Essential Energy says almost 1600 customers remain without power in Narromine, Warren and Dunedoo following the storms that smashed parts of the region yesterday (26 November).

As at 1:30pm, the company says 1079 customers are affected, along with 349 in Dunedoo and 111 in Warren.

An Essential Energy spokesperson said that crews have worked "around the clock" to restore electricity as quickly as possible.

"However, extensive damage from lightning and high winds across the Essential Energy network, combined with a fire ban, is affecting the speed at which customers’ power can be restored today across parts of the state," the spokesperson said.

The Rural Fire Service has a total fire ban in place for Warrumbungle Shire today, meaning fire authorities have to inspect powerlines for bushfire prevention before restoring power.

The Essential spokesperson said that helicopters are being used in some areas to patrol powerlines and speed up the restoration process.

A map of areas affected by power outages in the Narromine area as at about 2:45pm on 27 November. SOURCE: Essential Energy

They also said to prepare for potential extended outages.

As at 1:30pm today, about 8000 customers were without power across Essential's network in NSW. 

Customers can receive updates from Essential's outages page.

The State Emergency Service (SES) said they have responded to 358 in their Western Zone during the 24 hours up to 5am on Thursday 27 November.

They said entire roofs were blown off homes and sheds in Nevertire, with damage expected to take "several" days to clean up.

Residents in the Narromine and Come By Chance areas have reported property damage.