How much energy do solar panels produce in Porto?

A 5 kWp solar panel system in Porto, Portugal produces approximately 7,551 kWh per year, based on EU PVGIS data.

How much can you save with solar panels in Porto?

A 5 kWp system without battery saves approximately €670 per year (accounting for 18% self-consumption and feed-in tariff for surplus). The payback period is 8.2 years.

What is the optimal panel angle in Porto?

The optimal tilt angle for solar panels in Porto is 36 degrees facing 5 degrees from south.

Solar Panels in Porto

Portugal · 41.15°N, 8.61°W

Solar Potential

Very Good

1,510 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

7,551kWh

Net Annual Savings

€670

Payback Period

8.2 yrs

25-Year Net

€15,176

Savings Breakdown

Self-consumed (18% of 7,551 kWh)1,359 kWh × 0.220 €/kWh

→ Savings from own usage+€299

Injected to grid (82% of production)6,191 kWh × 0.060 €/kWh

→ Feed-in revenue+€371

Net Annual Savings€670

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

455 kWh

520 kWh

629 kWh

688 kWh

763 kWh

743 kWh

809 kWh

795 kWh

712 kWh

568 kWh

441 kWh

426 kWh

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Month	Energy (kWh)	Irradiation (kWh/m²)
January	455	109
February	520	127
March	629	156
April	688	175
May	763	197
June	743	193
July	809	212
August	795	210
September	712	185
October	568	144
November	441	108
December	426	102
Total	7,551	1,916

Environmental Impact

CO2 Saved Per Year

1,759 kg

Equivalent Trees Planted

80 trees

Optimal Panel Angle

36° tilt

Technical Details

Data Source: EU PVGIS v5.3
Coordinates: 41.15°N, 8.61°W
System Loss: 14%
Optimal Inclination: 36°
Optimal Azimuth: 5°
Yearly Irradiation: 1916 kWh/m2
Retail Electricity Price: 0.220 EUR/kWh
Feed-in Tariff: 0.060 EUR/kWh
Install Cost: 1,100 EUR/kWp

Nearby Cities

Lisbon

Portugal

Very Good

Output

7.9 MWh

Savings

€1,738

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