The present study aimed at evaluating different lighting systems (Fluorescent lamps - FLUO and LED light bulbs) in a commercial broiler house, Dark house. The economic analysis of the Net Present Value (NPV) was used in the benefits of the generated cash flows, and in the Payback period. The economic evaluation of the two lighting systems was carried out using the specifications of the different types of lamps, and the energy consumption was recorded in three commercial broiler farms. The cash flow was evaluated comparing the information of the fluorescent lamp (FLUO) and light emitting diode (LED) systems. The replacement of fluorescent lamps by LED lamps can generate considerable savings of electricity during the production cycle of the broilers, besides presenting suitable conditions for the rearing environment inside the houses. However, with the current cost of LED bulbs, the system has proven to be unsuitable within the lamp life cycle.