How much energy do solar panels produce in Quelfes?

A 5 kWp solar panel system in Quelfes, Portugal produces approximately 8,695 kWh per year, based on EU PVGIS data.

How much can you save with solar panels in Quelfes?

A 5 kWp system without battery saves approximately €772 per year (accounting for 18% self-consumption and feed-in tariff for surplus). The payback period is 7.1 years.

What is the optimal panel angle in Quelfes?

The optimal tilt angle for solar panels in Quelfes is 33 degrees facing 1 degrees from south.

Solar Panels in Quelfes

Portugal · 37.06°N, 7.82°W

Solar Potential

Excellent

1,739 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

8,695kWh

Net Annual Savings

€772

Payback Period

7.1 yrs

25-Year Net

€18,309

Savings Breakdown

Self-consumed (18% of 8,695 kWh)1,565 kWh × 0.220 €/kWh

→ Savings from own usage+€344

Injected to grid (82% of production)7,130 kWh × 0.060 €/kWh

→ Feed-in revenue+€428

Net Annual Savings€772

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

593 kWh

610 kWh

743 kWh

769 kWh

839 kWh

822 kWh

881 kWh

864 kWh

783 kWh

678 kWh

567 kWh

546 kWh

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Month	Energy (kWh)	Irradiation (kWh/m²)
January	593	143
February	610	148
March	743	184
April	769	195
May	839	217
June	822	215
July	881	234
August	864	229
September	783	203
October	678	172
November	567	139
December	546	131
Total	8,695	2,210

Environmental Impact

CO2 Saved Per Year

2,026 kg

Equivalent Trees Planted

92 trees

Optimal Panel Angle

33° tilt

Technical Details

Data Source: EU PVGIS v5.3
Coordinates: 37.06003°N, 7.82158°W
System Loss: 14%
Optimal Inclination: 33°
Optimal Azimuth: 1°
Yearly Irradiation: 2210 kWh/m2
Retail Electricity Price: 0.220 EUR/kWh
Feed-in Tariff: 0.060 EUR/kWh
Install Cost: 1,100 EUR/kWp

€1,907

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