How much will solar panels produce in Mainz?

A 8 kWp system facing south at 35° tilt in Mainz produces about 9,049 kWh a year. In a weak year that is 7,506 kWh, in a good one 10,592 kWh — 1,131 kWh per kWp.

That’s about 259% of a typical home’s yearly use (3,500 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 8 kWp 270 kWh, range 201–340FebFebruary: 8 kWp 472 kWh, range 345–599MarMarch: 8 kWp 850 kWh, range 641–1,059AprApril: 8 kWp 1,040 kWh, range 846–1,233MayMay: 8 kWp 1,099 kWh, range 890–1,307JunJune: 8 kWp 1,163 kWh, range 933–1,393JulJuly: 8 kWp 1,143 kWh, range 927–1,358AugAugust: 8 kWp 1,057 kWh, range 858–1,256SepSeptember: 8 kWp 909 kWh, range 734–1,084OctOctober: 8 kWp 529 kWh, range 392–667NovNovember: 8 kWp 297 kWh, range 213–381DecDecember: 8 kWp 208 kWh, range 145–272

kWh per month

A typical day in June

The sunniest month in Mainz. Output peaks around 12:00 solar time, at about 4.6 kWh in the best hour.

0:006:0012:0018:0023:00 4.6 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 201 270 340
February 345 472 599
March 641 850 1,059
April 846 1,040 1,233
May 890 1,099 1,307
June 933 1,163 1,393
July 927 1,143 1,358
August 858 1,057 1,256
September 734 909 1,084
October 392 529 667
November 213 297 381
December 145 208 272
Year 7,506 9,049 10,592

The months don’t add up exactly to the yearly figure, because each one is the typical value across many years.

Common questions

How much do solar panels produce in winter in Mainz?

From November to February the system produces about 1,248 kWh, which is 14% of the year. The weakest month (December) gives roughly 208 kWh.

Is an east-west roof worth it in Mainz?

An east-west system typically produces 10–25% less per kWp than one facing south, but spreads production more evenly through the day. The exact difference depends on tilt and shading.

Compare an east-west roof for Mainz

Ground mount or roof in Mainz?

A ground mount can be tilted and aimed freely, which can add some yield, but it costs more and needs space. Compare both for your own plot.

Check a ground-mounted system in Mainz

Your roof is not an average roof

Set your own tilt, direction, shading and inverter limit and get a range for your address.

Calculate for my roof

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Climate data: Photovoltaic Geographical Information System (PVGIS) — European Commission, Joint Research Centre