The goal of the main project was to develop a fuel cell benchmarking procedure with which to evaluate the energy efficiency of whole areas. With respect to buildings, to date, the structure itself had been central to analytical approaches and it is now intended to develop a more comprehensive, integrated perspective on energy efficiency, including potential uses of alternative energies for more effective heating. The research department was responsible for a sub-project which was to compile information on the existing body of research in the areas of saving, storage and supply of heating energy, providing technical and economic data.