  Reducing uplift payments has been a challenging problem for most wholesale
markets in US. The main difficulty comes from the unit commitment discrete
decision makings. Recently convex hull pricing has shown promises to reduce the
uplift payments. However, it has been intractable to obtain the optimal convex
hull price. In this paper, we describe an innovative approach to decide the
optimal convex hull price by simply solving a linear program. We also provide
an example to illustrate the calculation process. The final computational
experiments on a revised IEEE-118 bus system verify the cost effectiveness by
utilizing our proposed approach.
