Germany: solar plant site data
Solar power plant in Mainz, Germany: yield, tilt angle and row spacing
Mainz: 1,109 kWh per kWp a year at the optimal tilt of 38°, 2° east of south (PVGIS). 6.2% above the median of the main cities of Germany (1,045). #28 of 193 main cities of Germany by yield. For comparison, Kyiv: the same 1,114 kWh/kWp.
Mainz is in Rhineland-Palatinate. Population 222,889 (GeoNames). 125 m above sea level. 12 km away: Wiesbaden, the nearest bigger city, 1,092 kWh/kWp — 1.6% more here. 12.35 m between rows, pitch 16.12 m, GCR 0.30 (latitude 50.0°).
- Yield of 1 kWp
- 1,109kWh/year
- Tilt
- 38°2° east of south
- 10 kW
- 11,091kWh/year
- Row pitch
- 16.12m · GCR 0.30
- Rank in the country
- 28of 193 cities
Ground frame designer
A ground frame for a solar plant: Mainz
Latitude 50.0°: the tilt and the row pitch follow it. Enter the snow and wind for Germany in the designer, by the national annex to the Eurocode.
- No sign-up
- Snow and wind check
- Drawings and estimate
Yield by month
May: 133 kWh/kWp, December: 31 — 4.3 times less.
March: 103 against the median of 92 for the main cities of Germany, 12.0% more.
| kWp | A year | May | December |
|---|---|---|---|
| 5 | 5,546 | 665 | 155 |
| 10 | 11,091 | 1,330 | 310 |
| 15 | 16,637 | 1,995 | 465 |
Fixed tilt facing south
What a table yields at another tilt than the optimal 38° — for roofs and frames with a standard slope.
| Tilt | A year | Against the optimum |
|---|---|---|
| 38° (optimum) | 1,109 | — |
| 15° | 1,044 | −5.9% |
| 30° | 1,101 | −0.7% |
| 45° | 1,103 | −0.5% |
| 90° | 777 | −29.9% |
Snow and wind loads
Snow and wind loads for a site in Germany follow DIN EN 1991-1-3/NA (snow load zone, Schneelastzone) and DIN EN 1991-1-4/NA (wind zone, Windzone). Solispec computes loads by the Ukrainian DBN V.1.2-2 only, so this page shows no snow or wind values for Germany: enter the characteristic values from these documents in the designer’s «Own snow S0» and «Own wind W0» fields.
The frame calculation for such a site is preliminary: before installation it must be checked by an engineer who works to the country’s standards.
Nearby cities
Sources
- PVGIS © European Union, 2001–2026 — yield, tilt and azimuth, data as of 2026-10-10
- GeoNames (CC BY 4.0) — coordinates, elevation, population and divisions (changed)
- Where to take snow and wind loads from: DIN EN 1991-1-3/NA, DIN EN 1991-1-4/NA
- How these numbers are computed
Preliminary calculation: a design needs an engineer’s check.