A method and arrangement for limiting an electric power required by at least two electric loads, each of which has a predetermined priority level, the arrangement comprising means (31, 32, 33) for monitoring a total electric power required by the at least two electric loads (21, 22, 23), and means (31, 32, 33) for reducing, in a priority-level-wise manner, individual electric powers required by the electric loads (21, 22, 23) having the predetermined priority levels by starting from electric load or loads having the lowest priority level and proceeding, one priority level at a time, towards the highest priority level until the monitored total electric power does not exceed a predetermined threshold value.
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