Work will start next week to help improve the reliability of the power supply to the Wollombi Valley.
Ausgrid crews will be upgrading the powerline that supplies parts of Wollombi, Laguna and Bucketty.
Equipment attached to the powerline, called regulators, will be replaced to help ensure a safe and reliable electricity supply. The 11,000 volt powerline runs from the zone substation in Paxton.
Ausgrid Hunter and Central Coast regional manager Craig Hersant said the work was vital for the region.
"We know the supply to the area has had some voltage issues. These regulators are about to reach the end of their serviceable life and now is the time to replace them," Mr Hersant said.
Three regulators will be replaced. The new equipment includes airbreak switches, regulators and intellirupters, which will help improve the reliability of the local power supply.
Crews will also be installing six new power poles along the powerline route and completing essential maintenance tasks.
To do this work safely, crews will need to interrupt the power supply.
The project is extensive and is scheduled to take three days, spread out over coming weeks.
The first day of work is scheduled for November 10 and power is expected to be interrupted between 8am and 4pm, when crews are installing the new poles.
The further two days are scheduled for November 24 and December 14, weather permitting. Affected customers will be notified.
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