UPDATE: Power to all customers has been restored.
PADUCAH -- Many Paducah Power customers are waking up in the dark.
Over 6,000 customers are without power.
Paducah Power says it is because of an issue with a substation.
Crews are working to fix the issue.
There is no estimated time for when power is expected to be restored.
You can see the current power outage map by clicking here.