Residential power quality

We are obliged under the Electricity Distribution Code to maintain the network voltage within allowable ranges. There are allowable variations within this range. For more information visit out network reliability page.

Sometimes, these variations can cause voltage swells (surges) and sags (brownouts) which may affect your supply experience.

Power swells and sags are normal and allowable variation within the voltage standards approved by the Essential Services Commission Victoria. Surged and sags can affect your power supply experience.

There are some common reasons why your power quality might not be optimal. Some of these reasons you can resolve yourself or with the assistance of a registered electrical contractor. Browse the list below and if none apply or help to resolve your issue, proceed to the 'raising a power quality issue' section.

If your power quality issue cannot be resolved via the guidance in the common issues section, contact us [list contact options, link to Contact Us page, or provide online form] and we'll investigate.

Information to provide

• Summary of the power quality issue - what is happening and for how long
• Action you have taken to resolve the common power issues
• Details of your solar system (if you have one)
• Your address and NMI
• Your contact information

Investigation process

• Once your issue has been reported, our Supply Quality team will undertake an investigation to find out what's causing the issue.
  
• The investigating officer will keep you up to date via email, or via letter if an email address isn't provided.
• The investigation can take up to 20 business days to complete, and then up to 8 weeks for the issue to be resolved.
• If there are been a voltage variation we will support you to make a claim through our claims process.