Which electricity DNO covers postcode BT18?

BT18 (Holywood) is distributed by NIE Networks (Northern Ireland). For any street power cut call 105 free 24/7.

Who supplies mains water and gas in BT18?

Water: NI Water (Northern Ireland); Gas network: Phoenix Energy (Northern Ireland).

BT18 District Holywood (North Down)

Live power cut, broadband, mobile 5G, water & gas network telemetry for UK postcode district BT18.

All / Power Broadband Mobile Water Gas

Electricity DNO (105)

NIE Networks (Northern Ireland)

Emergency: 105 / 03457 643 643

Water & Sewerage Company

NI Water (Northern Ireland)

Support: 03457 440 088

Gas Network (0800 111 999)

Phoenix Energy (Northern Ireland)

Smell gas? 0800 002 001

Provider	Matched District / Area	Status / Affected	ETR / Updated
NIE Networks (Northern Ireland)	BT1 Belfast (Postcode BT1) — NIE 5950345	1 properties	15 Nov 2026 at 1:00 am GMT
NIE Networks (Northern Ireland)	BT35 Jerrettspass, Bessbrook, Camlough, Crossmaglen, Belleek, Newtownhamilto…	21 properties	14 Nov 2026 at 8:30 pm GMT
NIE Networks (Northern Ireland)	BT19 Bangor (Postcode BT19) — NIE 5950321	1 properties	14 Nov 2026 at 8:00 pm GMT
NIE Networks (Northern Ireland)	BT17 Lisburn (Postcode BT17) — NIE 5950310	1 properties	14 Nov 2026 at 7:00 pm GMT

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