[en] In 1978 the Royal (Dutch) Institute of Engineers (KIVI) published a summary of two of their reports: ''The costs of nuclear power in the Netherlands'' (INIS RN 471108) and ''The costs of energy from coal'', in which the results were both presented and compared. Both studies have been updated and the current report is an updated version of the summary. Following an introductory chapter, chapter II first describes the models used in the study - a conventional 600 MWe coal fired power plant and a 931 MWe boiling water reactor - and then outlines other alternative energy sources of possible interest to the Netherlands in the future. In Chapter III the various components of the total costs of electricity production from coal and nuclear fuel are considered and compared. Current or expected Dutch norms regarding safety and environmental demands are taken into consideration. During the first year of operation of the respective plants the costs are shown to be comparable but thereafter nuclear energy is the cheaper source. Chapter IV presents the effects caused by variations in the most important parameters and chapter V discusses the potential future changes in the starting points of the studies. In the final chapter the calculations are compared with those from abroad. (C.F.)