How to prepare a compliant CAE file
The Energy Saving Certificates (CAE) system in Spain requires a rigorous 10-step process to obtain valid certificates. This guide details each step of the process in accordance with RD 36/2023 and Orden TED/815/2023.
The 10 steps of the CAE file
The complete workflow runs from Draft through to Settlement, passing through ENAC verification, submission on the MITECO Portal and review by the Regional Administrator.
The Commitment Act: the most critical item
The Commitment Act must be signed BEFORE the start of the works (article 8 of RD 36/2023). This rule is inviolable: if it is signed afterwards, the file is inadmissible with no possibility of appeal.
The 9 regulatory documents
Each file requires 9 types of documents: D1 (reference situation), D2 (technical documentation), D3 (invoice), D4 (photographic report), D5 (justification calculation), Commitment Act, Participation Agreement, Favourable Opinion and Verification Report.
The 30 MWh threshold
Article 14.6 of Orden TED/815/2023 requires a minimum energy saving of 30 MWh per file. CertificAhorro automatically checks this threshold and warns if it is not reached.
The S1 form
The official form 'Solicitud de emision de CAE - Estandarizadas' is the entry document that the Regional Administrator reviews. CertificAhorro generates it automatically.
The MITECO naming convention
The file ZIP must comply with the exact naming convention: S1, S2, S2-I, S3-1 to S3-5, AC, AP. A misnamed file triggers an automatic rejection.