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Calculate your solar return on investment

A full financial model for photovoltaics in Poland: PVGIS solar production for your location, URE-based electricity prices, net-billing settlement and market system costs, resulting in payback period, 25-year NPV and CO2 offset.

Your system

Prefer to click your location on a map? Open the solar map

A battery stores midday surplus for evening use, raising self-consumption

Total G11 price incl. distribution, based on URE-approved tariffs

Average monthly market price used in net-billing settlement

Share of solar energy you use directly at home

Results: Calculate

Data sources and assumptions

  • Solar production: PVGIS v5.3 (EU Joint Research Centre, SARAH3 satellite data) for your exact coordinates, with 14 percent system losses and 0.5 percent yearly panel degradation.
  • Electricity price: editable default reflecting total G11 household price (energy plus distribution) based on tariffs approved by URE, the Polish energy regulator.
  • Settlement: Polish net-billing for prosumers. Self-consumed energy saves the full retail price, energy exported to the grid is credited at the monthly market price RCEm.
  • System cost: editable default based on publicly available Polish market averages per kWp for complete residential installations.
  • CO2 offset: 0.6 kg CO2 per kWh, the KOBiZE emission factor for the Polish power grid.
  • Battery storage: shifts surplus that would be exported at RCEm into self-consumption at the retail price, about 250 effective full cycles a year including losses; default cost 2200 PLN per kWh, one replacement after 15 years at half of today's price.

This is a simplified estimate for orientation purposes and not an investment advice or an offer. Actual results depend on your consumption profile, tariff and installation details. Contact us for a personalised analysis.

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