Skip to content

From country to city – SPS grows WA sustainability

When six farms took part in a trial of new stand-alone power technology, it started an exciting new journey for grid transformation that is reverberating from the country through to the city.  

When six stand-alone power systems (SPS)  were installed on properties in the Great Southern back in 2016, they lay the foundation for large scale deployment of renewable energy solutions for WA.

The SPS units were designed with solar power and battery storage set up, backed by a diesel generator.

The trial aimed to see how well the self-contained energy units would perform as an isolated and renewable energy source. The big questions were whether the renewable energy generated match the properties’ energy needs, and if SPS could improve power reliability for properties at the end of long power lines and subject to regular outages.

The results were outstanding.

SPS provided better quality, more renewable and more reliable power. The solar and batteries covered around 90% of the energy needs, even in power-hungry applications like shearing and welding sheds. And all without poles and wires, which reduced bushfire risk.

The SPS program is being quickly scaled up. More than 4000 units will be deployed across regional WA in the coming years.

And the benefits are reaching even further, from the country to the city.

Using SPS smarts to help metro customers

Seeing how well that energy technology could work on an isolated property opened new possibilities around the use of new energy technology in more populated areas.

Western Power continually looks to improve and future-proof the network.  The strategy to transform to a modular grid was born, incorporating more localised renewable energy generation to suit local conditions and better service customers.

Solar panels were already familiar on rooftops, but SPS was the first time we had trialled using solar energy as a closed circuit with a battery for customers - in essence, a mini-microgrid for a localised setting.

The performance of SPS provided valuable insights into the effectiveness of solar and battery technology, and how islanded solutions could fit within the larger SWIS grid operations.

These learnings supported the rollout of more renewable technology across the grid, including:

  • Community batteries across Perth and regional WA which store excess solar power for use in peak load periods
  • Virtual ower Plant (VPP) trial, Project Symphony where power operates in both a grid-connected and islanded way, offering local and renewable power solutions to the local community
  • Peer-to-peer energy sharing trials enabling customers to store solar in a battery and sell or share any excess they don’t need
  • Microgrids in Kalbarri and Perenjori which draw on local renewable energy sources and operate in grid-connected or islanded mode to keep power flowing continuously.

SPS cost savings for better infrastructure

Critically, the SPS program is helping to fund these changes, and more, in metro areas. By reducing the need to maintain poles and wires infrastructure in remote and isolated areas, we can save on cost and reinvest these savings back into new technologies to future proof the grid for all.

In creating the flexible and renewable modular grid of the future, we’re continuing to deploy more new technology, like community batteries and electric vehicle (EV) infrastructure. Plus, we’re strengthening and upgrading the grid, particularly in metro areas, so we can continue to connect  greater renewables to the network.

These significant infrastructure and technology upgrades and improvements will be funded by savings that SPS  provides.


  • What are the benefits of SPS?
  • Why SPS?
  • I’m in a metro area, how does SPS benefit me?
  • What are the benefits of SPS to me and my regional community
  • How do SPS help with bushfire safety?

In rural and remote areas, customers are serviced by powerlines that stretch over long distances. Using stand-alone power systems, (SPS), instead of poles and wires on suitable properties and locations has a number of benefits, including:

  • Improved power reliability: as power is generated on-site, customers can expect up to 90% less power outages.
  • Enabling lower emissions: up to 90% of the SPS electricity comes from solar panels and the stored solar energy in the battery, creating a more renewable energy source to power homes and businesses.
  • Suited to customer needs:SPS units come in different... Read more

With one of the largest and most isolated energy networks in the world, some WA customers rely on long stretches of powerlines for their power supply, and the poles and wires are costly to maintain.

As self-sufficient power units, SPS provide customers with locally generated renewable energy, delivering improved reliability.

SPS also makes powerlines redundant, creating significant savings in reduced maintenance and upkeep of poles and wires. Decommissioned poles and wires also reduce the bushfire risk.

Given the benefits of SPS, we are rolling out thousands of SPS units to serve customers... Read more

While stand-alone power systems (SPS) are installed in rural areas, they have significant flow-on benefits for customers in metropolitan and other built-up areas.

SPS provide significant cost savings as they reduce the need for poles and wires infrastructure and maintenance in remote areas. These savings are being reinvested back into the network, enabling the roll-out of more energy technology solutions like community batteries in Perth metro or renewable microgrids in regional towns.

With technologies like SPS, our network is transforming. It is becoming more modularwith localised energy solutions ... Read more

SPS benefit all WA customers, particularly those in regional WA.

SPS provide a new reliable energy solution for customers on rural properties serviced by long powerlines.

SPS provides customers with a more reliable power supply, generating enough renewable power to service the needs of farming businesses and homesteads. Over five years, the first properties to have SPS units installed, reduced their power outages up to 90%and had more reliable power at their shearing sheds, homesteads and farm operations resulting in better productivity for those businesses, and their operations became more... Read more

As a localised renewable technology solution, SPS provide self-sufficient power to rural properties, businesses and locations where they are installed.

They can support various energy needs, from shearing sheds to homesteads, welding and other farm operations.

This means that powerlines to properties that have a SPS will no longer be required and can be removed, significantly reducing the risk of bushfire.

This reduces bushfire risk as long powerlines exposed to dust, debris, lightning and other environmental factors, poses a fire risk. As poles are de-energised, and then removed (decommissioned), ... Read more

View all FAQs
Share this article