Payback · Asturias · Spain
Commercial solar payback in Gijón: 4.1 years
A self-consuming 100 kWp array on a commercial roof in Gijón typically pays back in about 4.1 years. That figure uses Gijón's specific yield of 1,442 kWh per kWp per year and a commercial tariff near €0.22/kWh, with 70% of generation used on site.
At that yield the array produces about 144,200 kWh a year and saves roughly €22,207 annually against an installed cost near €90,000. Over 25 years the net saving is around €465,175, while avoiding about 50.5 tonnes of CO₂ each year.
Gijón is in Asturias, alongside Oviedo, Avilés and Langreo. Those towns share the same irradiance zone, so payback is similar — the difference is which warehouses and factories still have empty roof. SolarScout lists them with a pre-computed business case rather than a generic "solar is cheap" pitch.
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Scan this area free →How the Gijón payback number is calculated
Start with 100 kWp × 1,442 kWh/kWp = 144,200 kWh of annual production on a representative warehouse or factory roof in Gijón. Apply 70% self-consumption against €0.22 per kWh and you get about €22,207 a year. Divide the €900/kWp installed cost (€90,000 for 100 kWp) by that saving and payback lands at 4.1 years.
This is a worked example, not a quote. Real payback moves with self-consumption, shading, export tariff and installed cost. It is still the right first filter: if a roof in Gijón cannot beat roughly 4.1 years on these inputs, it is probably not a priority lead.
Gijón versus the rest of Spain
Relative to Spain as a whole, payback in Gijón is a little slower than the Spain average of 3.8 years, because Asturias sits on the cooler side of the national irradiance band. Spain has Europe’s strongest solar resource. High specific yields on industrial estates and logistics parks make commercial rooftop solar one of the best-returning energy investments on the continent.
That is why outreach in Gijón should open with the local number — 4.1 years and €22,207 a year on 100 kWp — not a national average that under- or over-sells the roof.
What actually changes payback on a Gijón roof
Yield is already baked into the 1,442 kWh/kWp zone for Asturias. The bigger swings are usable roof area, daytime load (factories and cold stores self-consume more than empty warehouses) and whether the site pays the full €0.22/kWh commercial rate.
SolarScout estimates roof footprint from satellite and map data and, where Google Solar coverage exists, modelled annual output — so you can rank Gijón sites by savings instead of guessing from a map pin.
Frequently asked questions
What is the commercial solar payback in Gijón?
About 4.1 years for a self-consuming 100 kWp rooftop in Gijón. That uses 1,442 kWh/kWp of local yield and a tariff near €0.22/kWh, saving around €22,207 a year.
How much electricity does 100 kWp produce in Gijón?
Around 144,200 kWh a year. Multiply the 1,442 kWh/kWp specific yield for Asturias by 100 kWp; shading and orientation can move that figure, which is why SolarScout models each roof rather than stopping at the city average.
Is payback in Gijón better than nearby towns?
Payback is in the same band as Oviedo, Avilés and Langreo because they share the Asturias irradiance zone. The practical difference is the stock of large, unshaded commercial roofs — SolarScout lists those in Gijón with a pre-computed saving so you can compare sites, not just towns.