Energy efficiency has become one of the most strategically important pillars of European climate, industrial, and economic policy. In the context of the European Green Deal and successive revisions of the European energy efficiency acquis, energy efficiency is no longer framed only as a technical objective but rather as a core governance principle that shapes the design of markets, institutions, and industrial practices. At the same time, energy audits have emerged as a central operational mechanism through which energy efficiency policy is translated into concrete action, particularly within industrial and small and medium sized enterprise contexts. Despite their centrality, the relationship between European level energy efficiency governance and firm level energy auditing remains underexplored in an integrated manner. Much of the existing literature treats energy efficiency policy as a regulatory phenomenon and energy auditing as a technical management tool, without fully examining how they interact as parts of a single multilevel system of governance.

This article develops a comprehensive analytical framework that connects European energy efficiency governance with industrial energy auditing practices, drawing strictly on the provided references from European policy documents, energy efficiency theory, and empirical studies of energy audits in industry. The analysis situates energy audits within the evolution of energy efficiency as a policy concept, showing how the regulatory ambitions of the European Union have progressively redefined what energy audits are expected to achieve, how they are institutionalized, and how their results are used in decision making. Using the European Green Deal, the Energy Efficiency Directive, and recent Commission and European Environment Agency reports as the policy backbone, the article traces how energy efficiency targets and compliance mechanisms cascade down into industrial operations. Simultaneously, it integrates detailed evidence from case studies and reviews of energy auditing in small and medium sized enterprises and industrial facilities to illustrate how firms interpret, implement, and sometimes resist these policy expectations.

The results show that energy audits function not merely as diagnostic tools but as key governance instruments that mediate between European level objectives and local industrial realities. They create knowledge, structure managerial attention, and legitimize investment decisions, but their effectiveness is constrained by organizational barriers, financial limitations, and policy design gaps. The discussion highlights the need to move beyond a narrow efficiency logic toward a more institutionally informed understanding of how energy audits operate within European energy governance. The article concludes that strengthening the alignment between policy frameworks and auditing practices is essential for achieving the ambitious energy efficiency goals of the European Union.