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Single Axis Solar Trackers

:: Single Axis Trackers (SAT) ::

What is a Single Axis solar Tracker ?

All Single Axis-solar Tracking Racking, track the sun on One axis only, being East to West!

There are several types that follow the sun from Sunrise to Sunset as it moves through the sky from east to west.

  1. Tilted Single-Axis Racking (Azimuth Rotation) looks like a DAT unit, but only rotates in a circular motion & Generates the most energy.
  2. Horizontal beam with Tilted Panels Racking is the Racking that generates a little less energy.
  3. Horizontal beam with Flat Panel Racking, is the common racking where the panels are flat to the ground & rotate vertically.
  4. Commercial Long-span or Linked Long-span Single-Axis Trackers consist of hundreds of panels controlled by one mechanism that rotates all the panels uniformly from East to West on a single axis.

The single-axis can be oriented so that the cells are fixed & tilt to the Polar axis or lie flat called a Horizontal axis).

  • Horizontal axis are more suitable for small latitudes (locations in the tropics and closer to the equator), i.e. most Northern Australia.
  • Polar axis (Azimuth) are more suitable for larger latitudes (further south of the equator), i.e. Victoria or Southern Australia.

The advantages of ground mounted Single Axis-solar Trackers (SAT) is, they are less complicated with less components used than Fixed Tilted ground mounted Racking, thus quicker & less expensive to install. The main difference is the long term energy generated, it is simply better than any Fixed Tilted Racking as can be seen in this graph, Solar trackers capture much more solar energy, in locations closer to the equator where the sun’s arc through the sky is less variable through the day and the seasons, single-axis trackers are particularly effective, but no where as good a Dual Axis-solar Tracking.

Performance of Fixed Flat Panels v Solar Trackers in Australia

All solar trackers increases the generated energy/performance of solar PV panels in the shoulder periods of the day, where a static fixed mount panel would only receive obscured sun exposure. This can be seen in the graphs of side by side solar tracking panels & static fixed pane.

Using Single Axis Tilted Racking with Azimuth rotational is considered the best all round, and even better if you can change the Tilt angle to suit the Latitude location several times a year, however it would be smarter to Install Dual Axis Tracking (DAT) in the first place!

Single Axis Tracking Configurations

Single Axis Movements. Single Axis Movements. Single Axis Slew Drive.

Single-Axis Slew Bearing,

without Motor.


Residential 4 Panel Single Axis Tracking Unit.


Small solar farm Horizontal flat span East/West Tracking.

Single Axis Slew Drive.   Single Axis Slew Drive.   Single Axis Slew Drive.

Horizontal rotation Long span, East/West Single-Axis Tracking Racking.


Horizontal rotation Tilted 96 panel long span, East/West Single-Axis Tracking.


Long span, East/West Single-Axis Tracking Array.

Single Axis Slew Drive.   Single Axis Slew Drive.   Single Axis Slew Drive.

16 Panel, Tilted

Single-Axis Tracking Array.


Korean Single-Axis Tracking Array.


360 panel long-span Single-Axis Tracking racking.

Crated DAT Kits.   CratedDAT Kits.   Crated Solar Panels.

Crated DAT Kits.


Crated DAT Kits.


Palletised Solar Panels.

NB: Solar Arrays without Battery storage, will provide little return on investment using the 6~10 cents/kWh Retailer feed-in tariff, thus you will simply remained enslaved to the deceptively named electrical Retailers, by choosing to continue paying the retail price for power after sunset!

The purpose of Solar Tracking is to generate/harvest substantially more energy than common standard fixed flat or tilted panel array, by improving generation it also increases independence when solar is used with battery storage, it is inefficient sending your energy for the low feed-in tarrif until your Battery storage is full, then if your power usage reduces &/or you are generating even more power via other methods like Aqua, Wind, or even Generating Green energy using Bio-Gas, then it is obviously that can easily be produced in your back yard via a Bio-Digester.

In early 2019 a leading Australian company Power Ledger started offer a Secure Direct Payment system between the Energy Producer (inc. farms with any green energy & storage) directly to Consumer, this offers a seamless Payment system that cuts out the middle man, the "Energy Retailer", this exciting business works for Remote locations & Urban people to take-up Peer-to-Peer (P2P) Energy Trading.  read more...


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