A new methodology for studying the effect of wind power intermittency on electric power systems is proposed in this paper. The proposed stochastic method is based on the optimal power flow and sensitivity analysis techniques. These techniques are applied on a computational tool capable of allocating the intermittent energy with an exhaustive search technique with low computation time. The methodology was applied to reduce losses in the distribution systems of 34 and 70 buses. The results are compared with fixed power allocation considering the mean power of three different conditions: the average wind speed; generator capacity factor and maximum generator capacity. They showed that a stochastic method that considers each value of wind speed is necessary to determine the correct bus to allocate intermittent wind power. (C) 2018 Elsevier Ltd. All rights reserved.