How much energy do solar panels produce in Rennes?

A 5 kWp solar panel system in Rennes, France produces approximately 5,775 kWh per year, based on EU PVGIS data.

How much can you save with solar panels in Rennes?

A 5 kWp system without battery saves approximately €933 per year (accounting for 25% self-consumption and feed-in tariff for surplus). The payback period is 8.0 years.

What is the optimal panel angle in Rennes?

The optimal tilt angle for solar panels in Rennes is 38 degrees facing -3 degrees from south.

Solar Panels in Rennes

France · 48.11°N, 1.67°W

Solar Potential

Moderate

1,155 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

5,775kWh

Net Annual Savings

€933

Payback Period

8.0 yrs

25-Year Net

€20,999

Savings Breakdown

Self-consumed (25% of 5,775 kWh)1,444 kWh × 0.256 €/kWh

→ Savings from own usage+€370

Injected to grid (75% of production)4,331 kWh × 0.130 €/kWh

→ Feed-in revenue+€563

Net Annual Savings€933

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

243 kWh

350 kWh

507 kWh

622 kWh

648 kWh

633 kWh

653 kWh

616 kWh

559 kWh

403 kWh

299 kWh

242 kWh

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Month	Energy (kWh)	Irradiation (kWh/m²)
January	243	57
February	350	83
March	507	122
April	622	155
May	648	163
June	633	163
July	653	170
August	616	159
September	559	142
October	403	99
November	299	71
December	242	57
Total	5,775	1,442

Environmental Impact

CO2 Saved Per Year

1,346 kg

Equivalent Trees Planted

61 trees

Optimal Panel Angle

38° tilt

Technical Details

Data Source: EU PVGIS v5.3
Coordinates: 48.11109°N, 1.67431°W
System Loss: 14%
Optimal Inclination: 38°
Optimal Azimuth: -3°
Yearly Irradiation: 1442 kWh/m2
Retail Electricity Price: 0.256 EUR/kWh
Feed-in Tariff: 0.130 EUR/kWh
Install Cost: 1,500 EUR/kWp

€1,496

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