About 55,000 homes around Lancaster which lost power due to flooding have had their supplies restored.
Engineers from Electricity North West have restored power to all but 300 customers in Lancaster, Morecambe and the surrounding area.
Floodwater breached flood defences at Lancaster’s main substation just before 11pm on Saturday, cutting power to 55,000 properties.
Engineers have been working in the substation since 11am on Sunday when it was safe to enter and start repairing damage caused by the water.
Mark Williamson, operations director for Electricity North West, said: “Our engineers have done an incredible job and worked around the clock to restore supplies to almost 55,000 customers in Lancaster.
“All customers have been restored from our main substation, but 300 customers in the surrounding area are still without power due to localised flooding.
“While we still have a significant amount of work to do to fully repair the substation we are still on site to repair the damage.
“I’d like to thank customers for their understanding and their goodwill to our teams during what continues to be an enormously challenging time for everyone involved.
“We are immensely proud of the area and the people we serve in the way they have dealt with this incident.”
Engineers will remain on site at the substation to continue additional repair and restoration work to equipment affected by the floodwater until all supplies are restored.
2,657 properties remain without power in Cumbria, where floodwater is restricting access for Electricity North West teams.