Engineers are working to restore power to 3,000 homes in Northumberland and County Durham after storms flooded substations and lighting hit power lines.
Northern Powergrid, which supplies the region's electricity, says at one stage yesterday afternoon 50,000 properties suffered power cuts. Traffic congestion due to flooding hampered attempts to reconnect the supply.
Consett and Stanhope in County Durham, and Alnwick in Northumberland remain the worst affected areas. Engineers hope to have electricity restored to all homes by the end of Friday.
Lightning strikes the Tyne Bridge as thunderstorms gripped the North East. We talk to the man who captured it on his phone
It's been a day of clearing up, and counting the cost. Twenty four hours ago, we were in the grip of flash floods.
Frances Read is in Lanchester, one of the areas worst affected by the storms