Solar energy allows consumers of different types to produce their own electricity, covering part of their electrical needs at a cost lower than what electricity is usually bought from marketers, thereby avoiding the CO₂ emissions associated with traditional electricity generation.
Solar self-consumption is the ability of one or more consumers to generate, manage and consume energy on the same site or remotely, either with energy storage or without. Every kWh produced and self-consumed is 1 kWh less that we must buy from the electricity company, with the corresponding saving on the electricity bill.
Solar energy allows us to:
These are the prerequisites for installing solar panels in Tarragona:
Once the installation is complete, the following will be required:
If you want to install solar panels in Tarragona, it is highly recommended to hire a comprehensive service from a specialised solar energy company including engineering, prior processing, materials supply, installation, legalisation and management of tax incentives and/or grants.
If you want to install solar panels in your residential community in Tarragona, you will need:
Discover more about our shared self-consumption solutions for residential communities.
Currently there are different lines of incentives to help finance a solar panel installation in Tarragona:
New (RDL 7/2026): Expansion of shared self-consumption to a 5 km radius (previously 2 km). Ideal for energy communities in industrial estates, neighbourhoods or towns in the province of Tarragona.
The price of a solar panel installation depends mainly on 3 factors:
Despite these variables, the vast majority of solar installations performed by SolarTradex have a return on investment period of less than 5 years, and with grants included it can be reduced to less than 3 years.
In Tarragona we have completed reference projects such as the 671 kWp installation for Pastisart in Roda de Barà, one of our largest industrial projects, avoiding 225 tonnes of CO₂ emissions per year.
Our office in Torredembarra (Tarragona) allows us to offer a proximity service to the entire province: Tarragona city, Reus, Cambrils, Salou, El Vendrell, Tortosa, Valls, Roda de Barà and the regions of Camp de Tarragona, Baix Camp, Baix Penedès, Tarragonès and Terres de l'Ebre.
Opening hours:
Monday to Thursday: 9:00 - 18:00
Friday: 9:00 - 14:00
Request a quote with no commitment and one of our technicians will analyse your case in detail.

SolarTradex
Carrer de l'Envelat, 9 -11,
43830 Torredembarra,
Tarragona
Phone 931 696 597 and 692 85 93 77
email: hola@solartradex.com

OPENING TIMES:
Local Holidays:
September 11: Catalonia Day
July 15: festival of the Torredembarra painting
September 4: feast of Sta. Rosalia Torredembarra
Opening Hours:
Monday to Thursday: 9:00 - 18:00
Friday: 9:00 - 14:00
At SolarTradex we handle all administrative management: you only need to sign. These are the procedures and approximate costs by territory.
Procedures in Catalonia
Procedures in the Balearic Islands
Energy Performance Certificate (CEE) for income tax deduction
If you want to apply the income tax deduction, you need a double CEE certification (one prior, no more than 2 years old, and another after the works).
Do we handle it? Yes. The entire administrative process (permits, registrations, applications for reductions) is managed by our team. You receive your installation up and running and fully legalised.
The timeframes depend on the type of grant, and with the new framework of the Royal Decree-Law 7/2026, the system has been simplified. The IRPF (income tax) deduction is applied in the following year's tax return (immediate effect when filing). The CAE system is the fastest incentive, as it is applied as an immediate discount on the quotation, before the works begin.
The FACTOR 2026 call in the Balearic Islands is resolved on a strict first-come, first-served basis; after the grant is awarded and the installation justified, the Government makes the payment. The municipal IBI discount depends on each town council and is usually applied from the fiscal year following the application.
Regarding the NextGeneration subsidies awarded in 2021-2022, there are still files pending resolution or payment due to administrative overload. If you have a pending NextGeneration file, we recommend consulting our specialised content on our blog for guidance on how to complete the justification and collect the subsidy.
If you are considering an energy transition in your home during 2026, it is essential to know the IRPF (income tax) deductions introduced by the Royal Decree-Law 7/2026. These incentives are designed to reward those who drastically reduce their dependence on fossil fuels.
Yes, you can deduct part of the investment in your solar installation. The amount depends on two key factors:
To access the maximum deductions, the most common route is to combine photovoltaic installation with aerothermal: replacing the gas boiler guarantees exceeding the 30% threshold and activating the higher deduction bracket. In addition, if you add a charger for an electric vehicle, you add a 15% independent deduction.
If the property has two owners, the deduction can be applied twice by splitting the cost of the works in two. That is, each owner can deduct up to the maximum allowed based on the type of home and action, doubling the total tax savings.
Yes, they are perfectly compatible and can be combined in the same project. In fact, taking advantage of both incentives together is the most profitable strategy under the new framework of the Royal Decree-Law 7/2026.
When a deep energy renovation is carried out — for example combining the installation of solar panels with the replacement of a gas boiler with an aerothermal system — the client can access both benefits at the same time:
Check the details on our grants and subsidies for solar panels page.
Installing only solar panels usually stays within the 20% bracket. To reach the 30% consumption reduction required for the top brackets, the best routes are:
The fundamental technical requirement to apply these income tax deductions is having the official technical justification corresponding to each type of action, in addition to the fact that the property cannot be used for any economic activity.
This justification is provided through official certificates and by meeting minimum improvement thresholds:
1. Energy Efficiency Certificates (CEE): They are essential to justify deductions linked to the efficiency and reduction of the property's or building's consumption:
2. Electrical Installation Certificates (CIE): Required for electricity generation installations:
3. Physical infrastructure:
The 30% reduction refers specifically to the decrease in non-renewable primary energy consumption of the property or building.
Although the regulations do not specify the exact mathematical formula, the calculation and official certification must be carried out through the Energy Efficiency Certificates (CEE). This technical certificate compares the previous and subsequent state of the property to justify access to the 40% deduction (individual homes) or 60% (entire buildings).
Note: The deduction also applies if the CEE proves that, after the works, an energy rating with an A or B label has been reached.
Technical analyses indicate that an integrated intervention, such as combining photovoltaic panels with the replacement of a gas boiler with an aerothermal system, virtually guarantees exceeding this 30% threshold.
Yes. RDL 7/2026 legally enables municipal councils to apply reductions of up to 50% on the IBI (property tax) and rebates of up to 95% on the ICIO (construction tax) for projects that integrate renewables.
Both benefits are presented as complementary incentives alongside the state income tax deductions. There is no legal restriction preventing the simultaneous enjoyment of local and state tax advantages.
Important note on incompatibilities: The only express restriction occurs internally between the income tax deductions themselves: the 20% deduction for installing renewable self-consumption cannot be combined with the building rehabilitation deductions.