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CAE system · Frequently asked questions

Who can benefit from CAE.

Who the owner of the energy saving is and in which cases they can cede it in exchange for consideration.

Can an individual benefit from CAE?
Yes. Any individual who carries out a savings-generating action (e.g. installing an air-source heat pump) owns the saving and can cede it to an SO/SD in exchange for consideration.
If I'm neither an SO nor an SD, are CAE of interest to me?
Yes, if you are going to carry out an energy-efficiency action: as the owner of the saving you can cede it through a CAE agreement (to an SO/SD) or a private cession contract (to an intermediary) and be paid for it (RD 36/2023, art. 12.1).
Can a company monetise its savings?
Yes, any company that invests in efficiency (lighting, HVAC, processes, fleets…) can cede the savings. For large projects not in the catalogue, via a non-standard action.
Can a homeowners' association generate CAE?
Yes (building envelope, windows, centralised boilers, etc.). The agreement must be signed by the president with a digital certificate (mandatory for applications from 15/12/2024) or by the property manager with an express mandate from the owners' meeting documented in the minutes.
Can a public-sector entity cede its savings?
Yes, if it has made the investment. The cession may take any legal form (contract, agreement, auction, even the tender specifications themselves with the breakdown of the consideration), provided it includes: determination of the savings, express cession of ownership and onerous consideration.
In a rented home, the owner or the tenant?
The owner of the saving is whoever makes the investment. If the landlord pays for it, it is theirs; if the tenant pays for it, it is the tenant's. It is advisable to document this (invoice in the name of whoever invests).
Renting and leasing? (criterion in force since 15/07/2025)
Renting (operating lease): the owner of the saving is the supplier of the asset, who must demonstrate that they pass part of the income on to their customers. Finance lease: the owner is the lessee (end user). These are arrangements treated differently in the CAE system.
Can the installer cede its customers' savings?
Only if it has first acquired ownership through a private cession contract signed with the customer (the original owner). Important: in agreements signed from 15/12/2024, only one intermediary at most is allowed between the original owner and the SO/SD.
Can a company in the energy sector generate eligible savings?
Yes, provided the saving does not come from the energy transformation, transport or distribution itself. Eligible examples include renovating its offices or telemetry in its fleet; not eligible are improvements to the refining process or the transmission grid.
Can several actions be grouped in one application?
Yes: standardised actions carried out in the same year and in the same autonomous community can be grouped in a single application, with a single verification opinion for the whole set (if one fails, the opinion is unfavourable for all of them) (Orden TED/815/2023, art. 13.5).

Main sources: official FAQ of the CAE System, MITECO v1.6 (23/04/2026); Real Decreto 36/2023; Orden TED/815/2023; Orden TED/845/2023; Orden TED/133/2026; 2026 market references. This text is informational and has no legal value; the applicable regulations always prevail.

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