This report deals with the long range modelling of energy needs in the cement industry. Starting from the analysis already performed for the Québec energy system with the help of the MARKAL model, it is shown how this comprehensive energy supply and demand model can be used to obtain simulations of the future uses of energy and the related choices of production technologies in the cement industry. The possible modifications of the model, and particularly the advantages anticipated from an extension of the analysis to a national or multi-regional level are also discussed.