Does an energy prognosis reveal more about its author, than about the future of energy The fact that there is a lot of scepticism toward extremely varying and often diametrally opposed forecasts on the area of energy suggested to look at the 'psychology of forecasts and prognosis'. Representatives of the fields involved were invited to Schloss Haigerloch in 1986 in order to analyse the influence of the environment on the result of a prognosis. Linking up with this subject the GEE-prognosis-workshop held in 1987 looked into the fundamental question of 'Progress in prognostication'. Three recent studies which were supplemented by a historic study on deviations between prognosis and the actual facts, were presented at the workshop. They supplied a comparative evaluation of national and international energy prognostications. Papers from both meetings are contained in this volume providing a survey on the state of energy prognosis. (orig.).