Frequently Asked Questions about solar panels in Galicia
The 15 most common doubts we receive from A Coruña and surrounding areas, answered straightforwardly. If your question isn't here, write to us on WhatsApp.
Price and Savings
How much does it cost to install solar panels on a house in Galicia in 2026?
For a detached house, between €4,000 and €7,000 without a battery and between €7,000 and €9,500 with a battery, depending on the power (usually 3-7 kWp) and materials. The real quote depends on your consumption and your roof. More details in how much solar panels cost in Galicia.
How much do you save per year with solar panels?
A ~5 kWp installation in a home with average consumption (3,500-4,500 kWh per year) saves approximately between €650 and €1,100 per year on the bill, factoring in surplus compensation.
How long does it take for a solar installation to pay for itself?
In most Galician homes, between 6 and 10 years. With subsidies, even sooner. From then on, energy is practically free for the rest of the panels' useful life, which exceeds 25 years.
Are solar panels worth it in Galicia's climate?
Yes. Panels produce with light, not just direct sun, and the cold even improves their performance. What decides the profitability is your consumption and your roof, not just the hours of sunshine. We explain it with data in are solar panels worth it with the Galician climate?.
Grants and Subsidies
What subsidies are available for solar panels in Galicia in 2026?
Three main routes: INEGA subsidies (up to €4,000 in the residential call), the income tax (IRPF) deduction (20-40%), and IBI and ICIO bonuses from many municipalities. INEGA and IRPF can be combined. Full guide: 2026 subsidies in A Coruña and Galicia.
Who handles the subsidies and paperwork?
At Solariña we handle everything: subsidy applications, installation legalization, and self-consumption registration in Galicia. You just decide; we manage the bureaucracy.
What is surplus compensation?
The energy your panels produce and you don't consume is fed into the grid, and your utility company discounts it from your bill. It's what makes self-consumption profitable even if you aren't home all the time.
Can I use the surplus from my solar panels to save on the bill of another house?
Yes, thanks to a Virtual Battery. Many utility companies allow you to accumulate the value in euros of the surplus generated in your installation (for example, in a country house) and use it to lower the bill of a different home (such as an apartment in the city center), provided both contracts are in your name and with the same company.
Can I install batteries and apply for subsidies if I already had solar panels?
Yes. You can add batteries to your existing solar installation and apply for subsidies such as the income tax (IRPF) deduction or specific INEGA grants for storage. The only requirement is that your original installation must be properly legalized and registered.
Your Roof and Your Installation
How many solar panels do I need?
It depends on your consumption and your roof (orientation, tilt, and surface area). Typically for a detached house it's 3-7 kWp. With the free satellite study you know in seconds how many panels fit on your roof.
How does Solariña's satellite solar study work?
You enter your address and, using satellite imagery and Google Solar data, we analyze your roof: panels that fit, estimated production, and approximate annual savings. Instantly, without a prior visit and with no obligation.
How long does the panel installation take?
The physical work on a detached house is normally done in one day. The complete process — study, quote, installation, and legalization — is usually resolved in a few weeks, depending on paperwork and availability.
Do I need a battery?
It's not mandatory. A battery increases the budget by 30% to 50% and pays off mainly if you consume a lot of electricity at night or seek more independence. With surplus compensation, many homes break even well without a battery.
What maintenance do solar panels require?
Very little: periodic system checks and occasional panel cleaning (in Galicia, the rain helps). The inverter is the component that requires the most attention. We offer maintenance and monitoring plans so you don't have to worry.
What permits and procedures are needed in Galicia?
A self-consumption installation requires legalization (certificate and registration in the Galician self-consumption registry) and, depending on the municipality, prior communication or a license. Solariña manages all procedures as part of the service.
Service Area and Special Cases
In which areas does Solariña work?
In A Coruña and surrounding areas: Oleiros, Culleredo, Cambre, Arteixo, Sada, Bergondo, and Carral, and generally throughout the province of A Coruña. Doubts about your area? Write to us and we'll confirm instantly.
What if my roof is not suitable for solar panels?
The free satellite study tells you before you spend a single euro. If one part of the roof doesn't work, there are often alternatives: another roof pitch, fewer panels with better orientation, or a different layout. And if it doesn't pay off, we tell you with the same clarity.
Is your doubt about YOUR house? That is answered with data
Enter your address and, with satellite images of your roof, we'll tell you how many panels fit and how much you would save. In seconds and without obligation.
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