Payback · Aveiro District · Portugal
Commercial solar payback in Aveiro: 4.3 years
A self-consuming 100 kWp array on a commercial roof in Aveiro typically pays back in about 4.3 years. That figure uses Aveiro's specific yield of 1,500 kWh per kWp per year and a commercial tariff near €0.20/kWh, with 70% of generation used on site.
At that yield the array produces about 150,000 kWh a year and saves roughly €21,000 annually against an installed cost near €90,000. Over 25 years the net saving is around €435,000, while avoiding about 52.5 tonnes of CO₂ each year.
Aveiro is in Aveiro District, alongside Santa Maria da Feira, Águeda and Ovar. 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 Aveiro payback number is calculated
Start with 100 kWp × 1,500 kWh/kWp = 150,000 kWh of annual production on a representative warehouse or factory roof in Aveiro. Apply 70% self-consumption against €0.20 per kWh and you get about €21,000 a year. Divide the €900/kWp installed cost (€90,000 for 100 kWp) by that saving and payback lands at 4.3 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 Aveiro cannot beat roughly 4.3 years on these inputs, it is probably not a priority lead.
Aveiro versus the rest of Portugal
Relative to Portugal as a whole, payback in Aveiro is about 0.0 years faster than the Portugal average of 4.3 years. Portugal enjoys very high sunshine hours along the Atlantic coast and interior. Warehouses, factories and cold-storage sites achieve rapid payback from on-site solar self-consumption.
That is why outreach in Aveiro should open with the local number — 4.3 years and €21,000 a year on 100 kWp — not a national average that under- or over-sells the roof.
What actually changes payback on a Aveiro roof
Yield is already baked into the 1,500 kWh/kWp zone for Aveiro District. 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 €0.20/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 Aveiro sites by savings instead of guessing from a map pin.
Frequently asked questions
What is the commercial solar payback in Aveiro?
About 4.3 years for a self-consuming 100 kWp rooftop in Aveiro. That uses 1,500 kWh/kWp of local yield and a tariff near €0.20/kWh, saving around €21,000 a year.
How much electricity does 100 kWp produce in Aveiro?
Around 150,000 kWh a year. Multiply the 1,500 kWh/kWp specific yield for Aveiro District 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 Aveiro better than nearby towns?
Payback is in the same band as Santa Maria da Feira, Águeda and Ovar because they share the Aveiro District irradiance zone. The practical difference is the stock of large, unshaded commercial roofs — SolarScout lists those in Aveiro with a pre-computed saving so you can compare sites, not just towns.