How much energy do solar panels produce in Guyancourt?

A 5 kWp solar panel system in Guyancourt, France produces approximately 5,764 kWh per year, based on EU PVGIS data.

How much can you save with solar panels in Guyancourt?

A 5 kWp system without battery saves approximately €931 per year (accounting for 25% self-consumption and feed-in tariff for surplus). The payback period is 8.1 years.

What is the optimal panel angle in Guyancourt?

The optimal tilt angle for solar panels in Guyancourt is 38 degrees facing -4 degrees from south.

Solar Panels in Guyancourt

France · 48.77°N, 2.07°E

Solar Potential

Moderate

1,153 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

5,764kWh

Net Annual Savings

€931

Payback Period

8.1 yrs

25-Year Net

€20,948

Savings Breakdown

Self-consumed (25% of 5,764 kWh)1,441 kWh × 0.256 €/kWh

→ Savings from own usage+€369

Injected to grid (75% of production)4,323 kWh × 0.130 €/kWh

→ Feed-in revenue+€562

Net Annual Savings€931

Installation cost (5 kWp × 1,500 €/kWp)€7,500

France Solar Policy

Obligation d'Achat: surplus buyback at €0.13/kWh for ≤9kWp. Full sale option at €0.23/kWh. 5.5% VAT for ≤9kWp systems.

Source: CRE tariff schedule Q1 2026, 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

219 kWh

313 kWh

505 kWh

640 kWh

657 kWh

662 kWh

679 kWh

632 kWh

567 kWh

410 kWh

263 kWh

217 kWh

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Month	Energy (kWh)	Irradiation (kWh/m²)
January	219	51
February	313	74
March	505	122
April	640	159
May	657	165
June	662	170
July	679	177
August	632	163
September	567	144
October	410	100
November	263	62
December	217	51
Total	5,764	1,438

Environmental Impact

CO2 Saved Per Year

1,343 kg

Equivalent Trees Planted

61 trees

Optimal Panel Angle

38° tilt

Technical Details

Data Source: EU PVGIS v5.3
Coordinates: 48.77334°N, 2.07393°E
System Loss: 14%
Optimal Inclination: 38°
Optimal Azimuth: -4°
Yearly Irradiation: 1438 kWh/m2
Retail Electricity Price: 0.256 EUR/kWh
Feed-in Tariff: 0.130 EUR/kWh
Install Cost: 1,500 EUR/kWp

€1,459

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