The paper analyzes the optimal choice of banks of capacitors steps in case of industrial consumers with variable load. The difficulty of establishing scales is that the load varies greatly and that receptors are widespread in terms of location. This paper proposes a method of calculation as to maintain the power factor at the point boundary limits that does not lead to a penalty due to reactive power absorbed. It is based on measurement and verification requirements for each level of the relevant load. Finally it is presented a scheme to automate the steps.