Up to 10,000 properties in Pendle experienced power outages earlier today.
Electricity North West said 9,111 customers in total were affected, 4,364 customers of those were had power restored in three minutes and another 4,467 within an hour.
A spokesman confirmed that at around 2pm there were 280 customers without power and engineers were working to get them back on as soon as possible.
Homes and businesses in Barrowford, Colne and Nelson reported issues with power going on and off at approximately 12-30pm.
There had been a report that a power surge caused a manhole cover to explode in Gisburn Road in Barrowford close to Broden Lloyd estate agents.
Police temporarily closed a section of Gisburn Road in Barrowford and a diversion was set up but the road is now reopen.
A spokesman for Electricity North West, said: “An underground cable fault caused the loss of supply to 9,111 customers in Nelson at 12-29pm this afternoon.
“Our engineers quickly arrived on site to ensure the area was safe and they will be conducting an investigation into the cause of the fault.
“Power was restored to the majority of customers within the hour and engineers are working to restore the remaining 280 as quickly as possible.
“The fault, which occurred on a piece of equipment underneath the pavement, caused external damage on site, but we would like to assure customers that incidents of this nature are extremely rare and we regularly maintain our underground network to ensure customers across the North West receive a reliable supply of electricity.
“If customers would like any further information they can contact us on 0800 195 4141 or follow us @ElectricityNW.”