A catalogue of contracts under the JOULE I programme has been published by DG XII. The JOULE specific programme of RTD in the field of non-nuclear energies and rational use of energy (1989-1992) was established by a Council Decision of 31 March 1989 with an overall budget of ECU 122 million. Its aim was to develop non-nuclear energy technologies, including the exploitation of solid fossil fuels and new and renewable sources of energy, and to promote the efficient and rational use of energy so as to increase the security of energy supplies and reduce imports without damaging the environment. The following subprogrammes were included: - Energy systems modelling, with special emphasis on energy-environment and energy-economy interactions; - Improving the efficiency of energy generation and use in buildings, industry and transport; - Fossil fuels (optimum and clean use, improvement in hydrocarbon exploration and exploitation techniques); - Continued development of renewable energy sources (wind, photovoltaics, biomass) and geothermal energy. The present volume completes and updates the first edition of the catalogue published in 1991. The budget was increased substantially during the course of JOULE I, reaching a total of ECU 146 million, which allowed many projects to be extended and new ones to be introduced. Other projects evolved during their execution in response to new information; this catalogue describes them in their final form. Hence, though the approach used in the first edition has been retained, the catalogue now reflects the final structure of the programme. For each contract, the 545-page catalogue provides information on the objective of the project, a brief description of the research to be carried out, the names and addresses of the scientific coordinators (not necessarily the administrative coordinators) plus a list of the other major participants.