Poland: solar plant site data
Solar power plant in Bydgoszcz, Poland: yield, tilt angle and row spacing
Bydgoszcz: 1,025 kWh per kWp a year at the optimal tilt of 40°, 5° east of south (PVGIS). 3.7% below the median of the main cities of Poland (1,065). #79 of 87 main cities of Poland by yield. For comparison, Kyiv: 1,114 kWh/kWp — 8.0% less here.
Bydgoszcz is in Kuyavian-Pomeranian Voivodeship. Population 330,038 (GeoNames). 37 m above sea level. 108 km away: Poznan, the nearest bigger city, 1,059 kWh/kWp — 3.2% less here. 16.96 m between rows, pitch 20.62 m, GCR 0.23 (latitude 53.1°).
- Yield of 1 kWp
- 1,025kWh/year
- Tilt
- 40°5° east of south
- 10 kW
- 10,254kWh/year
- Row pitch
- 20.62m · GCR 0.23
- Rank in the country
- 79of 87 cities
Ground frame designer
A ground frame for a solar plant: Bydgoszcz
Latitude 53.1°: the tilt and the row pitch follow it. Enter the snow and wind for Poland in the designer, by the national annex to the Eurocode.
- No sign-up
- Snow and wind check
- Drawings and estimate
Yield by month
May: 130 kWh/kWp, December: 25 — 5.2 times less.
November: 31 against the median of 41 for the main cities of Poland, 24.4% less.
| kWp | A year | May | December |
|---|---|---|---|
| 5 | 5,127 | 650 | 125 |
| 10 | 10,254 | 1,300 | 250 |
| 15 | 15,381 | 1,950 | 375 |
Fixed tilt facing south
What a table yields at another tilt than the optimal 40° — for roofs and frames with a standard slope.
| Tilt | A year | Against the optimum |
|---|---|---|
| 40° (optimum) | 1,025 | — |
| 15° | 957 | −6.7% |
| 30° | 1,014 | −1.1% |
| 45° | 1,021 | −0.4% |
| 90° | 735 | −28.3% |
Snow and wind loads
Snow and wind loads for a site in Poland follow PN-EN 1991-1-3 (snow) and PN-EN 1991-1-4 (wind) with the Polish National Annex (NA). Solispec computes loads by the Ukrainian DBN V.1.2-2 only, so this page shows no snow or wind values for Poland: 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: PN-EN 1991-1-3 + NA, PN-EN 1991-1-4 + NA
- How these numbers are computed
Preliminary calculation: a design needs an engineer’s check.