Solar Panel Simulator

A 3 kWp installation costs between €6,000-9,000 including VAT, a 6 kWp between €10,000-15,000, and a 9 kWp between €15,000-22,000. Prices vary by panel type, inverter, and installer.

The self-consumption premium depends on installed power. Since the Q1 2026 reform, it is paid as a single lump sum on the 1st anniversary for systems ≤ 9 kWp, and spread over 5 years for systems > 9 kWp (80% in year 1, then 5% per year).

Yes, though with longer payback periods. Northern France receives 1000-1100 kWh/kWp/year vs 1400-1450 in the south. The payback period is typically 10-14 years in the north vs 8-11 in the south.

Currently, batteries are rarely profitable due to their high cost (€3,000-8,000). They make sense if you want energy independence or have very high evening consumption. Battery ROI is typically 12-18 years.

In France, solar panels compensate their manufacturing CO2 in about 2-3 years. Over 25 years, they avoid approximately 1-2 tonnes of CO2 per kWp, despite France's already low-carbon electricity mix.

Yes! With a 6-9 kWp installation, you can cover 30-50% of an EV's annual charging needs with solar energy. This saves €500-1,000/year compared to grid charging and significantly more vs fuel costs.

Installations ≤3 kWp connected to the public grid are tax-exempt. Above 3 kWp, revenues are taxed under Micro-BIC (50% allowance) or real regime, plus 17.2% social contributions.