Spain: solar plant site data
Solar power plant in San Sebastián, Spain: yield, tilt angle and row spacing
San Sebastián: 1,177 kWh per kWp a year at the optimal tilt of 37°, 3° west of south (PVGIS). 27.1% below the median of the main cities of Spain (1,615). #143 of 147 main cities of Spain by yield. For comparison, Kyiv: 1,114 kWh/kWp — 5.7% more here.
San Sebastián is in the province of Gipuzkoa, Basque Country. Population 185,357 (GeoNames). 17 m above sea level. 61 km away: Pamplona, the nearest bigger city, 1,404 kWh/kWp — 16.1% less here. 7.88 m between rows, pitch 11.70 m, GCR 0.41 (latitude 43.3°).
- Yield of 1 kWp
- 1,177kWh/year
- Tilt
- 37°3° west of south
- 10 kW
- 11,773kWh/year
- Row pitch
- 11.70m · GCR 0.41
- Rank in the country
- 143of 147 cities
Ground frame designer
A ground frame for a solar plant: San Sebastián
Latitude 43.3°: the tilt and the row pitch follow it. Enter the snow and wind for Spain in the designer, by the national annex to the Eurocode.
- No sign-up
- Snow and wind check
- Drawings and estimate
Yield by month
August: 124 kWh/kWp, January: 63 — 2.0 times less.
January: 63 against the median of 109 for the main cities of Spain, 42.2% less.
| kWp | A year | August | January |
|---|---|---|---|
| 5 | 5,887 | 620 | 315 |
| 10 | 11,773 | 1,240 | 630 |
| 15 | 17,660 | 1,860 | 945 |
Fixed tilt facing south
What a table yields at another tilt than the optimal 37° — for roofs and frames with a standard slope.
| Tilt | A year | Against the optimum |
|---|---|---|
| 37° (optimum) | 1,177 | — |
| 15° | 1,114 | −5.4% |
| 30° | 1,171 | −0.6% |
| 45° | 1,169 | −0.7% |
| 90° | 808 | −31.4% |
Snow and wind loads
Snow and wind loads for a site in Spain follow CTE DB SE-AE (Spain’s Código Técnico de la Edificación) and, where the Eurocodes are applied, UNE-EN 1991-1-3 and UNE-EN 1991-1-4 with the Spanish National Annex. Solispec computes loads by the Ukrainian DBN V.1.2-2 only, so this page shows no snow or wind values for Spain: 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: CTE DB SE-AE
- How these numbers are computed
Preliminary calculation: a design needs an engineer’s check.