Good as new

This work describes the process involved in evaluating whether or not to reuse the generator´s original compound excitation system and, if replaced, the type of excitation system that should be installed: compound or potential bus-fed type. It was determined that installing a used steam turbine generator at the plant would be a viable way to reduce manufacturing costs. This work discusses the issues encountered during the evaluation process, the expectations desired, the decisions made, and the outcome achieved as a result of the final decision to replace the existing compound excitation system with a potential bus-fed excitation system.