Skyscrapers in Frankfurt , August 2020. In the lower right corner, a tower named " Langer Franz ", which was shortened in the 20th century.

Germany · 10 kWp reference system

Frankfurt solar forecast

Photo: Kasa Fue, CC BY-SA 4.0. Cropped, resized and converted to WebP by GridPassport.

Wednesday, August 5, 2026

About 48.0 kWh tomorrow

For a standard 10 kWp south-facing system in Frankfurt, GridPassport estimates 48.0 kWh on Wednesday, August 5, 2026, with a likely range of 35.6-55.8 kWh. The strongest production window is expected at 11:00-15:00 local time.

Updated Aug 4, 2026, 08:53 PM GMT+2 · fresh snapshot
Likely range
35.6-55.8 kWh
Strongest window
11:00-15:00
Confidence
medium
Forecast my solar output

Typical year

Solar production month by month in Frankfurt

A standard 10 kWp system produces about 10,721 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 Frankfurt's solar profile different? The typical annual yield is about 1,072 kWh per installed kWp, ranking Frankfurt #4 of 12 modelled locations in Germany. That is 3% above the median of the 12 Germany locations in this dataset. July is typically the strongest month and December the weakest; the stronger month produces about 4.4 times as much.

See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuary Monthly output336 kWh Daily average10.8 kWh/day Year-to-year variation±88 kWh
MonthFebruary Monthly output562 kWh Daily average20.1 kWh/day Year-to-year variation±140 kWh
MonthMarch Monthly output944 kWh Daily average30.4 kWh/day Year-to-year variation±183 kWh
MonthApril Monthly output1,224 kWh Daily average40.8 kWh/day Year-to-year variation±191 kWh
MonthMay Monthly output1,300 kWh Daily average41.9 kWh/day Year-to-year variation±190 kWh
MonthJune Monthly output1,312 kWh Daily average43.7 kWh/day Year-to-year variation±137 kWh
MonthJuly Monthly output1,326 kWh Daily average42.8 kWh/day Year-to-year variation±126 kWh
MonthAugust Monthly output1,214 kWh Daily average39.2 kWh/day Year-to-year variation±124 kWh
MonthSeptember Monthly output1,063 kWh Daily average35.4 kWh/day Year-to-year variation±150 kWh
MonthOctober Monthly output745 kWh Daily average24.0 kWh/day Year-to-year variation±123 kWh
MonthNovember Monthly output397 kWh Daily average13.2 kWh/day Year-to-year variation±76 kWh
MonthDecember Monthly output298 kWh Daily average9.6 kWh/day Year-to-year variation±53 kWh

Nearby solar forecasts

Compare Frankfurt 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.