Solar panels in Warsaw
A 6 kWp home system in Warsaw is modelled to produce about 6,085 kWh a year, or 1,014 kWh per installed kWp, from PVGIS climate data at the city's coordinates. The City of Warsaw accepts applications from 1 September 2026 to 31 March 2027 for renewable energy grants, including PV and energy storage, for investments carried out in 2027. Two verified local rules and their sources are listed below. Self-consumption matters: at 70% used at home rather than 30%, payback falls from 16.5 to 9.1 years. No other city we cover in Poland has a lower yield than Warsaw. For comparison, Kraków reaches 1,045.
Month by month in Warsaw
Modelled output of a 6 kWp system at 35° facing south (towards the equator), from PVGIS climate data (PVGIS-SARAH3, 2005 to 2023).
| Month | kWh | Share of year |
|---|---|---|
| January | 194 | 3.2% |
| February | 291 | 4.8% |
| March | 518 | 8.5% |
| April | 688 | 11.3% |
| May | 757 | 12.4% |
| June | 781 | 12.8% |
| July | 770 | 12.7% |
| August | 728 | 12.0% |
| September | 600 | 9.9% |
| October | 415 | 6.8% |
| November | 195 | 3.2% |
| December | 148 | 2.4% |
- Best month: June (781 kWh). Weakest: December (148 kWh), a 5.3x difference.
- May, June, July produce 37.9% of the year; January, November, December produce 8.8%.
- Year-to-year variation: about 284 kWh (4.7%, one standard deviation).
- Sunlight reaching the panels: 1,312 kWh per m² a year.
Local rules and support in Warsaw
Rules set by the city or its region, on top of the national scheme. Each one was checked against the official source on the date shown.
- City of Warsaw
Warsaw renewable energy grant: call for 2027 investments
The City of Warsaw accepts applications from 1 September 2026 to 31 March 2027 for renewable energy grants, including PV and energy storage, for investments carried out in 2027. The grant agreement must be signed before the investment starts.
Source: Urząd m.st. Warszawy (Warszawa 19115), Dotacje dla mieszkańców na realizację inwestycji, które wykorzystują lokalne źródła energii odnawialnej (checked 2026-09-25)
- City of Warsaw
Warsaw PV and storage grant amounts
Under the city's amounts table, a PV installation can receive up to 15,000 PLN, at most 1,500 PLN per kW, and energy storage of at least 2 kWh up to 10,000 PLN, at most 2,000 PLN per kWh.
Source: Urząd m.st. Warszawy (Warszawa 19115), Kwoty dotacji na OZE (checked 2026-09-25)
How Warsaw compares
Warsaw ranks 3 of 3 for yield among the cities we model in Poland, and 30 of 41 across every country on Solar Figures. Within one country the prices are the same, so a payback gap between these cities comes from sunshine alone.
| City | kWh per kWp / yr | Payback (PLN) |
|---|---|---|
| Kraków | 1,045 | 16.0 yrs |
| Gdańsk | 1,028 | 16.2 yrs |
| Warsaw | 1,014 | 16.5 yrs |
| National reference point (country page) | 1,014 | 16.5 yrs |
Closest yield abroad: Brussels (1,009 kWh per kWp), Berlin (1,022 kWh per kWp), Antwerp (1,005 kWh per kWp).
What moves the payback in Warsaw
Power you use yourself is worth the retail price (PLN 1.00 per kWh); power you export earns PLN 0.30. So the share you use at home, by running appliances in daylight or adding a battery, changes the payback. The system cost stays the same in every row (a battery would add to it).
| Used at home | Year-1 savings | Payback |
|---|---|---|
| 20% | PLN 2,651 | 19.8 yrs |
| 30% (our default) | PLN 3,072 | 16.5 yrs |
| 50% | PLN 3,916 | 12.5 yrs |
| 70% | PLN 4,759 | 9.1 yrs |
- Net system cost after incentives: PLN 42,000 for 6 kWp.
- Incentive modelled: No reliable standalone PV grant in 2026 -- Moj Prad closed Sept 2025; KPO replacement funds PV only when BUNDLED with a battery, in short budget-limited rounds..
- 25-year net savings at our default: PLN 69,583.
Best panel angle in Warsaw
At latitude 52.23°N, PVGIS finds the fixed tilt and direction that maximise yearly output. Our figures use a common 35° roof; the table shows what the optimum adds.
| Setup | Tilt | Facing | kWh per kWp / yr |
|---|---|---|---|
| Standard roof (used on this page) | 35° | south | 1,014 |
| PVGIS optimum | 39° | south (177°) | 1,016 |
The optimum adds 0.2% a year over the standard roof in Warsaw. Most of a roof's value comes from its direction: a roof facing away from the equator loses far more than a few degrees of tilt.
See the full Poland picture on our Poland solar page, or the national incentives in our Poland solar guide.
Sources and method
Figures computed 2026-09-25 for a 6 kWp system, 35° tilt, 14% system losses, terrain shading on. An estimate, not a quote: your installer's quote will be exact.
- PVGIS 5.3 PVcalc (PVGIS-SARAH3), European Commission JRC (checked 2026-09-25)
- Poland tariff and incentive inputs (see DATA_SOURCES.md) (checked 2026-06-21)
- Poland tariff and incentive inputs (see DATA_SOURCES.md) (checked 2026-06-21)
- Urząd m.st. Warszawy (Warszawa 19115): Dotacje dla mieszkańców na realizację inwestycji, które wykorzystują lokalne źródła energii odnawialnej (checked 2026-09-25)
- Urząd m.st. Warszawy (Warszawa 19115): Kwoty dotacji na OZE (checked 2026-09-25)
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