Location data · Baden-Württemberg
Sun hours in Heidenheim an der Brenz
How sunny is Heidenheim an der Brenz? Over a year the sun delivers 1,359 kilowatt-hours onto every square metre here — in June roughly 5 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 3.72 peak sun hours per day in Heidenheim an der Brenz. In 9 out of 10 years at least 1,269 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.72 kWh/m²/d
- P90 annual total
- 1,269 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 10.3°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.35 | 2.57 | 3.89 | 4.97 | 5.12 | 5.63 | 5.66 | 5.16 | 4.44 | 2.95 | 1.65 | 1.22 |
| P90 | 1.00 | 1.90 | 2.90 | 3.91 | 4.32 | 4.88 | 4.94 | 4.43 | 3.69 | 2.38 | 1.45 | 0.99 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Heidenheim an der Brenz. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Heidenheim an der Brenz
The annual optimum for Heidenheim an der Brenz is 35° south; anything between 22° and 48° counts as equivalent (below 2% difference). For winter operation (off-grid) 60° is optimal, for summer use 20°. Flat-laid modules lose 13.0 % versus the optimum. Adjusting twice a year would add 2.3 % here, monthly adjustment 3.1 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Heidenheim an der Brenz?
A vertical south-facing railing in Heidenheim an der Brenz harvests 939 kWh/m² per year — 69 % 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 101 % 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
- Giengen an der Brenz3.82 kWh/m²/d9 km
- Aalen3.71 kWh/m²/d18 km
- Geislingen an der Steige3.82 kWh/m²/d25 km