Thousands of people are without electricity as homes and businesses across Liverpool were plunged into darkness.
A mass blackout hit some of the most populated areas shortly before 1am on Saturday with many reporting the incident to the emergency services.
According to Merseyside Fire and Rescue, some of the postcodes affected are L1, L3, L5, L6,L7 & L9.
Read more: People evacuated as sink hole causes road collapse and flooding
These postcodes include the city centre, Bootle, Everton, Norris Green, Anfield and Kensington.
In a statement, a spokesperson for the fire service said: "MFRS are receiving reports of a power failure affecting a significant number of homes & businesses in the following areas of Liverpool.
"L1, L3, L5, L6,L7 & L9. Utilities companies are aware and are responding to deal with the issue."
In a later tweet, the service also said it was not yet clear whether the blackout was a result of earlier flooding in Old Swan caused by a massive sink hole on Green Lane.
People were evacuated from their homes after a section of Green Lane c aved in at around 10.30pm on Friday.
Emergency services were called to the junction with Prescot Road to deal with the incident where a large cordon has been put in place.
Three fire engines and multiple police vehicles are in the area and people are being asked to avoid the roads affected.
On Facebook many have been posting pictures and video of the flooding while others are sharing how they were evacuated from their properties by fire crews.
It is believed that the sink hole was caused by a ruptured water main under the road but this has not yet been confirmed.
In a statement, a spokesperson for Merseyside Fire and Rescue confirmed they were in attendance.
The fire service said: "Fire crews have been called to an incident which has resulted in a sinkhole approximately 15 x 20 feet in Green Lane, Old Swan, Liverpool.
"Crews were alerted at 10.32pm and on scene at 10.36pm. 3 fire engines are now in attendance.
"The incident has generated running water which is affecting the junction of Prescot Road 500 metres west and Green Lane 100 metres north.
"Road closures are in place and several properties in the area are being affected.
"The suspected cause is a ruptured water main but this is not yet confirmed.
"Crews are working to restrict the flow of water and utilities companies are in attendance.
