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Energy Savings Certificate (EACs)

An Energy Savings Certificate (EAC) is an electronic document that guarantees that, after carrying out an energy efficiency action, new energy savings have been achieved .

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Energy Savings Certificate: Guarantee of Efficiency and Sustainability

Energy Savings Certificates (EACs) are documents that guarantee and quantify the reduction in energy consumption achieved by certain energy efficiency actions implemented by consumers, assigning them to an owner (Obligated Entity) in a unique way.

Verification of decarbonization certificates and targets

The Energy Savings certificate will have an impact on an increase in energy efficiency projects that contribute to and are essential for meeting the objectives of decarbonisation and competitiveness in the EU.

In addition, the verification of energy savings certificates offers consumers the opportunity to benefit economically from the energy saving and efficiency measures implemented, both by reducing energy costs and by making the energy savings achieved profitable.

There are two types of actions that can become CAEs:

Standardised actions. In this modality, there must be a file that contemplates the action. The methodology for calculating the savings is already validated in the file itself
Singular actions. This is an action that cannot be justified with the sum of several files and that, due to its complexity and/or amount of savings, it is worth going to the singular action modality.

Flowchart of the CAEs System

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Related Standards:

UNE-EN ISO 50001 Energy management systems
UNE-216701 Classification of energy service providers
UNE-EN 17669:2023 Energy performance contracts
ISO 50047 Determination of energy savings in organizations
ISO 17741 General technical rules for measurement, calculation and verification of energy savings of projects

What does CAE verification consist of?

Objective of the CAE certificate verification:

Verify the annual energy savings achieved, by reviewing the veracity of the action in terms of energy efficiency;
Verify that the information and documentation provided meets the requirements established in the catalogue or in the existing regulations, is complete and adjusted to the facts.
To issue a report and a verification opinion.

Who are the agents involved?

Obligated Entities (SO). They must comply with a minimum savings obligation (defined in Ministerial Order) in order to apply for the issuance of CAE.
Delegated Subjects (SD). They must meet CAE savings commitments defined by a delegation agreement with each OS (intermediary). They must also be accredited by the Directorate General of Energy Policy and Mines (DGPEM).
CAE System Intermediaries (Installers/Subcontractors). They are actors hired by the SOs or SDs to achieve savings, seek or execute energy saving actions. They cannot request files or buy/sell or liquidate.
End users. They are the beneficiaries of Energy Saving. They are the users of the installation, equipment or element where the energy efficiency action has been carried out, and therefore those who enjoy the improvement. They usually coincide with the person who carries out the investment of the action and are, therefore, the original owners of the energy savings. Through the CAE Agreement, savings pass from the savings owner to the SO/SD. In exchange, there must be a consideration for the end user.
Verifier: Conformity Assessment Body. They are accredited by ENAC. They are responsible for issuing an opinion on the savings achieved, both in standardised actions and in individual actions. There is a different accreditation protocol depending on whether it is a verifier of standardised actions or a verifier of individual actions. The favourable opinion of the verifier is mandatory for the submission of the file for the application for the issuance of CAE to the Regional Manager.
Regional Manager. Validating authority of the CAE System. It is responsible for promoting savings actions in its territory and for issuing the CAE. Each CA must inform the National Coordinator which body will act as Autonomous Community Manager in its territory.
National Coordinator. Supervisory and regulatory authority of the CAE System. Its task is to create an efficient CAE System to meet the objectives of the PNIEC/DEE; the receipt of CAEs issued by the Autonomous Communities and registration in the National CAE Registry; traceability of the ownership of the CAE in purchase/sale transactions; accounting for CAE settlements; reporting to the EU on savings, review and periodic verification of the correct functioning of the entire EAC System; management of the system in those cases in which the energy-saving action exceeds the territorial scope of an Autonomous Community; prepares the system's regulations, including the OM of the CAE Catalogue and its updates.

Sectors and experience of the Certification

AENOR is accredited for the verification of standardised actions and for all types of unique projects (residential, transport, industrial, tertiary and agricultural sectors).

Testimonial

Gabriel Uría González

General Director
URÍA INGENIERÍA DE INSTALACIONES S.A

At URÍA INGENERIA DE INSTALACIONES we have always understood that real energy efficiency is only possible when there is a firm commitment to rigorous measurement and independent verification. For this reason, obtaining the first verification in Spain of a unique performance of the CAE System in the residential sector represents much more than a technical milestone: it is a recognition of the work of our entire team and a way of understanding the energy service based on transparency, quality and responsibility.

Our model is based on accompanying the client from the initial design to the exploitation and monitoring of savings, ensuring that each decision is based on data and not on assumptions. In this context, collaboration with AENOR has been essential. Their participation confirms that we are working in the right direction, providing an independent guarantee that reinforces the reliability of the process and the client's confidence in the results obtained.

The verification, carried out under the IPMVP Protocol and with the technical support of PISA Ingeniería, has allowed us to objectively demonstrate 0.34 GWh of energy savings. This demanding and detailed process underlines something that is fundamental to us: the need for the industry to move towards models where measurement, quality and external verification play a central role.

In the future, we will continue to work to extend this approach to a greater number of projects and consolidate a standard of rigor that brings real value to the market and society. For URÍA, having AENOR as a verifying entity is a guarantee and a boost to continue moving towards a more efficient, reliable and sustainable energy model.