Austria
Graz rooftop solar case study
Austria's klimaaktiv program plus cooperative utilities create predictable funding for rooftops.
Payback / System Size
System Size
6.4 kW
Annual Yield
7,600 kWh per year
Payback
5.6 years
Avg install cost
€10,300
Annual savings
€2,000 per year
Lifetime value
€31,500
Why this city shines
Graz hillside villas lean 6.4 kW arrays toward the Mur valley sun, producing 7.6 MWh for under EUR 10,300 installed.
Rooftop solar in Graz works with a 6.4 kW array that delivers about 7,600 kWh yearly. Install costs near €10,300 translate to roughly €2,000 annual savings and a 5.6-year payback under typical tariffs.
Offsets roughly 3.1 tonnes of CO2 annually.