading programs and identified likely future issues for the European Union Emissions Trading Scheme, as well as similar carbon trading programs being developed in the US and around the world. Commentators on Dr. Harrison's presentation and on allocation choices included prominent experts from E.On, Alcan, Morgan Stanley, and Resources for the Future.