Dated, weather-based
Tomorrow's forecast
Tomorrow's value is a weather-based estimate for Friday, October 23, 2026: 31.1 kWh from the 10 kWp reference system, with a likely range of 25.8 kWh–32.7 kWh. It changes with the next weather forecast.
Poland · 10 kWp reference system
Chorzów solar forecast and PV yield
Forecast target: . Any “tomorrow” label on this page refers to this dated target.
- Tomorrow's forecast
- 31.1 kWh 10 kWp reference system
- Typical annual output
- 10,729 kWh 10 kWp reference system
- Typical specific yield
- 1,073 kWh/kWp Per year
Friday, October 23, 2026
About 31.1 kWh tomorrow
For a standard 10 kWp south-facing system in Chorzów, GridPassport estimates 31.1 kWh on Friday, October 23, 2026, with a likely range of 25.8-32.7 kWh. The strongest production window is expected at 11:00-15:00 local time.
Updated Oct 22, 2026, 04:01 AM GMT+2 · Automatically refreshed- Likely range
- 25.8-32.7 kWh
- Strongest window
- 11:00-15:00
- Confidence
- medium
Typical year
Solar production month by month in Chorzów
A standard 10 kWp system produces about 10,729 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
401Jan
555Feb
942Mar
1160Apr
1224May
1271Jun
1311Jul
1231Aug
1026Sep
798Oct
459Nov
351Dec
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Chorzów's solar profile different?The typical annual yield is about 1,073 kWh per installed kWp, ranking Chorzów #18 of 70 modelled locations in Poland. That is 2% above the median of the 70 Poland locations in this dataset. July is typically the strongest month and December the weakest; the stronger month produces about 3.7 times as much.
See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuaryMonthly output401 kWhDaily average12.9 kWh/dayYear-to-year variation±105 kWh
MonthFebruaryMonthly output555 kWhDaily average19.8 kWh/dayYear-to-year variation±112 kWh
MonthMarchMonthly output942 kWhDaily average30.4 kWh/dayYear-to-year variation±175 kWh
MonthAprilMonthly output1,160 kWhDaily average38.7 kWh/dayYear-to-year variation±193 kWh
MonthMayMonthly output1,224 kWhDaily average39.5 kWh/dayYear-to-year variation±199 kWh
MonthJuneMonthly output1,271 kWhDaily average42.4 kWh/dayYear-to-year variation±162 kWh
MonthJulyMonthly output1,311 kWhDaily average42.3 kWh/dayYear-to-year variation±140 kWh
MonthAugustMonthly output1,231 kWhDaily average39.7 kWh/dayYear-to-year variation±123 kWh
MonthSeptemberMonthly output1,026 kWhDaily average34.2 kWh/dayYear-to-year variation±157 kWh
MonthOctoberMonthly output798 kWhDaily average25.8 kWh/dayYear-to-year variation±170 kWh
MonthNovemberMonthly output459 kWhDaily average15.3 kWh/dayYear-to-year variation±95 kWh
MonthDecemberMonthly output351 kWhDaily average11.3 kWh/dayYear-to-year variation±92 kWh
How to read and use the data
Chorzów solar forecast: daily weather versus long-term PV yield
The daily and annual figures answer different questions. Use the dated forecast to plan tomorrow, and the PVGIS specific yield to compare locations or estimate a typical year.
Multi-year climate baseline
PVGIS specific yield
Chorzów's PVGIS specific yield is about 1,073 kWh/kWp per year. It is a multi-year climate benchmark, not a prediction for tomorrow or for this calendar year. In the PVGIS profile, July is typically the strongest month and December the weakest.
3, 5 and 10 kWp reference systems
Scale the same assumptions to your system size
SystemTomorrow estimate (likely range)PVGIS typical year
3 kWpTomorrow estimate (likely range)9.3 kWh7.7 kWh–9.8 kWhPVGIS typical year3,219 kWh/year
5 kWpTomorrow estimate (likely range)15.6 kWh12.9 kWh–16.4 kWhPVGIS typical year5,365 kWh/year
10 kWpTomorrow estimate (likely range)31.1 kWh25.8 kWh–32.7 kWhPVGIS typical year10,729 kWh/year
Linear reference scaling only: south-facing, 35° tilt and 14% system losses. It does not resize inverter clipping, shade or local roof constraints.
From forecast to a household plan
Battery, EV, heat pump and flexible loads
Treat the forecast as a gross solar-energy budget before household base load and conversion losses. The numbers support scheduling; they do not guarantee surplus.
Battery
Keep room for the solar window
Use 11:00-15:00 as the first candidate charging window. Battery state of charge, reserve settings and inverter limits still decide how much can be stored.
EV
Compare the charge with the 5 kWp budget
The scaled 5 kWp estimate is 15.6 kWh before household use. Compare the remainder after base load with the planned EV charge and stagger charging if needed.
Heat pump
Shift only flexible thermal demand
If comfort controls allow it, place discretionary hot-water heating or pre-heating inside 11:00-15:00. Never override frost protection, hygiene cycles or manufacturer limits.
Large loads
Avoid stacking appliances
A 3 kWp system scales to about 9.3 kWh for the day before household use. Run flexible loads sequentially during the strongest hours rather than assuming all forecast energy is simultaneous power.
Local questions
Solar forecast FAQ
How much could a 5 kWp solar system produce tomorrow in Chorzów?
Using the same south-facing, 35-degree and 14% loss assumptions, the 5 kWp estimate is 15.6 kWh for Friday, October 23, 2026, with a scaled likely range of 12.9 kWh–16.4 kWh. This is a linear reference-system estimate, not a site survey.
What does 1,073 kWh/kWp mean for Chorzów?
It means the PVGIS multi-year profile produces about 1,073 kWh in a typical year for each installed kWp under the reference assumptions. A 5 kWp system therefore scales to about 5,365 kWh in a typical year before site-specific adjustments.
Is the Chorzów forecast the same as the PVGIS annual estimate?
No. Tomorrow's forecast uses dated weather and an uncertainty band for one day. The PVGIS figure is a multi-year climate-based specific yield used for typical monthly and annual comparisons.
When should a battery, EV or heat pump use solar in Chorzów?
Start with 11:00-15:00, then check household base load, battery headroom, EV energy required and heat-pump safety or comfort constraints. The forecast estimates daily energy, not guaranteed instantaneous surplus.
Nearby solar forecasts
Compare Chorzów with nearby cities
Tomorrow, in one email
Get Chorzów's solar forecast by email
Tomorrow's expected production, likely range and strongest hours. One useful email each day.
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.
CSV and JSON snapshots are published under CC BY 4.0 with source attribution.