High Marnham 400
High Marnham 400 is a storage, solar project of 400–1,000 MW in NESO's TEC Register of 23 Oct 2026, connecting at High Marnham 400kV Substation (NGET). Status: Awaiting Consents, Scoping.
- Customer
- ENSO GREEN HOLDINGS X LIMITED
- Connection site
- High Marnham 400kV Substation
- Transmission owner
- NGET
- Technology
- Storage, Solar
- Capacity (TEC)
- 400–1,000 MW
- Agreement
- Direct Connection
- Status
- Awaiting Consents, Scoping
- MW effective from
- 31 Oct 2033, 31 Oct 2034
- NESO project number
- PRO-002194-1, PRO-002194-2
Also at High Marnham 400kV Substation
| Project | Technology | MW |
|---|---|---|
| High Marnham (Tertiary) | Storage, Solar | 57 |
| High Marnham BESS | Storage | 500 |
| High Marnham Solar Farm | Solar | 99.9 |
| JG Pears | CHP (Combined Heat and Power), Storage, Solar, Onshore wind | 450 |
| Morton Manor PV & BESS Station | Storage, Solar | 240 |
| Mosedale Energy | Storage | 249 |
| One Earth Solar Farm | Storage, Solar | 740 |
| Welbeck-Newark Solar Farm - PVDP | Storage, Solar | 710 |
Source
- NESO TEC Register, National Energy System Operator, publication of 23 Oct 2026. NESO Open Data Licence.