In this paper we consider the important problem of economic operation of power systems: how to operate a power system to supply all loads at minimum cost. Here we assume that we have some flexibility in adjusting the power delivered by each generator. Of course, if we have a "peak" demand for power that is so large that all the available generator capacity must be used, there are no options. But usually the total load is less than the available generator capacity and there are many possible generation assignments.
In this work, genetic algorithm (GA) solution to economic dispatch problem of Ambarlý Power Plant is presented. An advantage of the GA solutions is that they do not impose any convexity restrictions. Another advantage is that GAs can be very effectively coded to work on parallel machines.