Sunrail payback calculator
Change package, kWh price, orientation, shade, and usage pattern to see a realistic payback scenario. Financing is shown alongside the result.
Model
kWh price€0.30 default
Smart / Maxwith battery
Basicdaytime use
Shade and orientation reduce output.
Sources
Energy price data
GlobalPetrolPrices - Greece household electricity price
Publishes Greece residential electricity at EUR 0.223/kWh for September 2025, sourcing RAE and PPC data.
https://www.globalpetrolprices.com/Greece/electricity_prices/
Official Gazette
Greek Ministry of Environment and Energy - Government Gazette B 5074/05.09.2024 on net billing
Official decision covering self-consumption, net-billing style synchronized offsetting, collective self-consumption, and storage.
https://ypen.gov.gr/wp-content/uploads/2024/09/FEK-5074B_05_09_2024-net-billing.pdf