Grants and Subsidies for Aerothermal Energy in Catalonia
Last update: April, 2026
Content revised according to current regulations on self-consumption for companies and subsidies in Catalonia.
The panorama of subsidies aerotermia Catalonia has changed quite a lot in recent months. If a few years ago most of the savings came from tax deductions, in 2026 the situation is different.
As of today, grants still exist, but the focus is on:
- Direct subsidies from ICAEN
- Municipal bonuses
- and the speed with which they can be requested
How much is the aerothermal energy tax deductible?
The state deductions of 20%, 40% and 60% have ended. Those percentages that you have probably seen on other websites corresponded to a temporary deduction approved during the Recovery Plan years (Next Generation funds) that has not been renewed for fiscal year 2026.
What’s left in 2026?
In Catalonia you can apply the autonomous deduction for investment in the primary residence if the installation of aerotermia is part of a reform that improves the energy efficiency of the property. The percentage and limits depend on your specific tax situation.
What is still mandatory for any deduction – state or regional – is to have the energy certificate before and after installation, proving the improvement achieved.
What is certain in 2026: IBI rebates (up to 50% for 5 years in many municipalities) and direct ICAEN subsidies are more predictable and do not depend on your personal income tax bracket. For many families, they represent a greater saving than any tax deduction.
What autonomic aids for aerotermia in Catalonia this 2026?
The Catalan Energy Institute continues to offer grants for aerothermal installations in Catalonia.
These are the keys:
- Amount: Up to 40% of the cost of the installation (max. €3,000 per dwelling).
- Deadlines: Many current calls must be executed and justified before 2026.
Important: Grants are awarded on a first-come, first-served basis until funds are exhausted.
⚠️ Not all aerothermal installations are eligible for subsidies.
For an installation to be eligible for subsidies, it must meet minimum energy efficiency requirements. One of the most important is the seasonal performance (SCOP), which must exceed the values required by European standards (normally SCOP > 2.5).
At Fotovol we only work with equipment that meets the requirements of the ICAEN, ensuring that the installation is eligible and avoiding problems in the processing.
What additional aid can be requested in Barcelona for aerotermia?
In Barcelona city there are additional energy rehabilitation programs managed by the Consorci de l’Habitatge de Barcelona.
These aids can reach:
- Up to 6,000 € per dwelling
- Higher subsidies for actions in complete buildings
- Compatibility with other aid
Typical time frame: Many active calls until June 2026.
Municipal subsidies (ICIO and IBI) for the installation of aerothermics
Many municipalities in Catalonia, including Girona and Barcelona, offer tax incentives for installing aerothermal energy:
- ICIO: Up to 95% discount on the Tax on Constructions, Installations and Works.
- IBI: 30-50% discounts for 3-5 years.
These bonuses are:
- More stable
- More predictable
- and compatible with other subsidies
Plan Renove de calderas de Cataluña 2026: does it cover aerotermia?
If you have a gas, diesel or propane boiler and you replace it with aerothermal energy, you can take advantage of the Plan Renove de calderas de la Generalitat de Catalunya, managed through the ICAEN.
What does the Renove Plan cover?
| Type of action | Approximate assistance |
|---|---|
| Replacement of boiler with aerothermics | Up to 3.000 €. |
| Housing in low air quality zone | Additional increment |
| Combination with other thermal upgrades | Compatible |
Key points to consider:
- The request must be made before executing the installation.
- The work must generally be completed by June 30, 2026.
- It is compatible with ICAEN subsidies for renewable energies, allowing both subsidies to be accumulated.
- The installed equipment must meet the minimum efficiency requirements (SCOP > 2.5).
Certificates of Energy Saving (CAE): Extra money for your fan heater
In addition to subsidies, there is a new way of monetization: Energy Saving Certificates (ESC).
This system provides additional income from the reduction of energy consumption after installation.
How much can you really save?
Although the IRPF deduction no longer exists, aerothermal energy is still one of the most efficient options.
- Reduces energy consumption by up to 70-75
- Eliminates the use of gas or diesel oil
- Can be combined with solar panels
In the long run, the bill savings offset the initial investment, even without government tax incentives.
Eligibility requirements
In order to apply for subsidies for aerotermia in Catalonia, you will normally need:
- Ownership or community of owners
- Improving the energy efficiency of housing
- Contracting an authorized installation company
- Submit documentation on time
The energy certificate is mandatory
The energy certificate:
- Demonstrates improvement
- Allows to calculate the aid
and is essential to approve the application.
Without it, there is no grant.
How to apply for aid for aerothermal energy in Catalonia
The process usually goes like this:
- Identify available assistance
- Prepare documentation
- Request a quote
- Submit the application
- Execute the installation
- Justify within the deadline
We take care of all the management of the subsidy
We know that one of the biggest obstacles is bureaucracy. That’s why at Fotovol we manage the entire process for you:
- Preliminary study and initial energy certificate
- Installation by authorized technicians
- Complete processing of the aid before the ICAEN
- Final certificate and justification of the subsidy
We make sure that you meet all the requirements and that you do not lose your aid.
Request your free study and find out how much you can save with aerothermal energy in Catalonia before the funds run out.
Frequently asked questions about grants and subsidies for installing aerothermal energy in your home
What are the subsidies for aerothermal energy in Catalonia in 2026?
Currently, the main aids are direct subsidies from the ICAEN (up to €3,000 per home), income tax deductions for energy efficiency (up to 60%) and municipal IBI and ICIO bonuses. At Fotovol we comprehensively manage these three ways to maximize your savings, taking advantage of both existing regional funds and local rehabilitation programs in Barcelona and Girona.
How much tax deduction is currently available for the aerothermics in the income tax return?
In 2026, you can deduct between 20% and 60% of the cost of the installation in the IRPF. The maximum deduction is €15,000 in residential buildings and up to €7,500 in single-family homes. To access these tax benefits, it is mandatory to have an energy certificate showing a minimum reduction of 30% in the consumption of non-renewable energy or an improvement in the energy rating to class A or B.
When is it worthwhile to install aerothermal energy at home?
Installing aerothermal energy pays off when you are looking to reduce your energy bill by 70% to 75% per year. With the subsidies in force in 2026 and the monthly savings generated, the payback period is between 5 and 7 years. The profitability is maximum if combined with photovoltaic solar panels, since the cost of air conditioning becomes practically zero during the hours of solar production.
Can I apply if I have already started the installation?
No, generally aid must be applied for before starting the works. In most of the ICAEN calls and municipal grants, it is an indispensable requirement to present an accepted budget and the previous energy certificate before the execution. In Fotovol we carry out this initial procedure in 48 hours to ensure that you enter the call and do not lose the right to the subsidy for lack of foresight.
Is it possible to combine ICAEN subsidies with IBI rebates?
Yes, they are 100% compatible and cumulative. Local experts such as Fotovol manage all the procedures so that you can receive direct aid from the Generalitat and, simultaneously, apply to your local council for a rebate of up to 50% of the IBI for 3 to 5 years. This strategic combination guarantees the highest possible return on your investment in aerothermal energy this year.