In January 1993, as part of the Joule II Non-nuclear Energy Research Programme, the European Commission initiated a two-year study of the possibilities for the underground disposal of carbon dioxide. The participants in the study are British Geological Survey (UK), BRGM (France), CRE Group Ltd (UK), IKU (Norway), RWE AG (Gemntny), Statoil (Norway), TN0 Institute of Applied Geoscience (Netherlands) and the University of Sunderland Renewable Energy Centre (UK). The objective of the study is to examine whether carbon dioxide emissions from large point sources, such as fossil fuel fired power stations, can be disposed of underground safely, economically and with no adverse effects on man and the environment. The work programme is divided into 6 areas: Quantity and quality of CO, which may become available for disposal, underground storage capacity, safety and stability of storage, reservoir modelling and enhanced oil recovery, inorganic geochemistry and techno-economic modelling. Due to space limit.ations, only some of the conclusions of the study, relevant to the CO, emissions and storage potential of Europe, are described below.