The lights will go out in nine small towns in the Peel Valley this weekend, as Essential Energy implements a major network maintenance project.
Residents in a number of towns including Bendemeer, Kootingal and Moonbi will be affected by the planned power outage on Sunday morning.
Operations Manager Northern Tablelands Mark Summers said the project will strengthen the electricity network and minimise the risk of equipment failure and unplanned power outages.
"The works were identified as part of a review of the network and include the replacement of cables, crossarms, insulators, powerline and power poles which are nearing end of life," he said.
The lights will go out in Bendemeer, Kootingal, Limbri, Moonbi, Tintinhull, Watsons Creek and parts of Daruka, Moore Creek, Nemingha and surrounding areas.
Mr Summers said the company has done its best to defer planned outages in light of the COVID-19 pandemic, but said some works are unavoidable.
"The maintenance work has been significant, and at times we have had every field-based employee in our Tamworth depot working on it to minimise the number and length of planned power outages affecting customers," he said.
"We appreciate that the planned power outages associated with these works may have caused inconvenience for some customers, however the works have been necessary to ensure a safe and reliable electricity network for customers in the Bendemeer, Kootingal, Moonbi and the surrounding areas."
The scheduled works are reliant on suitable weather conditions and may be postponed if the conditions are unfavourable or any unforeseen circumstances arise.
Affected residents and businesses have been notified of the planned outage, which will last from 1.30am to 10.30am on Sunday May 24.