Dated, weather-based
Tomorrow's forecast
Tomorrow's value is a weather-based estimate for Monday, October 5, 2026: 39.7 kWh from the 10 kWp reference system, with a likely range of 31.8 kWh–44.9 kWh. It changes with the next weather forecast.
Germany · 10 kWp reference system
Ulm solar forecast and PV yield
Forecast target: . Any “tomorrow” label on this page refers to this dated target.
- Tomorrow's forecast
- 39.7 kWh 10 kWp reference system
- Typical annual output
- 11,225 kWh 10 kWp reference system
- Typical specific yield
- 1,122 kWh/kWp Per year
Monday, October 5, 2026
About 39.7 kWh tomorrow
For a standard 10 kWp south-facing system in Ulm, GridPassport estimates 39.7 kWh on Monday, October 5, 2026, with a likely range of 31.8-44.9 kWh. The strongest production window is expected at 13:00-17:00 local time.
Updated Oct 4, 2026, 11:01 PM GMT+2 · Automatically refreshed- Likely range
- 31.8-44.9 kWh
- Strongest window
- 13:00-17:00
- Confidence
- medium
How to read and use the data
Ulm 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
Ulm's PVGIS specific yield is about 1,122 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)11.9 kWh9.5 kWh–13.5 kWhPVGIS typical year3,367 kWh/year
5 kWpTomorrow estimate (likely range)19.9 kWh15.9 kWh–22.4 kWhPVGIS typical year5,612 kWh/year
10 kWpTomorrow estimate (likely range)39.7 kWh31.8 kWh–44.9 kWhPVGIS typical year11,225 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 13:00-17:00 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 19.9 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 13:00-17:00. Never override frost protection, hygiene cycles or manufacturer limits.
Large loads
Avoid stacking appliances
A 3 kWp system scales to about 11.9 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 Ulm?
Using the same south-facing, 35-degree and 14% loss assumptions, the 5 kWp estimate is 19.9 kWh for Monday, October 5, 2026, with a scaled likely range of 15.9 kWh–22.4 kWh. This is a linear reference-system estimate, not a site survey.
What does 1,122 kWh/kWp mean for Ulm?
It means the PVGIS multi-year profile produces about 1,122 kWh in a typical year for each installed kWp under the reference assumptions. A 5 kWp system therefore scales to about 5,612 kWh in a typical year before site-specific adjustments.
Is the Ulm 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 Ulm?
Start with 13:00-17:00, 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 Ulm
A standard 10 kWp system produces about 11,225 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
420Jan
635Feb
1039Mar
1234Apr
1271May
1334Jun
1352Jul
1258Aug
1094Sep
767Oct
444Nov
378Dec
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Ulm's solar profile different?The typical annual yield is about 1,122 kWh per installed kWp, ranking Ulm #5 of 42 modelled locations in Germany. That is 7% above the median of the 42 Germany locations in this dataset. July is typically the strongest month and December the weakest; the stronger month produces about 3.6 times as much.
See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuaryMonthly output420 kWhDaily average13.5 kWh/dayYear-to-year variation±88 kWh
MonthFebruaryMonthly output635 kWhDaily average22.7 kWh/dayYear-to-year variation±191 kWh
MonthMarchMonthly output1,039 kWhDaily average33.5 kWh/dayYear-to-year variation±190 kWh
MonthAprilMonthly output1,234 kWhDaily average41.1 kWh/dayYear-to-year variation±218 kWh
MonthMayMonthly output1,271 kWhDaily average41.0 kWh/dayYear-to-year variation±168 kWh
MonthJuneMonthly output1,334 kWhDaily average44.5 kWh/dayYear-to-year variation±145 kWh
MonthJulyMonthly output1,352 kWhDaily average43.6 kWh/dayYear-to-year variation±140 kWh
MonthAugustMonthly output1,258 kWhDaily average40.6 kWh/dayYear-to-year variation±138 kWh
MonthSeptemberMonthly output1,094 kWhDaily average36.5 kWh/dayYear-to-year variation±141 kWh
MonthOctoberMonthly output767 kWhDaily average24.7 kWh/dayYear-to-year variation±99 kWh
MonthNovemberMonthly output444 kWhDaily average14.8 kWh/dayYear-to-year variation±69 kWh
MonthDecemberMonthly output378 kWhDaily average12.2 kWh/dayYear-to-year variation±92 kWh
Nearby solar forecasts
Compare Ulm with nearby cities
Tomorrow, in one email
Get Ulm'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.