In November 2025, we will be conducting a series of tests on our electricity network to support the uptake of rooftop solar, batteries and other clean energy technologies.
Growth in rooftop solar systems and other new technologies creates challenges for networks as they can raise voltage levels across the system. Managing voltage on our networks is important to support more solar, reduce carbon emissions and keep power affordable for our customers.
Tests like this help us to define operational settings on our network to ensure power remains safe and reliable as more renewable energy is connected to the networks.
We will be conducting three voltage tests across the networks during November 2025. We’ve scheduled these tests to occur on:
CitiPower
Powercor
Testing will be conducted between 10am and 2pm on these days and will run for up to 60 minutes.
We will not be turning your power off as part of this testing, and you’re unlikely to notice any change to your power supply.
Due to weather or other events, we may need to reschedule these dates. If this occurs, we will publish the new dates.
In rare cases, some customers may experience their rooftop solar system or other sensitive equipment tripping. If you experience any irregularities to your supply that result in financial loss, please submit a claim.
If you have any questions, please contact us on Powercor: 13 22 06 or CitiPower: 1300 301 101.
Voltage is the technical term for the pressure that pushes electricity through our powerlines. Voltage is measured by volts and higher voltages cause more electricity to flow.
Networks like CitiPower and Powercor are required to deliver electricity to homes and businesses within a range of 216 and 253 volts. We use a system to manage voltage fluctuations on the networks in real time.
If the voltage is too high, customers may use more power than necessary, and it can potentially damage some appliances. If voltage is too low, customers may experience flickering lights and poor power quality.
Networks like CitiPower and Powercor are required to deliver electricity to homes and businesses within a range of 216 and 253 volts.
If the voltage is too high, customers may use more power than necessary, and it can potentially damage some appliances. If voltage is too low, customers may experience flickering lights and generally poor power quality.
Growth in rooftop solar systems and other distributed energy resources can create challenges for networks as they can push up voltage levels in the system.
We now use a system, known as our Dynamic Voltage Management System, to manage voltage levels in real time.
We will be conducting this test to make sure our system is working accurately and effectively. To do this, we will be briefly increasing voltages at our zone substations so we can measure the voltage levels of every device and meter connected to the local network.
The test is unlikely to impact your power supply.
