United States
Seattle 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.
Rückzahlung / Systemgröße
Systemgröße
8.0 kW
Jahresertrag
10,000 kWh per year
Rückzahlung
7.4 years
Ø Installationskosten
€16,200
Jährliche Einsparung
€1,750 per year
Lebenszeitertrag
€34,000
Warum diese Stadt glänzt
A Ballard craftsman fits 8 kW between dormers; cool temperatures keep efficiency high for 10 MWh per year.
Rooftop solar in Seattle works with a 8.0 kW array that delivers about 10,000 kWh yearly. Install costs near €16,200 translate to roughly €1,750 annual savings and a 7.4-year payback under typical tariffs.
Offsets roughly 4.2 tonnes of CO2 annually.