CH-POA300 -- Hourly Plane-of-Array Solar Irradiance at High Resolution for Switzerland

**CH-POA300** is a dataset of hourly solar irradiance maps projected onto tilted surfaces (analogous to monofacial solar panels).
- **Spatial resolution:** 300 m
- **Coverage:** Switzerland
Two temporal extents are available, depending on the number of surface orientations (azimuth–tilt combinations):
1. Long-term
- **Period:** 2004–2020
- **Orientations:**
- Azimuth: 180° (South)
- Tilts: 0°, 35°, 60°, 90°
2. Typical year
- **Period:** 2016
- **Orientations:**
- Azimuths: 0° (North), 90° (East), 135°, 180° (South), 225°, 270° (West)
- Tilts: 0°, 3°, 8°, 15°, 25°, 35°, 45°, 60°, 80°, 90°
Notes
- Azimuth angles: 0° = North, 90° = East, 180° = South, 270° = West
- Tilt angles: 0° = horizontal, 90° = vertical
Additional data
- Seasonal and annual statistics derived from the maps are included.
- Methodology and quality assessment are documented in *CH-POA300-v-specs.pdf*.