Location data · Baden-Württemberg
Sun hours in Backnang
How sunny is Backnang? Over a year the sun delivers 1,355 kilowatt-hours onto every square metre here — in June roughly 4 times as much per day as in December. “Sun hours” has two meanings: the weather report counts how long the sun shines. For solar power what matters is how much energy arrives — and that is what this page shows, as peak sun hours (hours of full sun power).
For solar planning this means: an optimally tilted, south-facing array (35°) harvests an annual average of 3.71 peak sun hours per day in Backnang. In 9 out of 10 years at least 1,266 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.71 kWh/m²/d
- P90 annual total
- 1,266 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 13.0°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.36 | 2.51 | 3.73 | 4.90 | 5.02 | 5.63 | 5.61 | 5.11 | 4.48 | 3.04 | 1.81 | 1.29 |
| P90 | 1.02 | 1.74 | 2.69 | 3.87 | 4.15 | 4.93 | 4.92 | 4.37 | 3.71 | 2.37 | 1.36 | 0.83 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Backnang. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Backnang
The annual optimum for Backnang is 35° south; anything between 23° and 50° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 14.7 % versus the optimum. Adjusting twice a year would add 2.7 % here, monthly adjustment 3.6 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Backnang?
A vertical south-facing railing in Backnang harvests 952 kWh/m² per year — 70 % of what an optimally tilted 35° panel yields at the same spot. December softens the penalty: with the low winter sun, the vertical plane reaches 103 % of the 35° December value, computed from the same hourly data with its own plane transposition. Open the balcony solar calculator with these coordinates →
Neighbouring places compared
- Schorndorf3.88 kWh/m²/d17 km
- Ludwigsburg3.87 kWh/m²/d19 km
- Bietigheim-Bissingen3.86 kWh/m²/d23 km