Some 108,000 homes, businesses and farms remain without power and 7,500 without water seven days after Stormâ¯Ãowyn.
ESB Networks has restored supply to 660,000 customers, down from a peak ofâ¯768,000 without power in the immediate aftermath of the record-breaking storm which saw gusts of 183km/h.
The electricity supplier has warned about âvery dangerousâ¯incidentsâ where members of the public have âunknowinglyâ approached fallen electricity infrastructure and fallen debris, particularly in the worst affected areas of the country.â¯
Up to 3,000 electricity poles across the country must be replaced while 900km of new cable must be laid.
In Northern Ireland, about 23,500 customers are still without power following the storm, down from a height of 261,500, Northern Ireland Electricity Networks has said.
Uisce Ãireann has added that generators are now in place and connected at most of their affected water treatment sites. Alternative water supplies and tankers will remain in place as supplies return.
Additional progress is expected to be made today in restoring supplies to more areas.
In areas where water has not yet returned, alternative water supplies are being provided to support local communities. Uisce Ãireann is also liaising with Local Co-ordination Groups and Emergency Response Hubs in areas where these have been set up.
The water authority highlighted that for some local areas, where feasible, they will work to tanker water directly to the reservoir or into the network to return supply to customers.
In a statement Uisce Ãireann added that generators have been installed at âalmost all of the plants, pumping stations and reservoirs where it is feasible to do so and we are continuing to work closely with the ESB to prioritise the restoration of electricity supply in the remaining locationsâ.
Margaret Attridge, Head of Water Operations at Uisce Ãireann, said that their âpriorityâ now is to ensure the restoration of electricity to our plants and pumping stations that are running on generators or remain without power because âconnection to a generator is simply not possibleâ.
Ms Attridge said that they understand the impact that prolonged loss of water supply has on customers and in areas affected for longer periods, teams are providing alternative supplies and âwe currently have 50 locations around the country where alternative supplies are in place.â More will be deployed as required.
Uisce Ãireann is also reminding customers to continue to conserve water where possible in order to protect supply while the outages are resolved.
The EU is sending 17 power generators to aid with power restoration.
Several schools have experienced âsignificant damageâ as a result of the storm, according to the Department of Education and it has requested that any school which has incurred damage to make contact.
The managing director of ESB Networks has said that a review will be undertaken, in conjunction with other agencies, about the impact of the storm.
The results of the review will be published as it will have an impact on the future of the energy provider, he said.
Speaking on RTÃ radioâs Morning Ireland, Nicholas Tarrant acknowledged that some customers would not have power until next week. It was difficult to predict when power would come back as the scale of the damage from the storm was significant, he said.
âWhat was unique about the storm was it impacted from our high voltage network right down to medium voltage and low voltage.
He said the fact that much of Irelandâs electricity network relies on overhead cables was a factor. âWe have an electricity network in this country thatâs dominated by overhead lines. We have about 160,000km of overhead lines in this country,â he said.
Mr Tarrant said the issue of trees was going to have to be examined by ESB Networks in view of the damage caused to power supplies.
âWe still have over 100,000 people who donât have electricity this morning. We are working with huge resources. We have approximately 2,800 people working on the storm restoration directly,â he said.
