Abstract. This paper discusses the behaviour of energy efficiency in thermal processes of chicken slaughterhouses in Brazil, as they are large consumers of electricity and have few indicators to system monitoring. The work addresses some indicators that are monitored by the slaughterhouse, the main factors affecting the cooling circuit and the technologies that are available in the market for equipment manufacturers. The article proposes measurements in the refrigeration circuit to implement indicator that monitors the power consumption expended to generate the system's cooling capacity and also check and eliminate factors that affect the cooling system to reduce the power consumption. Energy consumption between two slaughterhouses indicates a 49.27% difference. The disclosure of efficiency comparison information may help the national industry to become more efficient and competitive.