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Energy Saving Certificate (ESC) System

Turn your energy savings into income
Sign up now!

Did you know that your energy reforms can generate income for you?

If you completed a project, some refurbishment work or an installation in 2023 or you’ve done so since then, you can certify your activity and recover part of the money you’ve invested through the ESC system.

Earn extra income

Reduce your energy costs

Reduce your environmental impact

Enhance your reputation and brand value

The ESC System process

Effic, as the delegated party, manages and applies for the ESC to enable you to obtain an economic benefit in a simple and secure manner.

Explanatory DiagramExplanatory Diagram

What are the steps to be taken to monetise energy savings?

Effic takes care of the entire process. All you have to do is sign the ESC agreement and provide us with the documentation.

Do you have any queries?
Sign the ESC agreement with us
Start the process by signing the ESC agreement with us. This agreement sets out the terms for the monetisation of your energy savings
Send the documentation
Provide the required documentation, such as the installation certificate and the technical report.
Verification of the energy savings
We perform a thorough verification of the energy efficiency measures implemented to confirm their effectiveness.
CAE request
Effic, acting as a delegated entity, requests the issuance of CAE certificates based on the quantified energy savings that validate it.
Monetisation of the savings
Once the ESC has been obtained, we’ll compensate you financially in keeping with the energy savings achieved.

Do you want to be the next one?

The relationship with Effic has been cordial, fluid, and above all practical. To the extent that I have recommended Effic to carry out the rehabilitation of the building where I live.
Paco replaced the central domestic hot water boiler with an aerothermal system and generated an energy saving of 179 MWh/year. Thanks to the CAE system, he managed to recover 22.3% of the initial investment.
PacoOwner of a building with 77 apartments in Madrid
We chose Effic because they understood us very well from the beginning... everything, from what was proposed to us initially to contracts and everything, they have fulfilled everything we have asked of them.
The community renovated the SATE facade and installed individual heat pumps, generating an energy saving of 943 MWh/year. Thanks to the CAE system, she managed to recover 7.27% of the initial investment.
LauraPresident of a community building with 92 apartments in Madrid
I was worried that improving the energy efficiency of the building I live in would be an overwhelming task. But the EFFIC team made the whole process incredibly simple. From the initial assessment to proposing solutions, each step was handled professionally and without complications.
His company replaced the industrial warehouse lighting and generated an energy saving of 216 MWh/year. Thanks to the CAE system, he managed to recover 30.8% of the initial investment.
Jose LuisCompany director in Málaga
The Effic team not only brought technical expertise and knowledge but also made an effort to demonstrate to us why this rehabilitation was essential for our building and our future. They responded to all our questions and provided us with solid evidence of the benefits we would obtain.
Her company replaced the central heating boiler with a central aerothermal heating system in cascade and generated an energy saving of 404 MWh/year. Thanks to the CAE system, she managed to recover 14.1% of the initial investment.
LucíaRetail business owner in Barcelona

Why choose our company?

Effic, as a delegated party approved by the Ministry, provides you with the guarantees to transform your energy rehabilitation project into a worry-free experience with profitable results.

  • Comprehensive service

    As leaders in the rehabilitation of buildings in Spain, our services range from the initial study to the management of the ESC and the search for subsidies.

  • Tailored financing

    We help you obtain flexible financing with competitive conditions and up to 24 months of grace period.

  • Validated quality

    AENOR’s certificates endorse our quality and energy management. Approved by the MITECO to certify energy savings.

  • Experience and scope

    With over 20 years and 50,000+ projects in 3,000+ municipalities, we offer unmatched solvency and reach.

Why choose our company?

We’re your trusted manager

AENOR Quality Management System Certificate

We run a quality management system in accordance with the ISO 9001:20215 Standard. ER-0080/2024

Aenor logoIqnet logo

AENOR Energy Management System Certificate

We run an energy management system in accordance with the UNE-ISO 50001:2018 Standard. GE-2024/0010

Aenor logo

Approval delegated party by the Ministry for the Ecological Transition and the Demographic Challenge (MITECO)

To certify the energy savings generated by means of the ESC System

Ministry for the Ecological Transition Logo

Contact us to obtain personalised help

We’ll call youLeave us your details and we’ll get in touch with you as soon as possible to answer your questions and help you with whatever you need.*Mandatory data
Call usWe’ll be happy to take your call on 900 92 30 30 from 9 am to 6 pm from Monday to Thursday or from 9 am to 2 pm on Friday.
Write us an e-mailSend an e-mail to cae@effic.es and we’ll get back to you as soon as possible to help you with whatever you need.

Frequently Asked Questions

To obtain further details, you can visit the Ministry’s frequently asked questions page.

It is a mechanism, promoted by the government of Spain, that allows companies and individuals to obtain economic benefits through the sale of certified energy savings.

An Energy Saving Certificate (ESC) is an electronic document that guarantees that, after carrying out an energy efficiency action, a new final energy saving has been achieved.

(Royal Decree 36/2023, of January 24, article 2.b)

1 ESC = 1 kWh

According to the Ministry for the Ecological Transition and the Demographic Challenge, any action that saves energy can generate ESC. These actions are divided into two types:

  • Standardized projects:

    • Defined in a catalog of actions established by the Ministry
    • Predefined list of documentation to be provided
    • The verification process is simpler, shorter, and more economical
    • Download full catalog

  • Unique projects:

    • Specifically designed for each project

  • Industrial

    • Industrial refrigeration
    • Compressors
    • Thermal systems
    • Industrial insulation
    • Pumping

  • Tertiary

    • Building envelope
    • Heating and cooling equipment
    • Deep rehabilitation
    • Lighting
    • Control and automation

  • Residential

    • Building envelope
    • Solar thermal energy
    • Heat pump
    • Deep rehabilitation
    • Control and automation

  • Transportation

    • Telemetry
    • Geopositioning
    • Carpooling
Energy Saving Certificates (ESC) certify and monetise energy savings achieved through energy efficiency improvements. These certificates can be sold or exchanged on the market by delegated and reporting parties, enabling the companies or individuals that generate them to obtain economic benefits.

In order to calculate the energy savings of your activity, the activity itself must first be analysed, in other words, it must initially be determined whether it’s singular or standardised and the corresponding calculations must be made upon this basis. The calculations can vary significantly from one activity to another, as the energy saved by replacing heat pumps, for example, isn’t the same as that saved by insulating façades. The final calculation must deliver a value expressed in KWh/year, which is the unit of measurement of energy saved in a whole year due to the energy improvement.

To view real models of how the energy savings of standardised activities are calculated, you can click on the following link and visit the catalogue of files on standardised activities published by the MITECO, which explains the calculation to be carried out:

BOE-A-2023-16940 Order TED/845/2023 of 18 July approving the catalogue of standardised energy efficiency measures.

Generally speaking, the following requirements must be met for an activity to qualify for the generation of ESC

  • It mustn’t have been launched before 26 January 2023
  • It must be executed in Spain
  • It must have generated savings with respect to the initial situation (new installations are generally not included, they are always replacements)
  • The activity mustn’t have undergone any change of use during its execution

However, even if they meet all these requirements, the activities must be individually examined to assess whether there are any particular constraints that may limit their options of obtaining an ESC.

The price of the energy savings to be charged by the initial owner will vary, depending on several factors:

  • Market supply and demand
  • The sector of the activity
  • The type of activity (singular or standardised)

The prices are determined by kWh/year or MWh/year (=1,000 kWh/year). Moreover, the prices are not fixed, given that, as mentioned above, they will increase or decrease, depending on the supply and demand.

An ESC has a single value of 1kWh of final energy consumption savings (Royal Decree 36/2023 of 24 January, article 8.2).
A CAE has a unique value of 1kWh of final energy consumption savings (Royal Decree 36/2023, of January 24, article 8.2).
Yes, but only by reporting parties (RPs) and delegated parties (DPs) (Royal Decree 36/2023 of 24 January, article 8.1; Order TED/815/2023 of 18 July, article 17.2).
Only a reporting party (RP) or delegated party (DP) to which an ESC has been issued or which has acquired it through a legal purchase and sale transaction (Royal Decree 36/2023 of 24 January, article 2.i and article 8.1).

Yes, if you intend to carry out an energy efficiency activity liable to generate final energy savings.

In this case, you may be regarded as an Energy Savings Owner, in accordance with the provisions of article 12.1 of Royal Decree 36/2023 of 24 January establishing an Energy Saving Certificate system.

The above energy savings may be transferred to a third party by means of the signing of a private covenant or agreement or directly to an RP or DP by means of the signing of an ESC Agreement (Royal Decree 36/2023 of 24 January, article 12.1; Order TED/815/2023 of 18 July, article 11).

The owner of the energy savings is the natural or legal person of a public or private nature which makes the investment in the energy efficiency activity with the aim of obtaining energy savings for itself or a third party, or the natural or legal person to which the savings generated by said activity have been assigned (Royal Decree 36/2023 of 24 January, article 2.f).

In this case, you may be regarded as an Owner of Energy Savings, in accordance with the provisions of article 12.1 of Royal Decree 36/2023 of 24 January, establishing an Energy Saving Certificate system.

The above energy savings may be transferred to a third party by means of the signing of a private covenant or agreement or directly to an RP or DP by means of the signing of an ESC Agreement (Royal Decree 36/2023 of 24 January, article 12.1; Order TED/815/2023 of 18 July, article 11).

Only entities regarded as reporting parties or entities which have been accredited as delegated parties can apply for verification of their energy savings by the savings verifier. Neither the owner of the savings nor any other agent of the system without the status of a reporting or delegated party may request verification of the savings of an executed activity (Royal Decree 36/2023 of 24 January, article 12.2; Order TED/815/2023 of 18 July, article 13).
The minimum size of the file to apply for the issuance of an ESC is 30 MWh, which can be covered by the sum total of the savings from the different (standardised and/or singular) activities included in the application (Order TED/815/2023 of 18 July, article 14.6).

The body or entity responsible for energy efficiency in the Autonomous Community in which the activity generating the energy savings has been carried out (regional manager).

To do so, the reporting or delegated party must submit an application for the issuance of an ESC to the regional manager, together with a file that includes the verifier’s Favourable Opinion and report (Royal Decree 36/2023 of 24 January, article 13).

All energy supplied to industry, transport, households, services and agriculture. It doesn’t include supplies to the energy transformation sector and the energy industries themselves (Royal Decree 36/2023 of 24 January, article 2).

The ESC agreement is an agreement signed by the reporting or delegated party and the owner of the energy savings, whereby the latter assigns the energy savings to the former in exchange for a consideration, thus guaranteeing the incentive effect.

Article 11.2 of Order TED/815/2023 of 18 July establishes the minimum content of this agreement.

Any activity that is linked or related to a new equipment installation or construction will not be eligible for the ESC System, in application of the new Directive (EU) 2023/1791 of the European Parliament and of the Council of 13 September on energy efficiency and amending Regulation (EU) 2023/955.
Generally speaking, the financing of energy efficiency activities whose savings are converted into ESC will be compatible with public aid and subsidy programmes, except for those financed by the FNEE (Order TED/815/2023 of 18 July, article 14.8).

Turn energy savings into income

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