Afandi, A.N. Abstract. 2023. This paper proposes the harvest season artificial bee colony (HSABC) algorithm, a novel improvement of the artificial bee colony (ABC) algorithm, for obtaining an economic dispatch solution of a power system based on fuels consumption and emissions produced. A standard model of the power system, the IEEE-62 bus system, is used to show the performance of HSABC using equality and inequality constraints to determine the optimal solution for the economic power system operation. Simulations involving the proposed algorithm show that HSABC has better ability to determine minimum values for the operating cost problem with faster convergence and shorter running time when compared to the traditional ABC algorithm. IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING