Scottish Power say that more than 500 homes are without power in the Holywell and Llangollen areas of north east Wales. They say engineers are trying to reconnect them but are struggling to due to closed roads.
The company says there are a number of other 'pockets' of disruption.
They hope that power can be reconnected by the end of the day.
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Well a fabulous day today has ended on a spectacularly soggy note for some! Heavy rain, hail and thunder will work northwards overnight!
The Talyllyn runs from Tywyn, near Aberdovey, for more than seven miles to two villages in the south Gwynedd countryside.
Homes in parts of Tonypandy and Llwynypia are without water this evening due to a burst water main at Cilfynydd.