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Wymondley 400kV Substation

Wymondley 400kV Substation (NGET) has 6 projects in NESO's TEC Register of 23 Oct 2026: 1,543 MW in the queue, 107 MW of it Gate 2, 400 MW Gate 1, and 15 MW connected. Contracted capacity, not headroom.

Transmission owner: NGET
Projects: 6
MW in the queue: 1,543 MW
Gate 2 MW: 107 MW
Gate 1 MW: 400 MW
MW connected: 15 MW
Earliest confirmed date: 30 May 2027

By technology

Technology	Projects	MW
Storage	5	1,543
Solar	4	1,507
Onshore wind	1	1,000
Reactive Compensation	1	1,000
Gas	1	15

Projects at Wymondley 400kV Substation

Project	Technology	MW	Gate	Status	MW effective from
Wymondley High Impact Green Energy Hub (HIGEH) 1	Storage, Solar, Reactive Compensation, Onshore wind	1,000		Scoping	31 Oct 2033
Wymondley	Storage, Solar	400	Gate 1	Scoping	31 Oct 2032
Wymondley	Storage, Solar	57	Gate 2	Consents Approved	30 May 2027
Wymondley Solar Farm	Storage, Solar	50	Gate 2	Consents Approved	30 May 2027
Wymondley BESS Limited	Storage	35.5		Awaiting Consents	31 Oct 2034
Green Frog @ Letchworth	Gas	15		Built

Source

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