United States
Chicago rooftop solar case study
US homeowners combine PVWatts modeling with time-of-use tariffs, tax credits, and strong sun to keep payback compelling coast to coast.
Remboursement / Taille du système
Taille du système
9.2 kW
Rendement annuel
11,800 kWh per year
Remboursement
7.5 years
Coût d’installation moyen
€18,500
Économies annuelles
€2,100 per year
Valeur sur la durée
€38,000
Pourquoi cette ville brille
A Chicago two-flat runs 9.2 kW; PVWatts projects 11.8 MWh, trimming ComEd bills despite snowy winters.
Rooftop solar in Chicago works with a 9.2 kW array that delivers about 11,800 kWh yearly. Install costs near €18,500 translate to roughly €2,100 annual savings and a 7.5-year payback under typical tariffs.
Offsets roughly 5.0 tonnes of CO2 annually.