ARTC 20kW Solar Power System Case Study

Case Study CS0015 - ARTC 20kW Solar Power System Commercial Off-Grid


In June 2011, MPower, project managed and installed a 20kW solar power system on a remote off grid site for the Australian Rail Track Corporation (ARTC). The entire railway site camp, located 200km east of Kalgoorlie on the Trans Australia Rail Line at Zanthus rail sliding, is running on solar power.

Prior to the installation of the new system, the site was powered 24/7 by a 50kVA diesel generator, consuming 200 litres of diesel per day. Solar power is now expected to contribute up to 80% of the site’s energy needs with the diesel generator remaining as a back-up power source in times of peak demand or for battery charge on days of poor sunlight.

The site installation took 4 weeks with 25 tonnes of equipment installed and 15m³ of concrete for solar array footings. With a project value of $450,000 (50% contribution from Renewable Remote Power Generation Program rebate), the estimated payback time is 3-4 years.

Project Description

Category: Commercial Solar Power Systems
Client: Australian Rail Track Corporation
System Location: Zanthus, Western Australia
Supplier/Designer/Installer: MPower
Completion: June 2011


System Features

  • 108 x 190W mono-crystalline Suntech Solar Panels
  • 144 x Hoppecke 1250a.h gel batteries
  • 6 x SMA Sunny Island Inverters (5kW,48V) and a SMA Multi-cluster box
  • The solar array is AC coupled using 18 x SMA SB1100 grid connect inverters
  • A shipping container was used for an equipment hut with an independent sun-shade structure


Providing practical, dependable solutions is MPower’s promise. With an extraordinary profile of capabilities, MPower is sure to find a solution. To find out more about MPower contact us.

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