Dated, weather-based
Tomorrow's forecast
Tomorrow's value is a weather-based estimate for Tuesday, September 1, 2026: 43.7 kWh from the 10 kWp reference system, with a likely range of 34.5 kWh–48.6 kWh. It changes with the next weather forecast.
Belgium · 10 kWp reference system
Namur solar forecast and PV yield
Photo: CEphoto, Uwe Aranas,CC BY-SA 3.0. Cropped, resized and converted to WebP by GridPassport.
Forecast target: . Any “tomorrow” label on this page refers to this dated target.
- Tomorrow's forecast
- 43.7 kWh 10 kWp reference system
- Typical annual output
- 10,521 kWh 10 kWp reference system
- Typical specific yield
- 1,052 kWh/kWp Per year
Tuesday, September 1, 2026
About 43.7 kWh tomorrow
For a standard 10 kWp south-facing system in Namur, GridPassport estimates 43.7 kWh on Tuesday, September 1, 2026, with a likely range of 34.5-48.6 kWh. The strongest production window is expected at 12:00-16:00 local time.
Updated Aug 31, 2026, 01:01 AM GMT+2 · fresh snapshot- Likely range
- 34.5-48.6 kWh
- Strongest window
- 12:00-16:00
- Confidence
- medium
How to read and use the data
Namur 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
Namur's PVGIS specific yield is about 1,052 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, May 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)13.1 kWh10.3 kWh–14.6 kWhPVGIS typical year3,156 kWh/year
5 kWpTomorrow estimate (likely range)21.9 kWh17.3 kWh–24.3 kWhPVGIS typical year5,261 kWh/year
10 kWpTomorrow estimate (likely range)43.7 kWh34.5 kWh–48.6 kWhPVGIS typical year10,521 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 12:00-16:00 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 21.9 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 12:00-16:00. Never override frost protection, hygiene cycles or manufacturer limits.
Large loads
Avoid stacking appliances
A 3 kWp system scales to about 13.1 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 Namur?
Using the same south-facing, 35-degree and 14% loss assumptions, the 5 kWp estimate is 21.9 kWh for Tuesday, September 1, 2026, with a scaled likely range of 17.3 kWh–24.3 kWh. This is a linear reference-system estimate, not a site survey.
What does 1,052 kWh/kWp mean for Namur?
It means the PVGIS multi-year profile produces about 1,052 kWh in a typical year for each installed kWp under the reference assumptions. A 5 kWp system therefore scales to about 5,261 kWh in a typical year before site-specific adjustments.
Is the Namur 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 Namur?
Start with 12:00-16:00, 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 Namur
A standard 10 kWp system produces about 10,521 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
367Jan
547Feb
925Mar
1192Apr
1275May
1271Jun
1275Jul
1161Aug
1028Sep
732Oct
438Nov
312Dec
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Namur's solar profile different?The typical annual yield is about 1,052 kWh per installed kWp, ranking Namur #3 of 8 modelled locations in Belgium. That is close to the median of the 8 Belgium locations in this dataset. May is typically the strongest month and December the weakest; the stronger month produces about 4.1 times as much.
See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuaryMonthly output367 kWhDaily average11.8 kWh/dayYear-to-year variation±82 kWh
MonthFebruaryMonthly output547 kWhDaily average19.5 kWh/dayYear-to-year variation±149 kWh
MonthMarchMonthly output925 kWhDaily average29.8 kWh/dayYear-to-year variation±177 kWh
MonthAprilMonthly output1,192 kWhDaily average39.7 kWh/dayYear-to-year variation±178 kWh
MonthMayMonthly output1,275 kWhDaily average41.1 kWh/dayYear-to-year variation±175 kWh
MonthJuneMonthly output1,271 kWhDaily average42.4 kWh/dayYear-to-year variation±161 kWh
MonthJulyMonthly output1,275 kWhDaily average41.1 kWh/dayYear-to-year variation±159 kWh
MonthAugustMonthly output1,161 kWhDaily average37.5 kWh/dayYear-to-year variation±139 kWh
MonthSeptemberMonthly output1,028 kWhDaily average34.3 kWh/dayYear-to-year variation±90 kWh
MonthOctoberMonthly output732 kWhDaily average23.6 kWh/dayYear-to-year variation±104 kWh
MonthNovemberMonthly output438 kWhDaily average14.6 kWh/dayYear-to-year variation±105 kWh
MonthDecemberMonthly output312 kWhDaily average10.1 kWh/dayYear-to-year variation±99 kWh
Nearby solar forecasts
Compare Namur with nearby cities
Tomorrow, in one email
Get Namur'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.