The measure to encourage participation of ESCO business for companies with core technology may vary on the conditions of preference policy considerations. Accordingly, the three measures are can be suggested, evaluation points for incentives, loan allocated to a separate, and participation with consortium. This study recommends that the evaluation points for incentives is preferred in the ways. If the assumption that the allocation of large amounts of money, the amount of the loan allocated to a separate may be considered as suboptimal.