Western Power says it is doing all it can to restore electricity to homes and businesses blacked out in a storm.
Just under 7,000 customers have been without power since a storm on Sunday night.
The worst affected town is Manjimup with 3,000 customers affected.
The remainder of the towns are Augusta, Pemberton, Boyup Brook and Nannup.
A Western Power spokesman says generators were taken to Manjimup yesterday to restore power to essential services.
He says generators are being used to power essential services including two aged-care homes, a waste water plant, a supermarket and a service station.
Sixteen crews from Perth have been sent to the south-west to help.
Customers without power for more than 12 hours can lodge a claim for compensation on Western Power's website.
Alternatively, they can ring 131087.
© ABC 2013
12:52 EST A thick northwest cloudband has brought the best rain in over a year to parts of inland South Australia.