AbstractResource allocation in the energy sector of the United Kingdom is a difficult area to plan, because demand and supply projections need to embrace both the large private sector oil industry and the public sector fuel industries. In addition, relationships between the latter are complex as they involve both competition and co‐ordination. One approach to the problem has been to find common ground in the concept of marginal cost pricing, but there are practical difficulties in application. Government has encouraged the use of analytical techniques, such as corporate planning, by the fuel industries as a means of co‐ordination in areas where market mechanisms may no longer always be effect