Solar Incidence

pvgis can calculate the solar incidence angle for a givel location and moment in time.

pvgis position incidence 8.627626 45.812233 180 45 '2020-01-01 15:00:00' -v

       Solar Position Overview       

  Time                  ⭸ Incidence  
 ─────────────────────────────────── 
  2020-01-01 15:00:00   0.985        

╭────────────────────────────────────────────────────────────────╮              
│ ⏳ Start Time     ⏱ Frequency       ⌛ End Time       Timezone │              
│ 2020-01-01 15:00  Single timestamp  2020-01-01 15:00  UTC      │              
╰────────────────────────────────────────────────────────────────╯              
╭──────────────────────────────────────────────────────────────────────────────╮
│ Position  longitude, latitude = 0.151, 0.8, Unitless                         │
│ Algorithms  Timing : NOAA, Zone : UTC, Positioning : NA, Incidence : Iqbal   │
│ Definitions  Azimuth origin : North, Incidence angle :                       │
│ Sun-Vector-to-Surface-Normal                                                 │
╰────────────────────────────────────────────────────────────────── Reference ─╯
╭────────────────╮                                                              
│  ⭸  Incidence  │                                                              
│                │                                                              
│                │                                                              
╰─────── Legend ─╯                                                              

Also get the output in degrees (°) using:

pvgis position incidence \
8.627626 45.812233 180 45 \
'2020-01-01 15:00:00' \
-aou degrees \
-v

       Solar Position Overview       

  Time                  ⭸ Incidence  
 ─────────────────────────────────── 
  2020-01-01 15:00:00   56.426       

╭────────────────────────────────────────────────────────────────╮              
│ ⏳ Start Time     ⏱ Frequency       ⌛ End Time       Timezone │              
│ 2020-01-01 15:00  Single timestamp  2020-01-01 15:00  UTC      │              
╰────────────────────────────────────────────────────────────────╯              
╭──────────────────────────────────────────────────────────────────────────────╮
│ Position  longitude, latitude = 8.628, 45.812, Unitless                      │
│ Algorithms  Timing : NOAA, Zone : UTC, Positioning : NA, Incidence : Iqbal   │
│ Definitions  Azimuth origin : North, Incidence angle :                       │
│ Sun-Vector-to-Surface-Normal                                                 │
╰────────────────────────────────────────────────────────────────── Reference ─╯
╭────────────────╮                                                              
│  ⭸  Incidence  │                                                              
│                │                                                              
│                │                                                              
╰─────── Legend ─╯                                                              

And get a fingerprint using the --fingerprint option:

pvgis position incidence \
8.627626 45.812233 180 45 \
'2020-01-01 15:00:00' \
-aou degrees \
--fingerprint \
-v

       Solar Position Overview       

  Time                  ⭸ Incidence  
 ─────────────────────────────────── 
  2020-01-01 15:00:00   56.426       

╭────────────────────────────────────────────────────────────────╮              
│ ⏳ Start Time     ⏱ Frequency       ⌛ End Time       Timezone │              
│ 2020-01-01 15:00  Single timestamp  2020-01-01 15:00  UTC      │              
╰────────────────────────────────────────────────────────────────╯              
╭──────────────────────────────────────────────────────────────────────────────╮
│ Position  longitude, latitude = 8.628, 45.812, Unitless                      │
│ Algorithms  Timing : NOAA, Zone : UTC, Positioning : NA, Incidence : Iqbal   │
│ Definitions  Azimuth origin : North, Incidence angle :                       │
│ Sun-Vector-to-Surface-Normal                                                 │
╰────────────────────────────────────────────────────────────────── Reference ─╯
╭────────────────╮                                                              
│  ⭸  Incidence  │                                                              
│                │                                                              
│                │                                                              
╰─────── Legend ─╯                                                              
╭────────────────────────────────────────────────────────────────────╮
│  c35675b92413674022b80113cd71929210963451e575632001772a2cbb7e1ffd  │
╰────────────────────────────────────────────────────── Fingerprint ─╯