The main goal of this paper is to present a new day-ahead energy acquisition model for a distribution company (Disco) in a competitive electricity market environment with interruptible load (IL). The work formulates the Disco energy acquisition model as a bilevel optimization problem with some real considerations, and then studies and designs a genetic algorithm (GA) of this optimization problem too. In order to achieve this goal, a novel two-step procedure is proposed. At the first step, a real model for an industrial interruptible load is introduced, and it is shown that Interruptible load model can affects on the problem modeling and solving. At the second step, Disco energy acquisition program is formulated and solved with this real model. As a result, this paper shows energy acquisition programming model with ILs, and considering real assumptions. The introduced method shows a good performance of problem modeling and solving algorithm both in terms of solution quality and computational results. A case study is carried out considering a test system with some assumptions. Results show the general applicability of the proposed model, with potential cost saving for the Disco.

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