Poland
Warsaw rooftop solar case study
Net-billing reforms plus decreasing hardware costs keep Polish rooftops cash-flow positive.
Payback / System Size
System Size
7.1 kW
Annual Yield
7,600 kWh per year
Payback
5.4 years
Avg install cost
€10,500
Annual savings
€1,950 per year
Lifetime value
€31,500
Why this city shines
Warsaw single-family homes size 7.1 kW arrays that feed heat pumps and export into the new hourly settlement scheme.
Rooftop solar in Warsaw works with a 7.1 kW array that delivers about 7,600 kWh yearly. Install costs near €10,500 translate to roughly €1,950 annual savings and a 5.4-year payback under typical tariffs.
Offsets roughly 3.1 tonnes of CO2 annually.