Dated, weather-based
Tomorrow's forecast
Tomorrow's value is a weather-based estimate for Monday, October 5, 2026: 29.6 kWh from the 10 kWp reference system, with a likely range of 20.6 kWh–37.0 kWh. It changes with the next weather forecast.
Poland · 10 kWp reference system
Słupsk solar forecast and PV yield
Forecast target: . Any “tomorrow” label on this page refers to this dated target.
- Tomorrow's forecast
- 29.6 kWh 10 kWp reference system
- Typical annual output
- 10,107 kWh 10 kWp reference system
- Typical specific yield
- 1,011 kWh/kWp Per year
Monday, October 5, 2026
About 29.6 kWh tomorrow
For a standard 10 kWp south-facing system in Słupsk, GridPassport estimates 29.6 kWh on Monday, October 5, 2026, with a likely range of 20.6-37.0 kWh. The strongest production window is expected at 11:00-15:00 local time.
Updated Oct 4, 2026, 11:01 PM GMT+2 · Automatically refreshed- Likely range
- 20.6-37.0 kWh
- Strongest window
- 11:00-15:00
- Confidence
- medium
How to read and use the data
Słupsk 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
Słupsk's PVGIS specific yield is about 1,011 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, June 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)8.9 kWh6.2 kWh–11.1 kWhPVGIS typical year3,032 kWh/year
5 kWpTomorrow estimate (likely range)14.8 kWh10.3 kWh–18.5 kWhPVGIS typical year5,054 kWh/year
10 kWpTomorrow estimate (likely range)29.6 kWh20.6 kWh–37.0 kWhPVGIS typical year10,107 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 14.8 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 8.9 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 Słupsk?
Using the same south-facing, 35-degree and 14% loss assumptions, the 5 kWp estimate is 14.8 kWh for Monday, October 5, 2026, with a scaled likely range of 10.3 kWh–18.5 kWh. This is a linear reference-system estimate, not a site survey.
What does 1,011 kWh/kWp mean for Słupsk?
It means the PVGIS multi-year profile produces about 1,011 kWh in a typical year for each installed kWp under the reference assumptions. A 5 kWp system therefore scales to about 5,054 kWh in a typical year before site-specific adjustments.
Is the Słupsk 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 Słupsk?
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.
Typical year
Solar production month by month in Słupsk
A standard 10 kWp system produces about 10,107 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
249Jan
467Feb
824Mar
1240Apr
1367May
1370Jun
1303Jul
1177Aug
979Sep
646Oct
296Nov
192Dec
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Słupsk's solar profile different?The typical annual yield is about 1,011 kWh per installed kWp, ranking Słupsk #36 of 40 modelled locations in Poland. That is 4% below the median of the 40 Poland locations in this dataset. June is typically the strongest month and December the weakest; the stronger month produces about 7.1 times as much.
See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuaryMonthly output249 kWhDaily average8.0 kWh/dayYear-to-year variation±66 kWh
MonthFebruaryMonthly output467 kWhDaily average16.7 kWh/dayYear-to-year variation±93 kWh
MonthMarchMonthly output824 kWhDaily average26.6 kWh/dayYear-to-year variation±169 kWh
MonthAprilMonthly output1,240 kWhDaily average41.3 kWh/dayYear-to-year variation±167 kWh
MonthMayMonthly output1,367 kWhDaily average44.1 kWh/dayYear-to-year variation±194 kWh
MonthJuneMonthly output1,370 kWhDaily average45.6 kWh/dayYear-to-year variation±131 kWh
MonthJulyMonthly output1,303 kWhDaily average42.0 kWh/dayYear-to-year variation±143 kWh
MonthAugustMonthly output1,177 kWhDaily average38.0 kWh/dayYear-to-year variation±155 kWh
MonthSeptemberMonthly output979 kWhDaily average32.6 kWh/dayYear-to-year variation±124 kWh
MonthOctoberMonthly output646 kWhDaily average20.8 kWh/dayYear-to-year variation±151 kWh
MonthNovemberMonthly output296 kWhDaily average9.9 kWh/dayYear-to-year variation±79 kWh
MonthDecemberMonthly output192 kWhDaily average6.2 kWh/dayYear-to-year variation±45 kWh
Nearby solar forecasts
Compare Słupsk with nearby cities
Tomorrow, in one email
Get Słupsk'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.