Solar energy installation trends and costs in France

Residential solar energy investments in France are undergoing a shift in economic logic due to regulatory changes implemented in June 2026. The removal of the self-consumption premium and a significant reduction in the surplus electricity buyback rate—now approximately 1.1 cents per kWh—have made direct self-consumption the primary driver for financial returns.

For a standard 9 kWc installation, turnkey costs in 2026 typically range between 15,000 and 22,000 euros, though prices can exceed 25,000 euros when including battery storage. Total costs depend on hardware, labor, Enedis connection fees, and administrative requirements such as Consuel certification.

Technological choices also impact long-term value. For instance, Solarwatt offers glass-glass modules that provide higher durability and resistance to moisture compared to traditional polymer-backed panels, potentially extending service life beyond 30 years. When planning installations, homeowners are advised to size systems to match their base electricity consumption to maximize savings from avoided grid purchases.