Solar savings calculator for Girona
Find out in 30 seconds how many solar panels you need, how much you'd save on your bill and how many years the installation would take to pay off. Based on real solar-production data for the Girona area.
Your details
Your estimate
- Recommended size
- 3 kWp
- Panels (~500 W)
- 6
- Annual production
- 4,200–4,700 kWh
- Estimated payback
- 3.5–6.2 years
- CO₂ avoided per year
- 🌱 ~710 kg
Estimated installation cost
- Solar panels + inverter (installed)
- 3,900–5,100 €
- Total cost before grants
- 3,900–5,100 €
- Final cost with ICAEN grant (−40%)
- 2,300–3,100 €
* Indicative estimate using conservative ranges. The exact quote is free and no-obligation.
How we calculate the estimate
No tricks and no inflated numbers: the calculator uses conservative, public assumptions — the same ones we apply when sizing a real installation.
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Solar production in Girona: between 1,400 and 1,550 kWh per year per installed kWp on a well-oriented roof, adjusted for the orientation you choose (south, east-west or other).
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Energy prices: around €0.20/kWh for the electricity you buy, and around €0.08/kWh for the compensation of surplus fed into the grid.
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Self-consumption: without a battery you use 35–50% of production directly; with a battery, 65–85%.
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Sizing: we propose a power so annual production roughly covers your consumption, without oversizing, using ~500 W panels.
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Cost and subsidy: a turnkey cost range per kWp and, where relevant, for the battery, applying the up-to-40% ICAEN grant we've secured for our clients.
Why it's an estimate (and not a quote)
Every roof, consumption pattern and home is different: shading, pitch, the state of your electrical panel or your tariff can all move the numbers. That's why the calculator works with ranges rather than exact figures. The real quote — with a visit, roof survey and concrete proposal — is free and no-obligation.
Want to learn more before requesting a quote?
Frequently asked questions
How many solar panels do I need for my house?
It depends on your annual consumption and your roof. As a guide, the calculator converts your bill into consumption and proposes a power that roughly covers it: for an average home that's usually 6–12 panels. We confirm the exact number in the free technical visit.
How much do you save with solar panels in Girona?
It depends on your consumption, orientation and whether you have a battery. The calculator estimates it with your numbers: it combines the energy you'll stop buying with the surplus compensation. The more consumption you shift to sunny hours (or store in a battery), the bigger the saving.
How many years until a solar installation pays off?
With the ICAEN subsidy and the bill savings, most well-sized home installations pay for themselves within a few years; after that, the energy you produce is practically free for decades. The calculator estimates it for your specific case.
How does the ICAEN subsidy affect the cost?
ICAEN grants can cut the final cost very noticeably: for our clients we've secured up to a 40% grant on the total cost. We handle the entire application, including legalisation and the ICIO tax.
Is the calculator's result exact?
No, and it doesn't claim to be: it's an honest range-based estimate built on conservative assumptions explained on this very page. An exact number requires seeing your real roof and consumption — that's why the quote is free.
Like the numbers?
Turn the estimate into a real quote: free visit and survey, no obligation, subsidy paperwork included.
Let's talk!
Request your free quote. We'll reply in under 24 hours.