The Energy Networks Association has described the storm damage in the North Wales as "nothing less than devastation for large parts of that area."
"The result is that we still have over 17,000 people centred in that area off power," said Tony Glover, from the trade body.
"The debris that flew around in North Wales were quite incredible and the impact it had on the electricity networks has resulted in a level of devastation that I don't think has ever been seen in the area, certainly not for decades," he added.
Here's how town planning can embrace water, rather than fight against it.
The residents of one street in Egham in Surrey have described how they have coped with the devastating impact of the floods.
Somerset Levels have been one of the worst-affected areas during the floods and today's aerial images reveal the situation remains bleak.