Scottish Power says that some of the 500 homes are unlikely to be reconnected to the power network tonight. It say it is doing everything it can, but cannot guarantee they will have electricity today.
Llangollen is still the worst affected area with Mold also experiencing problems.
They say that engineers will work as late as possible to reconnect customers.
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Welsh Secretary Stephen Crabb has launched an attack on Labour leader Ed Miliband, saying he "doesn't give a toss about Wales".
Mainly dry with lengthy clear spells overnight and just a few showers likely, especially in the north and west.
Ysgol Uwchradd Caergybi became the UK's first comprehensive 65 years ago. Academies are now dominant in England, but certainly not in Wales.