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Stand-alone power systems

Stand-alone power systems

Stand-alone power systems (SPS) are an exciting new way we’re improving power reliability for regional customers. SPS works independently of the main electricity grid to store and deliver power to households and small businesses. It uses renewable energy such as solar photovoltaic (PV) panels, battery storage, inverter(s) and a backup diesel generator. We look after the installation of all SPS and all ongoing maintenance.

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

A stand-alone power system, or SPS, is a self-sufficient power unit. Energy is generated through solar panels providing power to the property and keeping the unit’s batteries charged for when the sun isn’t shining. A backup generator also kicks in when needed to keep energy flowing. The unit operates independently of the main electricity grid to store and deliver reliable power to a household or business.

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

Stand-alone power systems (SPS) provide significant benefits to customers, and to the operation of our network, particularly across the vast regions covering the Mid-West, Wheatbelt, South-West and Great Southern.

There are criteria used to assess and determine where Western Power will install SPS as an alternative to poles and wires infrastructure. 

Customers are identified and selected for an SPS based on the following:

  • single or small groups of customers located on the edge of the grid
  • network assets in the area that are due for replacement
  • the cost of replacing network assets compared with... Read more

We cover all costs for the SPS asset replacement program. This includes site visits and investigations, system installation and ongoing maintenance. Customers will continue to receive a bill from Synergy for the electricity they use. The cost per unit of electricity is the same as network-connected customers, so if your electricity usage stays the same, so will your bill.

Want to lower your power bill? Find easy and energy efficient changes you can make at

Please call our faults line on 13 13 51 and we’ll send our crew over to resolve the issue.

Stand-alone power systems (SPS) provide a more reliable, cost-effective and localised alternative to providing power through long powerlines that only connect small groups of customers.

SPS are self-sufficient power units that use solar panels and a battery, with a back-up generator , to provide reliable power for customers. By using SPS as an alternative power source, our customers get a more reliable and more renewable energy supply.

The poles and wires infrastructure will also become redundant, creating significant cost savings in maintenance and upgrades, particularly in remote areas.... Read more

The success of our SPS program has resulted in a strong interest from regional families and businesses who are keen to have an SPS installed on their property. Currently, only customers who live on properties that we’ve identified are eligible. We proactively contact customers who meet the eligibility criteria.

Given the range of customer load requirements, we’ve designed our fleet to be modular and flexible, to be able to be scaled up or down. SPS sizing is based on:

  • a detailed review of customer’s historical consumption data
  • a site inspection
  • the customer’s approved future plans.

Our front-end customer engagement, site visit and review of historical consumption data is critical in providing us with the information we need to get the SPS sizing right. The nature, timing and duration of the load being used would impact how frequently the backup generation would be used. The design of the system is in... Read more

Western Power will directly contact those customers who are eligible for an SPS as part of our asset replacement program.

While you cannot directly apply for an SPS, you are able to purchase one.  You can find out more information about it on our products and services page.

If you have any questions, please submit an enquiry through our ​customer experience team.

Alternately, you can call us on 13 10 87 (Monday to Friday, 8.30am - 5pm).

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

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

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

In the event of a fire or suspected fire within the SPS energy storage system, please follow the below steps:

  1. Do not attempt to fight the fire source from the SPS.
  2. Contact 000 and notify the relevant Authorities that there is a fire within the SPS enclosure and follow their directions.
  3. Stay away from the vicinity of the SPS fenced area and consider wind direction impact on smoke and fire movement.