The objective of the dissertation is to develop a conceptual model of self-assessment for organizations that search for excellence in innovation management to verify at which level of maturity they are concerning the ABNT NBR ISO 56002:2020 standard clauses and items. It seeks to demonstrate the model s applicability by developing an empirical study on one of the companies from the electric power sector – Light SESA. The research can be considered applied, methodological and descriptive. The methodology comprises: (i) literature review and documentary analysis on the central research themes; (ii) definition of the analytical structure according to the Analytic Network Process (ANP) method and the structure of the ABNT NBR ISO 56002:2020 standard; (iv) application of the ANP method for assigning weights to the 28 normative elements with the participation of experts in the field of innovation management; (v) elaboration, pre-test, and application of the self-assessment tool in Light SESA, asking the innovation manager and collaborators to evaluate the level of maturity of the company in relation in relation to the Standard clauses and items, and using the fuzzy logic; (vi) employment of the Importance-Performance Analysis (IPA) method to identify the requirements that should be prioritized aiming to improve the company s innovation management system. As the main result of this dissertation, the assessment model of innovation management systems of companies based on ABNT NBR ISO 56002:2020 Standard can be highlighted from the perspective of supporting internal decision-making processes related to the continuous improvement of their innovation management systems. The case study in Light SESA could demonstrate the self-assessment model s applicability and managerial contributions, helping the company to identify improvement opportunities of its current innovation management system.