Dated, weather-based
Tomorrow's forecast
Tomorrow's value is a weather-based estimate for Tuesday, September 1, 2026: 8.9 kWh from the 10 kWp reference system, with a likely range of 5.1 kWh–12.5 kWh. It changes with the next weather forecast.
Finland · 10 kWp reference system
Rovaniemi solar forecast and PV yield
Photo: Jari Kolehmainen , Flickr user lindstormORG , Idobi , Andriychenko , Biergerry , Arktikum , and Vincent Guth vingtcent,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
- 8.9 kWh 10 kWp reference system
- Typical annual output
- 8,088 kWh 10 kWp reference system
- Typical specific yield
- 809 kWh/kWp Per year
Tuesday, September 1, 2026
About 8.9 kWh tomorrow
For a standard 10 kWp south-facing system in Rovaniemi, GridPassport estimates 8.9 kWh on Tuesday, September 1, 2026, with a likely range of 5.1-12.5 kWh. The strongest production window is expected at 15:00-19:00 local time.
Updated Aug 31, 2026, 02:01 AM GMT+3 · fresh snapshot- Likely range
- 5.1-12.5 kWh
- Strongest window
- 15:00-19:00
- Confidence
- medium
How to read and use the data
Rovaniemi 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
Rovaniemi's PVGIS specific yield is about 809 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)2.7 kWh1.5 kWh–3.8 kWhPVGIS typical year2,426 kWh/year
5 kWpTomorrow estimate (likely range)4.5 kWh2.5 kWh–6.3 kWhPVGIS typical year4,044 kWh/year
10 kWpTomorrow estimate (likely range)8.9 kWh5.1 kWh–12.5 kWhPVGIS typical year8,088 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 15:00-19:00 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 4.5 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 15:00-19:00. Never override frost protection, hygiene cycles or manufacturer limits.
Large loads
Avoid stacking appliances
A 3 kWp system scales to about 2.7 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 Rovaniemi?
Using the same south-facing, 35-degree and 14% loss assumptions, the 5 kWp estimate is 4.5 kWh for Tuesday, September 1, 2026, with a scaled likely range of 2.5 kWh–6.3 kWh. This is a linear reference-system estimate, not a site survey.
What does 809 kWh/kWp mean for Rovaniemi?
It means the PVGIS multi-year profile produces about 809 kWh in a typical year for each installed kWp under the reference assumptions. A 5 kWp system therefore scales to about 4,044 kWh in a typical year before site-specific adjustments.
Is the Rovaniemi 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 Rovaniemi?
Start with 15:00-19:00, 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 Rovaniemi
A standard 10 kWp system produces about 8,088 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
30Jan
259Feb
874Mar
1209Apr
1343May
1280Jun
1177Jul
961Aug
593Sep
308Oct
53Nov
0Dec
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Rovaniemi's solar profile different?The typical annual yield is about 809 kWh per installed kWp, ranking Rovaniemi #6 of 6 modelled locations in Finland. That is 8% below the median of the 6 Finland locations in this dataset. May is typically the strongest month and December the weakest; the stronger month produces about 22380.3 times as much.
See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuaryMonthly output30 kWhDaily average1.0 kWh/dayYear-to-year variation±16 kWh
MonthFebruaryMonthly output259 kWhDaily average9.3 kWh/dayYear-to-year variation±56 kWh
MonthMarchMonthly output874 kWhDaily average28.2 kWh/dayYear-to-year variation±130 kWh
MonthAprilMonthly output1,209 kWhDaily average40.3 kWh/dayYear-to-year variation±167 kWh
MonthMayMonthly output1,343 kWhDaily average43.3 kWh/dayYear-to-year variation±161 kWh
MonthJuneMonthly output1,280 kWhDaily average42.7 kWh/dayYear-to-year variation±154 kWh
MonthJulyMonthly output1,177 kWhDaily average38.0 kWh/dayYear-to-year variation±158 kWh
MonthAugustMonthly output961 kWhDaily average31.0 kWh/dayYear-to-year variation±129 kWh
MonthSeptemberMonthly output593 kWhDaily average19.8 kWh/dayYear-to-year variation±91 kWh
MonthOctoberMonthly output308 kWhDaily average9.9 kWh/dayYear-to-year variation±91 kWh
MonthNovemberMonthly output53 kWhDaily average1.8 kWh/dayYear-to-year variation±16 kWh
MonthDecemberMonthly output0 kWhDaily average0.0 kWh/dayYear-to-year variation±0 kWh
Nearby solar forecasts
Compare Rovaniemi with nearby cities
Tomorrow, in one email
Get Rovaniemi'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.