Major restoration efforts are being made across Ireland after Storm Éowyn left over 800,000 homes, farms and businesses without power.

ESB Networks have labelled it "by far the worst storm" experienced by the energy provider both in terms of customers losing supply and the scale of damage across the network after 768,000 were left powerless at its peak on early Friday morning.

As of yesterday, ESB Networks had restored power to 490,000 customers, although 278,000 were still left dealing with the unprecedented impact of the storm.

The company anticipate that the vast majority of customers who lost power during Storm Éowyn will have supply restored by Friday night, January 31.

The remaining customers, which could be as many as 100,000, will progressively have power restored over the course of the following week.

Additionally, difficult conditions continued on Sunday due to Storm Herminia and although this storm didn't cause significant damage to the network, it did make power restoration more challenging in places. 

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Support is being received from Great Britain and ESB Networks have requested further support from electricity network operators across Europe. 

Furthermore, ESB Networks crews from the south and east of the country are being redeployed to the worst impacted areas once restoration in their areas has been completed, while skilled retirees from ESB Networks are also being redrafted to assist.      

ESB Networks has published estimated restore times for most of its faults on www.PowerCheck.ie, which are now the most accurate indications based on fault site assessments of when customers can expect to have their power restored. 

Meanwhile, as of 7.30am this morning in Northern Ireland, approximately 65,000 customers remain without electricity across the country, according to NIE Networks.

Despite the challenging weather conditions, NIE Networks have over 1,000 staff escalated, with power now restored to 220,000 properties since Friday.

NIE Networks' Incident Management Centre at Craigavon in County Armagh remains open, as well as its Local Incident Centres, which are in locations across Northern Ireland and used by its teams to co-ordinate its localised response.

Faults can be reported online and status updates can be found at www.nienetworks.co.uk

Both ESB Networks and NIE Networks have issued safety advice to the public.