View of Liège, Belgium

Belgium · 10 kWp reference system

Liège solar forecast

Photo: A.Savin, CC BY-SA 3.0. Cropped, resized and converted to WebP by GridPassport.

Wednesday, August 5, 2026

About 33.0 kWh tomorrow

For a standard 10 kWp south-facing system in Liège, GridPassport estimates 33.0 kWh on Wednesday, August 5, 2026, with a likely range of 23.7-41.5 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
23.7-41.5 kWh
Strongest window
12:00-16:00
Confidence
medium
Forecast my solar output

Typical year

Solar production month by month in Liège

A standard 10 kWp system produces about 10,306 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 Liège's solar profile different? The typical annual yield is about 1,031 kWh per installed kWp, ranking Liège #8 of 8 modelled locations in Belgium. That is 2% below the median of the 8 Belgium locations in this dataset. July is typically the strongest month and December the weakest; the stronger month produces about 4.0 times as much.

See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuary Monthly output367 kWh Daily average11.8 kWh/day Year-to-year variation±92 kWh
MonthFebruary Monthly output542 kWh Daily average19.4 kWh/day Year-to-year variation±152 kWh
MonthMarch Monthly output892 kWh Daily average28.8 kWh/day Year-to-year variation±193 kWh
MonthApril Monthly output1,164 kWh Daily average38.8 kWh/day Year-to-year variation±177 kWh
MonthMay Monthly output1,240 kWh Daily average40.0 kWh/day Year-to-year variation±180 kWh
MonthJune Monthly output1,244 kWh Daily average41.5 kWh/day Year-to-year variation±157 kWh
MonthJuly Monthly output1,249 kWh Daily average40.3 kWh/day Year-to-year variation±160 kWh
MonthAugust Monthly output1,134 kWh Daily average36.6 kWh/day Year-to-year variation±131 kWh
MonthSeptember Monthly output1,004 kWh Daily average33.5 kWh/day Year-to-year variation±98 kWh
MonthOctober Monthly output721 kWh Daily average23.3 kWh/day Year-to-year variation±105 kWh
MonthNovember Monthly output435 kWh Daily average14.5 kWh/day Year-to-year variation±115 kWh
MonthDecember Monthly output314 kWh Daily average10.1 kWh/day Year-to-year variation±99 kWh

Nearby solar forecasts

Compare Liège 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.