This work focuses on a teaching learning-based optimization (TLBO) algorithm for solving economic load dispatch (ELD) problems. The TLBO technique is a recently developed optimization algorithm based on the influence of the teaching-learning process. The best possible dispatches scheduled of the thermal generator are finding using the TLBO algorithm that minimization of fuel cost of a given system. To test the effectiveness of the TLBO algorithm, the proposed algorithm has been applied to three and six generating unit systems for fuel cost minimization. The simulation results achieved by the proposed method are better-optimized solutions for fuel cost minimization.