Dated, weather-based
Tomorrow's forecast
Tomorrow's value is a weather-based estimate for Tuesday, September 1, 2026: 41.4 kWh from the 10 kWp reference system, with a likely range of 27.8 kWh–47.5 kWh. It changes with the next weather forecast.
Norway · 10 kWp reference system
Oslo solar forecast and PV yield
Photo: Orjanarvola,CC BY-SA 4.0. Cropped, resized and converted to WebP by GridPassport.
Forecast target: . Any “tomorrow” label on this page refers to this dated target.
- Tomorrow's forecast
- 41.4 kWh 10 kWp reference system
- Typical annual output
- 9,478 kWh 10 kWp reference system
- Typical specific yield
- 948 kWh/kWp Per year
Tuesday, September 1, 2026
About 41.4 kWh tomorrow
For a standard 10 kWp south-facing system in Oslo, GridPassport estimates 41.4 kWh on Tuesday, September 1, 2026, with a likely range of 27.8-47.5 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
- 27.8-47.5 kWh
- Strongest window
- 12:00-16:00
- Confidence
- medium
How to read and use the data
Oslo 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
Oslo's PVGIS specific yield is about 948 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)12.4 kWh8.3 kWh–14.3 kWhPVGIS typical year2,843 kWh/year
5 kWpTomorrow estimate (likely range)20.7 kWh13.9 kWh–23.8 kWhPVGIS typical year4,739 kWh/year
10 kWpTomorrow estimate (likely range)41.4 kWh27.8 kWh–47.5 kWhPVGIS typical year9,478 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 20.7 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 12.4 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 Oslo?
Using the same south-facing, 35-degree and 14% loss assumptions, the 5 kWp estimate is 20.7 kWh for Tuesday, September 1, 2026, with a scaled likely range of 13.9 kWh–23.8 kWh. This is a linear reference-system estimate, not a site survey.
What does 948 kWh/kWp mean for Oslo?
It means the PVGIS multi-year profile produces about 948 kWh in a typical year for each installed kWp under the reference assumptions. A 5 kWp system therefore scales to about 4,739 kWh in a typical year before site-specific adjustments.
Is the Oslo 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 Oslo?
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 Oslo
A standard 10 kWp system produces about 9,478 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
161Jan
416Feb
927Mar
1173Apr
1327May
1364Jun
1303Jul
1118Aug
848Sep
528Oct
213Nov
101Dec
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Oslo's solar profile different?The typical annual yield is about 948 kWh per installed kWp, ranking Oslo #2 of 7 modelled locations in Norway. That is 15% above the median of the 7 Norway locations in this dataset. June is typically the strongest month and December the weakest; the stronger month produces about 13.6 times as much.
See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuaryMonthly output161 kWhDaily average5.2 kWh/dayYear-to-year variation±49 kWh
MonthFebruaryMonthly output416 kWhDaily average14.9 kWh/dayYear-to-year variation±105 kWh
MonthMarchMonthly output927 kWhDaily average29.9 kWh/dayYear-to-year variation±152 kWh
MonthAprilMonthly output1,173 kWhDaily average39.1 kWh/dayYear-to-year variation±178 kWh
MonthMayMonthly output1,327 kWhDaily average42.8 kWh/dayYear-to-year variation±170 kWh
MonthJuneMonthly output1,364 kWhDaily average45.5 kWh/dayYear-to-year variation±140 kWh
MonthJulyMonthly output1,303 kWhDaily average42.0 kWh/dayYear-to-year variation±174 kWh
MonthAugustMonthly output1,118 kWhDaily average36.1 kWh/dayYear-to-year variation±108 kWh
MonthSeptemberMonthly output848 kWhDaily average28.3 kWh/dayYear-to-year variation±127 kWh
MonthOctoberMonthly output528 kWhDaily average17.0 kWh/dayYear-to-year variation±106 kWh
MonthNovemberMonthly output213 kWhDaily average7.1 kWh/dayYear-to-year variation±85 kWh
MonthDecemberMonthly output101 kWhDaily average3.3 kWh/dayYear-to-year variation±33 kWh
Nearby solar forecasts
Compare Oslo with nearby cities
Tomorrow, in one email
Get Oslo'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.