Grid infrastructure βΊ Connection queue βΊ Interconnector
INTERCONNECTOR Β· NGETCeltic MPI
Celtic MPI is a 1.5 GW interconnector project in planning, connecting to the National Grid (England & Wales) network at Alverdiscott 400kV Substation, with capacity due from October 2037. The connection agreement is held by National Grid Interconnector Holdings Limited.
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Oct 2037 (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-003461
- Customer
- National Grid Interconnector Holdings Limited
- Technology
- Interconnector
- Export capacity
- 1.5 GW
- Import capacity
- 1.5 GW
- Change in this agreement
- +1.5 GW
- Capacity effective from
- 31 October 2037
- Connection site
- Alverdiscott 400kV Substation
- Transmission owner
- National Grid (England & Wales)
- Connection type
- Interconnector
- NESO project status
- Scoping
- Connections reform gate
- Gate 1
Connection site
The marker shows the connection substation, not the project itself, with the transmission network around it.
Other projects at Alverdiscott 400kV Substation
- GallosOffshore wind Β· 2.0 GW Β· Scoping
- AlverdiscottInterconnector Β· 1.8 GW Β· Scoping
- Alverdiscott 2Interconnector Β· 1.8 GW Β· Scoping
- Merlin 2 Offshore WindfarmOffshore wind Β· 1.5 GW Β· Scoping
- SSE Celtic Sea 1Offshore wind Β· 1.5 GW Β· Scoping
- Cormoran Offshore Wind FarmOffshore wind Β· 1.0 GW Β· Scoping
- Mererid Offshore Wind FarmOffshore wind Β· 1.0 GW Β· Scoping
- Alverdiscott FarmSolar + storage Β· 1.0 GW Β· Scoping
- Celtic 2 Offshore Wind FarmOffshore wind Β· 1.0 GW Β· Scoping
- Equinor Celtic Sea 1Offshore wind Β· 1.0 GW Β· Scoping
- Gwynt Glas Offshore Wind Farm 2Offshore wind Β· 1.0 GW Β· Scoping
- Petroc Extension Offshore Wind FarmOffshore wind Β· 1.0 GW Β· Scoping
- Gwynt Glas Offshore Wind FarmOffshore wind Β· 300 MW Β· Scoping
- Merlin Offshore Wind FarmOffshore wind Β· 300 MW Β· Scoping
- Morwind 300Offshore wind Β· 300 MW Β· Scoping
Source: NESO interconnector register, downloaded 8 November 2026. Contains data from NESO, licensed under the NESO Open Data Licence. Report a problem