Publication

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

2025

Abstract

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):

Long-term Period: 2004–2020 Orientations: Azimuth: 180° (South) Tilts: 0°, 35°, 60°, 90°
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.

Official source

https://infoscience.epfl.ch/entities/publication/a0fa7f0d-613a-4b7d-8915-a7b1a6010d3f

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2025

Abstract

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):

Long-term Period: 2004–2020 Orientations: Azimuth: 180° (South) Tilts: 0°, 35°, 60°, 90°
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.

Official source

https://infoscience.epfl.ch/entities/publication/a0fa7f0d-613a-4b7d-8915-a7b1a6010d3f

About this result

Related concepts (31)

Azimuth

An azimuth (ˈæzəməθ; from as-sumūt) is the angular measurement in a spherical coordinate system which represents the horizontal angle from a cardinal direction, most commonly north. Mathematically, the relative position vector from an observer (origin) to a point of interest is projected perpendicularly onto a reference plane (the horizontal plane); the angle between the projected vector and a reference vector on the reference plane is called the azimuth.

Solar azimuth angle

The solar azimuth angle is the azimuth (horizontal angle with respect to north) of the Sun's position. This horizontal coordinate defines the Sun's relative direction along the local horizon, whereas the solar zenith angle (or its complementary angle solar elevation) defines the Sun's apparent altitude. There are several conventions for the solar azimuth; however, it is traditionally defined as the angle between a line due south and the shadow cast by a vertical rod on Earth.

West

West is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sun sets on the Earth. The word "west" is a Germanic word passed into some Romance languages (ouest in French, oest in Catalan, ovest in Italian, oeste in Spanish and Portuguese). As in other languages, the word formation stems from the fact that west is the direction of the setting sun in the evening: 'west' derives from the Indo-European root *wes reduced from *wes-pero 'evening, night', cognate with Ancient Greek ἕσπερος hesperos 'evening; evening star; western' and Latin vesper 'evening; west'.

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

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