Storm Bert made landfall overnight, leaving tens of thousands of homes without power in key areas nationwide.
ESB crews are currently out assessing the damage.
A spokesperson for the company says they are making repairs where it's safe to do so.
However the full picture on power-outages won't be known until later in the morning.
Nationwide impact
Founder of Ireland’s Weather Channel Cathal Nolan said winds could reach over 100 kilometres per hour.
“Very inclement conditions indeed and accompanying the very heavy rain, we will also see very strong wind,” he said.
“In coastal counties, they'll go up to between 100 to 110 kilometres per hour, especially again along southern coasts and later on transferring up along western seaboard areas as well.
“Across land, we've status yellow weather warnings in place.
“Really, the whole country will see some impact from Storm Bert, but certainly it's those status red warnings that we're most concerned about at the moment.”
Train services
According to Iarnród Éireann, the bad weather has impacted some early morning rail services.
The 7.15am service from Westport to Dublin Heuston has yet to depart the Co Mayo town due to flooding, while the 6.40am train from Sligo to Dublin Connolly is delayed at Boyle due to weather-related issues.
All DART and suburban rail services are running as normal.
Warnings
A Status Red rain warning is in effect until 10 this morning for Cork and Galway.
A Status Orange warning is in effect for Waterford, Kerry, Clare, Mayo, Sligo and Leitrim.
A status Yellow Snow, Ice, Rain and wind warning is in place for Donegal.
The rest of the country is under a status yellow alert for wind and rain, with a respite coming this afternoon.
