Rotation Angle for the Optimum Tracking of One-Axis Trackers

William Marion

Research output: NRELTechnical Report


An equation for the rotation angle for optimum tracking of one-axis trackers is derived along with equations giving the relationships between the rotation angle and the surface tilt and azimuth angles. These equations are useful for improved modeling of the solar radiation available to a collector with tracking constraints and for determining the appropriate motor revolutions for optimum tracking
Original languageAmerican English
Number of pages15
StatePublished - 2013

NREL Publication Number

  • NREL/TP-6A20-58891


  • azimuth
  • equations
  • incidence angle
  • optimum tracking
  • rotation angle
  • solar radiation
  • tilt


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