Spain
Barcelona rooftop solar case study
Spanish users see 1,700 kWh per kW resources plus flexible compensation erase most utility spend even on mid-sized roofs.
Payback / System Size
System Size
5.9 kW
Annual Yield
9,100 kWh per year
Payback
5.6 years
Avg install cost
€9,000
Annual savings
€2,150 per year
Lifetime value
€33,500
Why this city shines
Barcelona townhouse owners size 5.9 kW systems that throw off 9.1 MWh and power home offices through Mediterranean daylight.
Rooftop solar in Barcelona works with a 5.9 kW array that delivers about 9,100 kWh yearly. Install costs near €9,000 translate to roughly €2,150 annual savings and a 5.6-year payback under typical tariffs.
Offsets roughly 3.8 tonnes of CO2 annually.