NIE say their emergency teams worked throughout the night to restore electricity to around 20,000 homes and businesses across Northern Ireland.
Around 900 properties are still without power this morning following severe winds overnight but NIE Networks predicts this number could rise as the morning progresses.
Storm Frank brought trees, branches and other flying debris down on power lines and poles which now need to be repaired or replaced. The strong winds and rain also hampered repair efforts.
At present the worst affected areas are: around Dromara and Castlewelllen, Limavady Portglenone and Cloughmills.
The worst damage to the electricity network happened at around 9pm last night with major faults in Fermanagh (Lisnaskea, Kesh, Five Mile Town and Ballinamallard) and between Limavady and Garvagh. The majority of these customers have now had electricity supplies restored.
NIE Networks’ local incident centres opened again at 6am this morning to continue to assess and repair the damage.
Sara McClintock, communications manager at NIE Networks said; “Our teams have worked hard throughout the night in difficult conditions to restore power to homes. We hope that many people who went to bed without electricity last night will be waking up to find it is back on.
“However, if homeowners or businesses are without electricity we would ask them to let us know as soon as possible either by phone on 03457 643643 or online at nienetworks.co.uk. You can also follow us on Twitter @NIElectricity for additional updates.”