United States
Austin 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
8.8 kW
Annual Yield
14,000 kWh per year
Payback
6.9 years
Avg install cost
€17,000
Annual savings
€2,450 per year
Lifetime value
€47,000
Why this city shines
East Austin ranch homes fit 8.8 kW arrays making 14 MWh; buyback credits plus tax incentives keep payback under seven years.
Rooftop solar in Austin works with a 8.8 kW array that delivers about 14,000 kWh yearly. Install costs near €17,000 translate to roughly €2,450 annual savings and a 6.9-year payback under typical tariffs.
Offsets roughly 5.8 tonnes of CO2 annually.