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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With all of the unsettled weather conditions over the next few days, pollen levels will remain low.