Energy and its ramifications make up a large part of the discussions in the agendas of various countries. Along with the energy resource, energy efficiency is also being reported in studies on ways to improve its use in industries. In the food industry, in particular, its use is intensive in its manufacturing processes, and thus the indicators that measure the use of this feature have become important. The paper uses the method of a systematic literature review to search for data related to the food industry and what are the energy efficiency indicators adopted in the processes. The objective of the research is to report which are the indicators of energy efficiency adopted in the food industry and the advances achieved with its adoption. The results indicate a broad field of research in this industry sector because the indicators used in measuring process efficiency are still poorly understood and adopted.

Governments and private companies have increased efforts to identify effective actions for improving energy efficiency in manufacturing processes. The objective of this work is to improve the decision-making process by increasing the quality of information related to energy indicators in the food industry. This research involves developing a systematic literature review (SLR) to identify energy efficiency indicators in the food industry, which serve as inputs for a sectoral evaluation based on multicriteria techniques. The SLR identified six criteria evaluated by food industry experts, which form the proposed basis for evaluating the performance of related sectors. These criteria are: benchmarks, key performance indicators, framework, monitoring, ISO 50001, and information communication technologies (ICTs) in sectoral evaluations. The criteria were evaluated by experts using the Analytic Hierarchy Process (AHP), which prioritizes the most important food industry issues using an evaluation scale. Weights were attributed to each issue and positioned according to the Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE) HIGHLIGHTS  Indicators relating to four groups were identified in food industry and manufacturing literature.  Results suggest greater concern of the food industry with the technologies of Industry 4.0. • A differentiated approach in the food industry with method multi-criteria AHP and PROMETHEE. • Energy indicators are poorly understood by the food industry, and therefore have not been implemented. 2 Angela, M.P.; et al.