Certificados de Ahorro Energético

It is an electronic document that certifies an energy saving associated with an energy efficiency performance. One ESC is equivalent to 1 kWh, so if you save 500 kWh/year, you get 500 ESCs!

This instrument makes it possible to monetise energy savings by recovering part of the cost of energy efficiency investments through a consideration when selling the savings obtained

How do ESCs work?

At Iberdrola we take care of the complete management of the ESCs, so that you only have to worry about enjoying the most sustainable energy at the best price.

Iberdrola buys your generated savings and discounts them for you

The customer will enjoy the ESC discount generated by their energy efficiency performance immediately, without having to wait for Iberdrola to receive it. This discount will be reflected directly on your bill.

Iberdrola converts these savings to ESCs

You don't have to worry about a thing. Iberdrola will take care of all the necessary steps, making sure that your savings are efficiently and smoothly transformed into ESCs.

Why is it for you?

You will finally get a new way to save energy by applying energy efficiency in your everyday life at home.

Your home more optimised than ever

Replace your old boiler, improve the insulation of your home or buy more efficient appliances: you can already benefit from this system by carrying out an energy efficiency project in your home.

Safe savings guaranteed

We compensate you for the energy savings obtained, acquiring the ESC derived from the action, and you recover part of the cost of the investment made in improving your home. It's that simple!

Services that may interest you

We have many services at your disposal that will help you reduce your energy consumption and reduce your environmental impact. In addition, with Aerothermy you can save up to €2,000* per ESCs discount!

Thermal insulation

Reduce your bills with Smart Thermal Insulation and gain in convenience.

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Aerothermy

Efficient technology: heating, hot water and cooling at home.

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*Discount applicable to actions likely to generate ESCs.

Our commitment to a greener future

Sustainability

And energy efficiency

We are committed to the responsible use of resources to generate economic and environmental benefits.

Leadership

In renewable energies

We drive the integration of clean, sustainable sourcing with advanced solutions to reduce carbon footprint.

Innovation

Technology at your service

We have advanced tools to monitor and manage energy savings, allowing you to maximise your savings while being sustainable.

Any questions?

Solve all your queries about energy saving certificates.

Any entity that implements energy saving measures can benefit from ESCs. This includes companies from all sectors, public organisations and individuals. Projects must meet specific eligibility criteria and undergo a verification process to ensure that energy savings are real and measurable.

Projects must comply with a number of technical and regulatory criteria established by the competent authorities. These criteria include demonstrating a significant, verifiable reduction in energy consumption, the use of technologies recognised for their efficiency, and detailed documentation of all stages of the project. In addition, projects must be audited by an accredited body to certify the savings achieved.

In general, the financing of energy efficiency actions whose savings end up as ESC will be compatible with public aid or subsidy programmes, except those financed by the FNEE (Order TED/815/2023, of 18 July, article 14.8).

Companies that generate ESCs can benefit from a number of economic and operational incentives. These include selling certificates in specialist markets, improving their reputation and competitiveness by adopting sustainable practices, and reducing their own operating costs by implementing energy efficiency measures. In addition, complying with energy saving regulations can avoid penalties and improve relations with regulators and customers.