Poznań, Stary Rynek

Poland · 10 kWp reference system

Poznań solar forecast

Photo: Aneta Pawska, CC BY-SA 4.0. Cropped, resized and converted to WebP by GridPassport.

Wednesday, August 5, 2026

About 35.5 kWh tomorrow

For a standard 10 kWp south-facing system in Poznań, GridPassport estimates 35.5 kWh on Wednesday, August 5, 2026, with a likely range of 24.3-45.6 kWh. The strongest production window is expected at 09:00-13:00 local time.

Updated Aug 4, 2026, 08:53 PM GMT+2 · fresh snapshot
Likely range
24.3-45.6 kWh
Strongest window
09:00-13:00
Confidence
medium
Forecast my solar output

Typical year

Solar production month by month in Poznań

A standard 10 kWp system produces about 10,540 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.

Values are kWh per month. Source: European Commission JRC PVGIS.

What makes Poznań's solar profile different? The typical annual yield is about 1,054 kWh per installed kWp, ranking Poznań #6 of 10 modelled locations in Poland. That is close to the median of the 10 Poland locations in this dataset. July is typically the strongest month and December the weakest; the stronger month produces about 5.2 times as much.

See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuary Monthly output328 kWh Daily average10.6 kWh/day Year-to-year variation±71 kWh
MonthFebruary Monthly output516 kWh Daily average18.4 kWh/day Year-to-year variation±124 kWh
MonthMarch Monthly output907 kWh Daily average29.3 kWh/day Year-to-year variation±178 kWh
MonthApril Monthly output1,237 kWh Daily average41.2 kWh/day Year-to-year variation±195 kWh
MonthMay Monthly output1,316 kWh Daily average42.4 kWh/day Year-to-year variation±188 kWh
MonthJune Monthly output1,317 kWh Daily average43.9 kWh/day Year-to-year variation±132 kWh
MonthJuly Monthly output1,317 kWh Daily average42.5 kWh/day Year-to-year variation±140 kWh
MonthAugust Monthly output1,232 kWh Daily average39.7 kWh/day Year-to-year variation±134 kWh
MonthSeptember Monthly output1,047 kWh Daily average34.9 kWh/day Year-to-year variation±150 kWh
MonthOctober Monthly output709 kWh Daily average22.9 kWh/day Year-to-year variation±149 kWh
MonthNovember Monthly output363 kWh Daily average12.1 kWh/day Year-to-year variation±94 kWh
MonthDecember Monthly output252 kWh Daily average8.1 kWh/day Year-to-year variation±61 kWh

Nearby solar forecasts

Compare Poznań with nearby cities

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Method and data

Every city uses a 10 kWp system facing south at 35 degrees with 14% system losses. Tomorrow's figure combines hourly weather with GridPassport's PV production and uncertainty model. The monthly profile uses the European Commission JRC PVGIS multi-year climate series. Roof direction, shade, snow, dirt, inverter clipping and local weather can change real output.