Taoiseach Micheal Martin said every effort is being made to restore power and water supplies following Storm Éowyn.
He described the destruction caused by some of the strongest winds on record as “unprecedented”.
One man was killed during the storm. Kacper Dudek, 20, died when a tree fell on his car in Co Donegal early on Friday morning as Storm Eowyn started its destructive course across Ireland.
Record-breaking winds saw buildings damaged and roads blocked.
Around 625,000 remain without power across the Irish Republic and around 138,000 people had no water as of Friday evening.
The Taoiseach thanked emergency crews and responders working to restore power and clear roads, and said a huge amount of work is needed in the days ahead to restore electricity, water and communications to hundreds of thousands of…