Germany · 10 kWp reference system
Cologne solar forecast
Photo: Martin Falbisoner, CC BY-SA 4.0. Cropped, resized and converted to WebP by GridPassport.
Wednesday, August 5, 2026
About 38.0 kWh tomorrow
For a standard 10 kWp south-facing system in Cologne, GridPassport estimates 38.0 kWh on Wednesday, August 5, 2026, with a likely range of 27.2-46.7 kWh. The strongest production window is expected at 10:00-14:00 local time.
Updated Aug 4, 2026, 08:53 PM GMT+2 · fresh snapshot- Likely range
- 27.2-46.7 kWh
- Strongest window
- 10:00-14:00
- Confidence
- medium
Typical year
Solar production month by month in Cologne
A standard 10 kWp system produces about 10,421 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 Cologne's solar profile different? The typical annual yield is about 1,042 kWh per installed kWp, ranking Cologne #6 of 12 modelled locations in Germany. That is close to the median of the 12 Germany locations in this dataset. May is typically the strongest month and December the weakest; the stronger month produces about 4.0 times as much.
See the 12-month data
Nearby solar forecasts
Compare Cologne with nearby cities
Tomorrow, in one email
Get Cologne'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.