Slovenia · 10 kWp reference system
Celje solar forecast
Photo: Reisevogel, CC BY-SA 4.0. Cropped, resized and converted to WebP by GridPassport.
Wednesday, August 5, 2026
About 54.3 kWh tomorrow
For a standard 10 kWp south-facing system in Celje, GridPassport estimates 54.3 kWh on Wednesday, August 5, 2026, with a likely range of 47.8-56.2 kWh. The strongest production window is expected at 12:00-16:00 local time.
Updated Aug 4, 2026, 08:53 PM GMT+2 · fresh snapshot- Likely range
- 47.8-56.2 kWh
- Strongest window
- 12:00-16:00
- Confidence
- high
Typical year
Solar production month by month in Celje
A standard 10 kWp system produces about 11,823 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Celje's solar profile different? The typical annual yield is about 1,182 kWh per installed kWp, ranking Celje #3 of 4 modelled locations in Slovenia. That is 2% below the median of the 4 Slovenia locations in this dataset. July is typically the strongest month and December the weakest; the stronger month produces about 2.9 times as much.
See the 12-month data
Nearby solar forecasts
Compare Celje with nearby cities
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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.