France
Paris rooftop solar case study
Case studies from France highlight steady net-metering credits and compact roofs that still close ROI in about eight years.
Zwrot inwestycji / Rozmiar systemu
Rozmiar systemu
7.0 kW
Roczny plon
7,200 kWh per year
Zwrot inwestycji
7.8 years
Śr. koszt instalacji
€11,800
Roczne oszczędności
€1,900 per year
Wartość w cyklu życia
€30,000
Dlaczego to miasto się wyróżnia
A Paris apartment co-op modeled a 7 kW array; 7.2 MWh output feeds heat pumps and cuts utility spend by roughly EUR 1,900 a year.
Rooftop solar in Paris works with a 7.0 kW array that delivers about 7,200 kWh yearly. Install costs near €11,800 translate to roughly €1,900 annual savings and a 7.8-year payback under typical tariffs.
Offsets roughly 2.9 tonnes of CO2 annually.