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Single Axis Solar Tracking

:: Single Axis Tracking ::

Single-axis (one-axis image) solar trackers follow the sun from sunrise to sunset as it moves in the sky through the day from east to west, increase the energy captured by up to 25% more than fixed flat panels.  Residential Single-Axis Trackers (image) usually consist of one or two rows of solar panels, 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 stand up with two tilts a 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 are more suitable for larger latitudes (locations far from the equator), i.e. Southern Australia.

The advantages of single-axis trackers are that they are less complicated, and thus less expensive. As can be seen in the figures below, single axis trackers capture much of the benefit of solar tracking. In locations closer to the equator where the sun’s arc through the sky is less variable through the day and through the seasons, single-axis trackers are particularly effective.

Performance of Fixed Flat Panels v Solar Trackers in Australia

A solar tracker increases the harvesting 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 Tracking with Tilted Azimuth rotational is a little better as you can change the Latitude tilt to suit your location.

Single Axis Trackers & Equipment

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

Single-Axis Slew Bearing,

without Motor attached.


Residential Single-Axis Tracking (SAT).


Residential Single-Axis Tracking.

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

22 Panel, Tilted

Single-Axis Tracking Array.


Linked Long Span

Single-Axis Tracking Array.


Long span latitude Trackers.

Single Axis Slew Drive.   Single Axis Slew Drive.   Crated Solar Panels.

Linked long-span Single-Axis Tracking with up to 360 Solar Panel per Unit.


Commercial Single-Axis Tracking Array.


Palletised Solar Panels.

NB: Solar Arrays without Battery storage, will provide little return on investment using the 6~8 cents/kWh Retailer feed-in tariff, thus you have simply remained enslaved to the State Grid & electrical Retailers, by choosing to continue paying the retail price for power after sunset!

The purpose of Solar Tracking is to generate substantially more power than a standard fixed flat panel Solar array, improving generation increases independence, when solar is used with batteries a Reposit Box can earn you GridCredits, the $1.00kWh feed-in Credit/revenue offered when used in conjunction with a Reposit Box, only when using Battery storage, Batteries will eventually get fully charged from time to time, especially if your power usage reduces or you choose to generator more power via other methods like Aqua or Wind, Solar trackers are the best option.

From 3.5~10kWh is the maximum feed-in Tariff capacity limit in most states, fitting a solar tracker system without Batteries, only allows you to better minimise your power bills, by usually exporting over 60~80% of your daytime power into the State Grid for little return, many people simply fail to understand and miss the point of becoming Independent, buy simply generating a small income where no other means are available.

For a small 1.3kWh installation the up front cost with a tracker is higher, and the payback period is a little longer.  In reality, investing the same amount on additional solar cells would yield higher generation volume, with little financial return/income to the system owner without battery storage.   We only recommend purchasing a multi voltage Hybrid inverter, and 350W solar panels, don't be fooled into purchasing 200~270W solar panels, as they harvest 30% less power for the next 25 years and more panels are required, creating a larger footprint to produce the same power.

An over size inverter will let you control every aspect of your future power production and distribution, the smart hybrid-inverters are designed to handle multiple input voltage from several power sources, such as Solar, Wind, Aqua, Battery and even Generator input, ours generators all come with built in Battery charge management, that once programmed, can automatically start or shut-down as programmed.

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