UPDATE 4PM
Power has been restored to most homes in Engadine and Woronora Heights after a power pole came down.
Crews are working to get power back to the final 120 homes.
EARLIER
Emergency crews are working to restore power back to about 1,600 customers in Engadine and Woronora Heights.
Ausgrid said power is expected to be back on by 3.30pm.
It's believed a broken power pole is the reason behind the outage.