In tho sarticle,we propose to apply a hybrid method called DYNAMOP (DYNAmic programming using Metaheuristic for Optimization Problems) to solve the Unit Commitment Problem (UCP). DYNAMOP uses a representation based on a path in the graph of states of dynamic programming, which is adapted to the dynamic structure of the problem and facilitates the hybridization between evolutionary algorithms and dynamic programming. Experiments indicate that the proposed approach outperforms the best known approach in literature.