What Is the RI and What Is the REA? Differences, Obligations and When You Need Each One (or both)

12/01/2026

RI / REA

Understanding what the RI is and what the REA is goes far beyond complying with an administrative requirement: it is the first step towards building a safe, well-organised industry prepared for growth. These registers are the foundation that supports the legality, safety and capacity for evolution of any industrial company. When they are properly managed, they provide peace of mind; when they are not, they inevitably end up causing problems.

By Ana González, CEO and Agricultural Engineer – Industrial consultant in energy efficiency and grant management at AGB Ingeniers

 

Throughout my professional career, working alongside industrial, agri-food and logistics companies in the Valencian Community, I have seen that there are two concepts that generate far more confusion than they should: the Industrial Register (RI) and the Agri-Food Industry Register (REA). Not because they are inherently complex, but because for many years they have been treated as a mere formality—something that “must already be done” or that is only reviewed when a problem arises.

The reality is very different. The Industrial Register (RI) is a mandatory register for all industries, regardless of their sector, size or activity. It is the general framework through which an industry is identified before the administration, and it is where the legalisation files of industrial installations that make its operation possible are grouped.

The RI is not an abstract register. In practice, it is the administrative structure that provides legal coverage to the industry and all its technical installations: electrical systems, thermal installations, fire protection systems, gas, compressed air, APQ facilities, among others. Each of these installations is legalised in accordance with its specific regulations and is linked to the company’s RI. Without an RI, an industry does not fully exist from a technical and administrative legal standpoint.

The REA, on the other hand, is a specific and additional register, reserved exclusively for the agri-food industry. It does not replace the RI, but rather complements it. Every agri-food industry must be registered in the RI, like any other industry, and must also be registered in the REA.

The REA acts as a comprehensive scan of agri-food activity. It does not simply identify the establishment, but goes into detail about industrialised food production: processes, production lines, capacities, flows and, very especially, the machinery involved in each stage of the process. It is a much more exhaustive register, designed to guarantee traceability, sanitary control and food safety.

This distinction is essential and is often the source of many errors. The RI is the base register, common to all industries, and is essential for the legalisation of installations. The REA is an additional register, specific to the agri-food sector, which analyses productive activity at a much deeper level. It is not a matter of choosing one or the other: in the agri-food industry, both are required.

I frequently encounter agri-food companies that have their installations legalised and believe that this is sufficient, without realising that the REA requires full consistency between the productive reality, the installed machinery and what is recorded in the register. Changes in production lines, capacity expansions, incorporation of new machinery or modifications to processes must also be reflected in the REA. Failing to do so creates an administrative inconsistency that sooner or later comes to light.

The obligation to be registered in the RI does not depend on the size of the company. This is a widespread and completely mistaken belief. Whether we are talking about a small family-run industry or a large production plant is irrelevant: every industry must be registered in the RI. In the case of the agri-food industry, the REA is also mandatory, regardless of production volume.

The problem of not having the RI—and where applicable, the REA—properly managed does not usually appear immediately. It emerges at the least convenient moment: when applying for public funding, planning an expansion, undergoing an inspection or during a change of ownership. At that point, the lack of consistency between the industrial reality and what is recorded in the registers becomes a serious blockage. What could have been handled with technical judgement from the outset suddenly turns into an urgent issue.

From my experience, the biggest mistake is treating the RI and the REA as simple administrative procedures. They are not. They are a legal, technical and productive snapshot of the industry—one that must be kept up to date and aligned with reality. When it is not, problems arise, almost always at the worst possible time.

At AGB Ingeniers, we approach the RI and the REA as part of a global vision of industry. We do not separate them from the legalisation of installations, from energy efficiency, or from the company’s growth strategy. We know that any company wishing to invest, modernise or access grants needs a solid foundation—and that foundation begins with correct registration.

Having the RI and, where applicable, the REA properly managed provides something that is often undervalued: peace of mind. Peace of mind during inspections, audits, grant applications and any future changes. It allows companies to grow safely, plan investments with confidence and demonstrate compliance with applicable regulations.

This first article in the series was created precisely with this objective: to clarify concepts, correct common mistakes and help companies understand that the RI and the REA are not a problem, but a tool. A tool that, when used correctly, facilitates industrial development and opens doors rather than closing them.

In upcoming content, we will explore which industries are required to register, which mistakes lead to sanctions, how these registers relate to the legalisation of installations and what happens when an industry grows, undergoes refurbishment or changes its activity. Because understanding the RI and the REA is not just about complying with a regulation—it is about preparing industry for the future.

If reading this has made you wonder whether your industry’s situation is properly regularised, I encourage you to review it. At AGB Ingeniers, we analyse each case with technical rigour and strategic vision, because industry needs more than paperwork: it needs safety, clarity and professional guidance.

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