Grid infrastructure › Connection queue › Solar + storage
SOLAR + STORAGE · NGETHigh Marnham 400
High Marnham 400 is a 1.0 GW solar + storage project in planning, connecting to the National Grid (England & Wales) network at High Marnham 400kV Substation, with capacity due from October 2034. The connection agreement is held by Enso Green Holdings X Limited.
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Oct 2034 (not yet reached)
- Closed (not yet reached)
Scoping and awaiting consents are both shown as planning. A connection agreement does not mean the project will be built: many queue projects never reach construction.
Connection details
- NESO project number
- PRO-002194-2
- Customer
- Enso Green Holdings X Limited
- Technology
- Energy Storage System, PV Array (Photo Voltaic/solar)
- Total capacity
- 1.0 GW
- Change in this agreement
- +600 MW
- Capacity effective from
- 31 October 2034
- Connection site
- High Marnham 400kV Substation
- Transmission owner
- National Grid (England & Wales)
- Connection type
- Direct connection to the transmission network
- NESO project status
- Scoping
Connection site
The marker shows the connection substation, not the project itself, with the transmission network around it.
Other projects at High Marnham 400kV Substation
- One Earth Solar FarmSolar + storage · 740 MW · Awaiting Consents
- Welbeck-Newark Solar Farm - PVDPSolar + storage · 710 MW · Scoping
- High Marnham BESSBattery storage · 500 MW · Scoping
- High Marnham 400Solar + storage · 400 MW · Awaiting Consents
- Mosedale EnergyBattery storage · 249 MW · Scoping
- Morton Manor PV & BESS StationSolar + storage · 240 MW · Scoping
- High Marnham Solar FarmSolar · 100 MW · Scoping
- High Marnham (Tertiary)Solar + storage · 57 MW · Consents Approved
Source: NESO Transmission Entry Capacity (TEC) register, downloaded 8 November 2026. Contains data from NESO, licensed under the NESO Open Data Licence. Report a problem