Germany: solar plant site data
Solar power plant in Viersen, Germany: yield, tilt angle and row spacing
Viersen: 1,063 kWh per kWp a year at the optimal tilt of 40°, 2° east of south (PVGIS). 1.7% above the median of the main cities of Germany (1,045). #71 of 193 main cities of Germany by yield. For comparison, Kyiv: 1,114 kWh/kWp — 4.6% less here.
Viersen is in North Rhine-Westphalia. Population 76,153 (GeoNames). 44 m above sea level. 8 km away: Mönchengladbach, the nearest bigger city, 1,071 kWh/kWp — 0.8% less here. 14.29 m between rows, pitch 17.95 m, GCR 0.27 (latitude 51.3°).
- Yield of 1 kWp
- 1,063kWh/year
- Tilt
- 40°2° east of south
- 10 kW
- 10,628kWh/year
- Row pitch
- 17.95m · GCR 0.27
- Rank in the country
- 71of 193 cities
Ground frame designer
A ground frame for a solar plant: Viersen
Latitude 51.3°: 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: 128 kWh/kWp, December: 32 — 4.0 times less.
January: 39 against the median of 35 for the main cities of Germany, 11.4% more.
| kWp | A year | May | December |
|---|---|---|---|
| 5 | 5,314 | 640 | 160 |
| 10 | 10,628 | 1,280 | 320 |
| 15 | 15,942 | 1,920 | 480 |
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.