Grid Guardian / Transmission (TEC) register / High Marnham 400kV SubstationHigh Marnham 400kV Substation High Marnham 400kV Substation (NGET) has 9 projects in NESO's TEC Register of 23 Oct 2026: 3,596 MW in the queue, 57 MW of it Gate 2, 588.9 MW Gate 1, and 450 MW connected. Contracted capacity, not headroom.
Transmission owner NGET
Projects 9
MW in the queue 3,596 MW
Gate 2 MW 57 MW
Gate 1 MW 588.9 MW
MW connected 450 MW
Earliest confirmed date 31 Oct 2030 By technology Technology Projects MW Storage 8 3,946 Solar 7 3,297 CHP (Combined Heat and Power) 1 450 Onshore wind 1 450
Projects at High Marnham 400kV Substation Project Technology MW Gate Status MW effective from High Marnham 400 Storage, Solar 400–1,000 Awaiting Consents, Scoping 31 Oct 2033, 31 Oct 2034 One Earth Solar Farm Storage, Solar 740 Awaiting Consents 31 Oct 2029 Welbeck-Newark Solar Farm - PVDP Storage, Solar 710 Scoping 30 Oct 2034 High Marnham BESS Storage 500 Scoping 30 Oct 2034 JG Pears CHP (Combined Heat and Power), Storage, Solar, Onshore wind 450 Built 31 Oct 2033 Mosedale Energy Storage 249 Gate 1 Scoping 31 Oct 2033 Morton Manor PV & BESS Station Storage, Solar 240 Gate 1 Scoping 30 Oct 2034 High Marnham Solar Farm Solar 99.9 Gate 1 Scoping 31 Oct 2031 High Marnham (Tertiary) Storage, Solar 57 Gate 2 Consents Approved 31 Oct 2030
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