Solar panels in Viana do Castelo
Real PVGIS irradiance data for Viana do Castelo: 1,490 kWh/kWp/year, 27% lower than the Algarve, plus typical local costs and payback.
Viana do Castelo sits in the Alto Minho subregion of Northern Portugal. An Atlantic port town famous for the Santa Luzia hilltop basilica and the Romaria d'Agonia festival.
Coastal, at the mouth of the Lima river. More marine cloud cover than inland towns, but cooler sea-influenced temperatures keep panels running efficiently, and the highest yield of the five towns here.
South-facing roofs near the coast see strong output. Watch for salt-air corrosion on mounting hardware close to the seafront and confirm marine-grade fixings with your installer.
Local irradiance data
1,490kWh/kWp/year
PVGIS estimate for Viana do Castelo
-27%vs Algarve
Algarve benchmark: 2,050 kWh/kWp/year
Illustrative example
For a 6 kWp system in Viana do Castelo, assuming a typical mix of daytime and evening electricity use:
6,600–8,100€
Typical installed cost range
€1,082
Estimated annual saving
6.8 yrs
Estimated payback period
This is a general illustration, not a quote. Your actual system size, cost and payback depend on your roof, consumption and postcode — the Blueprint gives you the exact numbers for your property.
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