Every year, your roof receives between 1,000 and 1,700 kWh/m² of solar energy
1,200 kWh/m²/year
Average in France
Photovoltaic cells convert light into electricity
20-26%
Efficiency by technology
Direct current becomes alternating current for use
97-98%
Inverter efficiency
Self-consumption: directly use the electricity produced
30-70%
without battery
Excess is injected and bought back by EDF OA
0.04 €/kWh
Surplus buyback rate Q1 2026 (≤9 kWp)
Savings of 30 to 60% on your electricity bill
600-1,200 €/year
for a 6 kWc installation
Profitability achieved in 8-14 years depending on your zone
6-12%
IRR over 25 years
Each kWh of solar avoids 55 g of CO₂ (FR mix) to 400+ g (EU mix)
1 metric ton CO₂
avoided per year for 6 kWc
25-30 year performance warranty, minimal maintenance
0.3-0.5%/year
Degradation
94-96% recyclable at end of life