Is solar worth it in Poland in 2026
Whether it pays depends on your house, not on an average. Enter your municipality, size and consumption, then your quoted price.
Yearly saving on your bills
PLN 3,425
6,300 kWh produced · 27 % used on site
| Used directly and from the battery | 1,698 kWh |
| Exported to the grid | 4,603 kWh |
| Deposit (×1.23) | PLN 1,569 |
| Deposit spent on energy | PLN 1,408 |
| Overpayment refunded | PLN 162 |
| Bill before / after | PLN 4,373 / PLN 1,110 |
| Pays back in 10 years up to | PLN 34,253 |
Hourly model of an average day in each month; surplus priced at the last 12 months of RCEm (PSE) plus the gain from negative RCE counted as zero. An estimate, not an offer; fixed charges excluded.
Solar pays in Poland in 2026 when the house uses much of its power while the panels are working and the system is not oversized. The reason is simple: a kilowatt-hour used on the spot saves the full bill price, about PLN 1.09 on the G11 tariff, while one exported to the grid becomes a deposit worth a few tens of groszy on average, which only pays the energy part of the bill. For 6 kWp in Warsaw and 4,000 kWh of use, the yearly saving is about PLN 3,148 when nobody is home in the daytime, PLN 3,425 when use is spread evenly and PLN 3,732 when someone works from home. At a price of PLN 24,000 that means payback in 7.6, 7.0 or 6.4 years. Panels work for 25–30 years, and net-billing settlement lasts 15 years from connection. The calculator above does the same for your municipality and your quote.
Checked by Radif Partners · Editorial policy · Method
The same system, three different houses
Time of use says most about whether solar pays. The table shows a 6 kWp system in Warsaw with 4,000 kWh of use and three household routines. Only the time at which the house draws power changes, yet the saving differs by several hundred zloty a year.
| When you use power | Used on site | Saving | Payback at PLN 24,000 | at PLN 32,000 |
|---|---|---|---|---|
| out during the day | 21 % | PLN 3,148 | 7.6 years | 10.2 years |
| evenly round the clock | 27 % | PLN 3,425 | 7.0 years | 9.3 years |
| working from home | 34 % | PLN 3,732 | 6.4 years | 8.6 years |
PLN 24,000 and PLN 32,000 are not market prices, only example figures for comparison. Enter your own quote in the calculator or in the mini-calculator below.
How many years to pay back?
Payback
8.0 years
| Gain after the 15 net-billing years | PLN 21,000 |
| Price for an 8-year payback | PLN 24,000 |
No change in power prices and no panel degradation assumed.
Five conditions under which solar pays
First, a roof without shade, facing south, east or west. Second, a size matched to consumption, not to the roof: under net-billing each extra kilowatt adds less and less. Third, daytime use: a heat-pump water heater, washing machine, dishwasher, charging a car at midday. Fourth, a quote checked on the solar panel cost page. Fifth, settlement at RCE, which has a 30% instead of 20% refund cap and never goes below zero.
If most of these conditions are met, simple payback usually falls within 6–9 years. If none is, consider a smaller system or solar with a home battery with a grant from the Przydomowe Magazyny Energii programme.