United States
Minneapolis 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.
Payback / System Size
System Size
8.0 kW
Annual Yield
10,500 kWh per year
Payback
7.0 years
Avg install cost
€16,800
Annual savings
€1,850 per year
Lifetime value
€34,500
Why this city shines
Twin Cities ramblers run 8 kW arrays; 10.5 MWh per year plus net-metering keep ROI strong even with snowy seasons.
Rooftop solar in Minneapolis works with a 8.0 kW array that delivers about 10,500 kWh yearly. Install costs near €16,800 translate to roughly €1,850 annual savings and a 7.0-year payback under typical tariffs.
Offsets roughly 4.4 tonnes of CO2 annually.