35 thousand homes, farms and businesses have been left without power because of Storm Hector.
The worst affected areas are Donegal, Sligo, Mayo and Galway - where an orange wind warning remains in place.
A yellow warning for 13 other counties including Cavan, Monaghan, Dublin, Kildare and Kerry is in place until 10am this morning.
There are also reports of fallen trees across the country -
There are reports of a tree partially blocking the M4 eastbound between Junction 9 Enfield and Junction 8 Kilcock.
There are fallen trees on the Kilcock/Enfield Rd (R148) and the Clane/Prosperous Rd (R403).
Gardaí are urging motorists to take care on the roads.
Paul Hand is from ESB Networks:
Met Eireann's Gerry Murphy says the winds will east throughout the day: