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CAE system·Castile and León

Process your CAEs in Castile and León.

Sanwa manages and buys Energy Savings Certificates (CAE) generated by efficiency actions in Castile and León. We calculate the savings, verify with an ENAC-accredited body, connect with Sujetos Obligados and Delegados, and pay you the same week the CAE is issued. The service is free for you: you never pay anything at any point.

Request a free assessmentHow the CAE system works
Regional framework

Processing with the competent body of Castile and León.

Reference body

Ente Regional de la Energía de Castilla y León(EREN)

EREN, the regional body under the Consejería de Economía e Industria, coordinates energy processing across the nine provinces of the community.

The regulatory framework is national —Real Decreto 36/2023, which governs the Energy Savings Certificates System in Spain— and is applied uniformly in Castile and León, coordinated by the regional manager before issuance by MITECO.

How Sanwa works

Short turnaround, immediate payment and full control of the case.

Turnaround

2–3 months

From case registration to CAE issued and settled.

Payment

Same week

We settle the same week the CAE is issued.

Fee

At your discretion

On each case you decide how much fee to withhold.

Visibility

100% live

Status, kWh, amounts and documents in real time.

Local coverage

We operate across all of Castile and León.

We work with installers, ESEs, engineering firms and industrial companies based in or operating anywhere in Castile and León. Capital and main cities:

Coverage across the 9 provinces of the community: Ávila, Burgos, León, Palencia, Salamanca, Segovia, Soria, Valladolid and Zamora.

2.4 GWh certified/month·+400 clients across Spain
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  • Valladolid
  • Burgos
  • Salamanca
  • León
  • Palencia
  • Zamora
  • Ávila
  • Segovia
  • Soria

Non-exhaustive list. Sanwa processes cases in any municipality of Castile and León.

Frequently asked questions

CAEs in Castile and León: common questions.

Who regulates Energy Savings Certificates in Castile and León?
The framework is national: Real Decreto 36/2023 governs the CAE system across Spain and final issuance is handled by MITECO. In Castile and León it is coordinated with Ente Regional de la Energía de Castilla y León (EREN) as the regional reference body. Sanwa handles all the liaison.
How long does it take to process a CAE in Castile and León?
The average turnaround is 2 to 3 months, from case registration to CAE issuance and settlement, with verification carried out by an ENAC-accredited body.
Which actions generate CAEs in Castile and León?
Mainly aerothermal energy, photovoltaic self-consumption, efficient LED lighting, thermal envelope improvements and other energy-efficiency measures carried out by companies, installers and industries in Castile and León.
In which areas of Castile and León does Sanwa work?
We provide coverage in the provinces of Ávila, Burgos, León, Palencia, Salamanca, Segovia, Soria, Valladolid and Zamora, with a presence in Valladolid, Burgos, Salamanca and León, and we process cases in any other municipality of the community.
When do you get paid for CAEs in Castile and León?
Sanwa settles the same week the CAE is issued, and you decide the fee you withhold on each case.
How much does it cost to process a CAE in Castile and León with Sanwa?
Nothing: it is a free service for the client, you don't pay before, during or after. Sanwa's business is in negotiating the savings with the Sujetos Obligados and Delegados, and on top of that you are the one who decides the fee to withhold on each case.

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