Connah's Quay 400kV Substation

Connah's Quay 400kV Substation (NGET) has 4 projects in NESO's TEC Register of 23 Oct 2026: 1,210 MW in the queue, 190 MW of it Gate 2, 1,210 MW Gate 1, and 1,570 MW connected. Contracted capacity, not headroom.

Transmission owner: NGET
Projects: 4
MW in the queue: 1,210 MW
Gate 2 MW: 190 MW
Gate 1 MW: 1,210 MW
MW connected: 1,570 MW

By technology

Technology	Projects	MW
Gas	1	1,380
Offshore wind	1	1,000
Marine	1	210
Reactive Compensation	1	190
Storage	1	190

Projects at Connah's Quay 400kV Substation

Project	Technology	MW	Gate	Status	MW effective from
Connah's Quay	Gas	1,380		Built
Icewind Connah's Quay	Offshore wind	1,000	Gate 1	Scoping	1 Nov 2033
Port of Mostyn	Marine	70–210	Gate 1	Scoping	1 Dec 2030, 1 Jun 2031, 1 Jan 2032
Deeside Power Station	Storage, Reactive Compensation	190	Gate 2	Built	25 Oct 2026

Source

NESO TEC Register, National Energy System Operator, publication of 23 Oct 2026. NESO Open Data Licence.