How much energy do solar panels produce in Alfena?

A 5 kWp solar panel system in Alfena, Portugal produces approximately 7,207 kWh per year, based on EU PVGIS data.

How much can you save with solar panels in Alfena?

A 5 kWp system without battery saves approximately €663 per year (accounting for 20% self-consumption and feed-in tariff for surplus). The payback period is 8.3 years.

What is the optimal panel angle in Alfena?

The optimal tilt angle for solar panels in Alfena is 35 degrees facing 9 degrees from south.

Solar Panels in Alfena

Portugal · 41.24°N, 8.52°W

Solar Potential

Very Good

1,441 kWh per kWp installed capacity

Your Solar Savings Estimate

Configure system size and battery to see realistic savings

Data last updated: March 2026

System Size

Battery Storage

Annual Output

7,207kWh

Net Annual Savings

€663

Payback Period

8.3 yrs

25-Year Net

€15,071

Savings Breakdown

Self-consumed (20% of 7,207 kWh)1,441 kWh × 0.220 €/kWh

→ Savings from own usage+€317

Injected to grid (80% of production)5,765 kWh × 0.060 €/kWh

→ Feed-in revenue+€346

Net Annual Savings€663

Installation cost (5 kWp × 1,100 €/kWp)€5,500

Portugal Solar Policy

UPAC system: surplus at 90% of MIBEL market price (~€0.04-0.08/kWh). 23% VAT (6% temporary rate expired July 2025).

Source: ERSE, Eurostat H1 2025

The savings estimates shown are for informational purposes only and do not constitute financial advice. Actual savings depend on your specific installation, roof condition, shading, consumption patterns, and future electricity price changes. Feed-in tariffs and regulations change frequently. Always obtain quotes from certified installers and consult a financial advisor before making investment decisions.

Monthly Energy Production

417 kWh

488 kWh

596 kWh

649 kWh

736 kWh

719 kWh

798 kWh

786 kWh

688 kWh

539 kWh

409 kWh

381 kWh

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Month	Energy (kWh)	Irradiation (kWh/m²)
January	417	100
February	488	119
March	596	147
April	649	165
May	736	190
June	719	188
July	798	210
August	786	208
September	688	179
October	539	136
November	409	100
December	381	92
Total	7,207	1,835

Environmental Impact

CO2 Saved Per Year

1,679 kg

Equivalent Trees Planted

76 trees

Optimal Panel Angle

35° tilt

Technical Details

Data Source: EU PVGIS v5.3
Coordinates: 41.23671°N, 8.52454°W
System Loss: 14%
Optimal Inclination: 35°
Optimal Azimuth: 9°
Yearly Irradiation: 1835 kWh/m2
Retail Electricity Price: 0.220 EUR/kWh
Feed-in Tariff: 0.060 EUR/kWh
Install Cost: 1,100 EUR/kWp

€1,657

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