The ESB expects further power cuts as stormy weather continues to move across the country as the remnants of Hurricane Katia hit Ireland.
There are now around 2,000 customers without power with the midlands worst affected.
Earlier areas like Cavan, Longford, Mayo, Sligo and Donegal were hit by outages and around 200 customers in the Northwest still have no electricity.
Winds gusting up to 130km/h are expected.
Winds gusting up to 130km/h are expected with the north and north-west expected to bear the brunt of the storm.
The Coast Guard urged people to take care during the stormy conditions, particularly around the coast and in exposed areas. It urged people to avoid sea or water-based activities and taking dangerous cliff walks alone.
Trees were brought down in Galway city and county while high tides made worse by the gales caused severe flooding along the promenade in Salthill.
In Clare, the Cliffs of Moher visitors' centre urged people to postpone planned trips to the site while in Limerick flying debris was making driving conditions treacherous.
Road travel in counties Cork, Tipperary, Donegal, Galway and Kildare was also disrupted by fallen trees and branches and flooding.
Elsewhere, the Irish Ferries Swift sailings from Dublin to Holyhead have been cancelled because of rough seas.
P&O Ferries has also cancelled its afternoon's Dublin - Liverpool service and tomorrow's 3am sailing from Liverpool.
Forecasters said winds speeds will range from 50 to 80km/h - with gusts ranging 90 to 130 km/h.
Internet weather news site, irishweatheronline.com, reported gusts of wind as high 137km/h on Arranmore island off Donegal.
The Harry Blaney bridge, which spans Mulroy bay off the Fanad peninsula in north Donegal, was shut as a precautionary measure.
Local ferry services to and from the islands off the county were cancelled for the day.