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Parameter name in FTP APIRequiredValue typeValue unitDefault valueValue RangeDescriptionWS API Time Series equivalent (XPath)

lat

Yes

floatdegree -90, 90Latitude/dataDeliveryRequest/site/@lat
lngYesfloatdegree -180, 180Longitude/dataDeliveryRequest/site/@lat
altYesfloatmeters -500, 8848Altitude above sea level/dataDeliveryRequest/site/terrain/@elevation
groundAlbedoNofloat-0.120, 1

Estimated annual value of reflection coefficient expressing amount of ground-reflected radiation, value ranges from zero (no reflection, black surface) to 1 (perfect reflection)

 
geometryNostring-FixedOneAngle
  • FixedOneAngle
  • OneAxisVertical
  • OneAxisInclined
  • OneAxisHorizontalNS
  • OneAxisHorizontalEW
  • TwoAxisAstronomical

Type of surface absorbing solar energy. It can be fixed or sun-tracking. It is assumed this typically is a PV module mounted on some construction.

FixedOneAngle

OneAxisVertical

OneAxisInclined

OneAxisHorizontalNS

OneAxisHorizontalEW

TwoAxisAstronomical

  • fixed surface described by azimuth and tilt
  • single vertical axis tracking
  • tracks sun azimuth
  • tilted surface
  • rotation limits possible
  • back-tracking possible
  • relative column spacing
  • self-shading calculation not implemented
  • single inclined axis tracking
  • tracks sun azimuth
  • tilted surface
  • rotation limits possible
  • back-tracking possible
  • relative column spacing
  • self-shading calculation possible
  • single horizontal axis tracking
  • tracks sun azimuth
  • rotation limits possible
  • back-tracking possible
  • relative column spacing
  • self-shading calculation possible
  • single horizontal axis tracking
  • tracks sun elevation
  • rotation limits possible
  • back-tracking possible
  • relative row spacing
  • self-shading calculation not implemented
  • two axis tracking
  • tracks sun elevation and azimuth
  • rotation limits possible for both axis
  • back-tracking possible
  • relative column spacing
  • self-shading calculation not implemented

/dataDeliveryRequest/site/geometry/@type

In case of PVSpot Web ServiceWS API Time Series, trackers are theoretical, without rotation limits and backtracking.

tilt

Nofloatdegree00, 90 /dataDeliveryRequest/site/geometry/@tilt
azimuthNofloatdegree0, resp. 1800, 360True north-based azimuth (0=North, 90=East, 180=South, etc.). When this parameter is missing, defaults are following: if "lat" is less than 0 (southern hemisphere), azimuth defaults to 0, otherwise azimuth is 180 (northern hemisphere)./dataDeliveryRequest/site/geometry/@azimuth

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