Payback · Aragon · Spain
Commercial solar payback in Calatayud: 3.7 years
A self-consuming 100 kWp array on a commercial roof in Calatayud typically pays back in about 3.7 years. That figure uses Calatayud's specific yield of 1,597 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 159,700 kWh a year and saves roughly €24,594 annually against an installed cost near €90,000. Over 25 years the net saving is around €524,850, while avoiding about 55.9 tonnes of CO₂ each year.
Calatayud is in Aragon, alongside Zaragoza, Huesca and Teruel. 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 Calatayud payback number is calculated
Start with 100 kWp × 1,597 kWh/kWp = 159,700 kWh of annual production on a representative warehouse or factory roof in Calatayud. Apply 70% self-consumption against €0.22 per kWh and you get about €24,594 a year. Divide the €900/kWp installed cost (€90,000 for 100 kWp) by that saving and payback lands at 3.7 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 Calatayud cannot beat roughly 3.7 years on these inputs, it is probably not a priority lead.
Calatayud versus the rest of Spain
Relative to Spain as a whole, payback in Calatayud is about 0.1 years faster than the Spain average of 3.8 years. 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 Calatayud should open with the local number — 3.7 years and €24,594 a year on 100 kWp — not a national average that under- or over-sells the roof.
What actually changes payback on a Calatayud roof
Yield is already baked into the 1,597 kWh/kWp zone for Aragon. 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 Calatayud sites by savings instead of guessing from a map pin.
Frequently asked questions
What is the commercial solar payback in Calatayud?
About 3.7 years for a self-consuming 100 kWp rooftop in Calatayud. That uses 1,597 kWh/kWp of local yield and a tariff near €0.22/kWh, saving around €24,594 a year.
How much electricity does 100 kWp produce in Calatayud?
Around 159,700 kWh a year. Multiply the 1,597 kWh/kWp specific yield for Aragon 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 Calatayud better than nearby towns?
Payback is in the same band as Zaragoza, Huesca and Teruel because they share the Aragon irradiance zone. The practical difference is the stock of large, unshaded commercial roofs — SolarScout lists those in Calatayud with a pre-computed saving so you can compare sites, not just towns.