Germany
Berlin rooftop solar case study
Analyzer runs across Germany show 7-9 year payouts driven by high retail tariffs plus dependable feed-in bonuses.
Payback / System Size
System Size
9.8 kW
Annual Yield
8,900 kWh per year
Payback
8.4 years
Avg install cost
€14,200
Annual savings
€2,100 per year
Lifetime value
€32,000
Why this city shines
A Kreuzberg homeowner ran a 9.8 kW plan: 8.9 MWh per year covers weekday EV charging and trims bills by about EUR 2,100.
Rooftop solar in Berlin works with a 9.8 kW array that delivers about 8,900 kWh yearly. Install costs near €14,200 translate to roughly €2,100 annual savings and a 8.4-year payback under typical tariffs.
Offsets roughly 3.6 tonnes of CO2 annually.