| Aquind Interconnector | Aquind Limited | Lovedean 400kV Substation | | 0 | 0 | 2000 | 2075 | 2000 | 2075 | 31/12/2030 | Awaiting Consents | NGET | PRO-000285 | |
| Auchencrosh (interconnector CCT) | MOYLE INTERCONNECTOR LIMITED* | Auchencrosh 275kV | 1 | 270 | 500 | 205 | 0 | 475 | 500 | 01/04/2022 | Built | SPT | PRO-001292-1 | |
| Auchencrosh (interconnector CCT) | MOYLE INTERCONNECTOR LIMITED* | Auchencrosh 275kV | 2 | 475 | 500 | 25 | 0 | 500 | 500 | 01/08/2022 | Built | SPT | PRO-001292-2 | |
| Britned | BRITNED DEVELOPMENT LIMITED | Grain 400kV Substation | | 1200 | 1200 | 0 | 0 | 1200 | 1200 | | Built | NGET | PRO-000280 | |
| Celtic MPI | National Grid Interconnector Holdings Limited | Alverdiscott 400kV Substation | | 0 | 0 | 1500 | 1500 | 1500 | 1500 | 31/10/2037 | Scoping | NGET | PRO-003461 | 1 |
| Continental Link | National Grid Interconnector Holdings Limited | Birkhill Wood 400kV Substation | | 0 | 0 | 1800 | 1800 | 1800 | 1800 | 31/10/2035 | Scoping | NGET | PRO-000977 | |
| Cronos | CRONOS ENERGY LTD | Kemsley 400kV Substation | | 0 | 0 | 1400 | 1400 | 1400 | 1400 | 31/10/2029 | Scoping | NGET | PRO-000984 | |
| East West Interconnector | EIRGRID INTERCONNECTOR DESIGNATED ACTIVITY COMPANY | Deeside 400kV Substation | | 505 | 585 | 0 | 0 | 505 | 585 | | Built | NGET | PRO-000284 | |
| ElecLink | ELECLINK LIMITED | Sellindge 400kV Substation | | 1000 | 1050 | 0 | 0 | 1000 | 1050 | | Built | NGET | PRO-000286 | |
| FAB Link Interconnector | FAB Link Limited | Exeter 400kV Substation | | 0 | 0 | 1250 | 1310 | 1250 | 1310 | 30/09/2032 | Awaiting Consents | NGET | PRO-000281 | |
| GB-EU MPI | Windgrid | Fiddes 400kV Substation | | 0 | 0 | 1800 | 1800 | 1800 | 1800 | 31/10/2033 | Scoping | SHET | PRO-004398 | |
| Greenlink | GREENLINK INTERCONNECTOR LIMITED | Pembroke 400kV Substation | | 504 | 524 | 0 | 0 | 504 | 524 | | Built | NGET | PRO-000279 | |
| Gridlink Interconnector | Gridlink Interconnector Limited | Kingsnorth 400kV Substation | | 0 | 0 | 1500 | 1500 | 1500 | 1500 | 31/03/2029 | Scoping | NGET | PRO-000287 | |
| IFA Interconnector | NATIONAL GRID INTERCONNECTORS LIMITED | Sellindge 400kV Substation | | 1988 | 1988 | 0 | 0 | 1988 | 1988 | | Built | NGET | PRO-000282 | |
| IFA2 Interconnector | NATIONAL GRID IFA 2 LIMITED | Chilling 400kV Substation | | 1100 | 1150 | 0 | 0 | 1100 | 1150 | | Built | NGET | PRO-000283 | |
| Isle of Man Interconnector | MANX UTILITIES | Bispham 132kV Substation | | 74 | 74 | 0 | 0 | 74 | 74 | | Built | NGET | PRO-001291 | |
| Kulizumboo Interconnector | KULIZUMBOO LIMITED | Canterbury North 400kV Substation | | 0 | 0 | 700 | 700 | 700 | 700 | 01/04/2031 | Scoping | NGET | PRO-001290 | |
| LionLink (EuroLink) | National Grid Interconnector Holdings Limited | Friston 400kV Substation | | 0 | 0 | 1600 | 1600 | 1600 | 1600 | 30/10/2024 | Scoping | NGET | PRO-000983 | |
| LIRIC Interconnector | TI LIRIC Limited | Hunterston East 400kV | | 0 | 0 | 730 | 700 | 730 | 700 | 31/10/2032 | Scoping | SPT | PRO-001454 | |
| Low Carbon Link | LOW CARBON SOLAR PARK 39 LIMITED | Pembroke GSP | | 0 | 0 | 1400 | 1400 | 1400 | 1400 | 31/10/2037 | Scoping | NGET | PRO-004262 | |
| MARES | Maresconnect Limited | Bodelwyddan 400kV Substation | | 0 | 0 | 750 | 750 | 750 | 750 | 30/11/2028 | Awaiting Consents | NGET | PRO-000978 | |
| Nautilus | National Grid Interconnector Holdings Limited | Wallend 400kV Substation | | 0 | 0 | 1500 | 1500 | 1500 | 1500 | 31/10/2029 | Scoping | NGET | PRO-000976 | |
| Nemo Link | NEMO LINK LIMITED | Richborough 400kV Substation | | 1020 | 1046 | 0 | 0 | 1020 | 1046 | | Built | NGET | PRO-000974 | |
| NeuConnect Interconnector | Neuconnect Britain Ltd | Grain West 400kV Substation | | 0 | 0 | 1400 | 1470 | 1400 | 1470 | 01/08/2026 | Under Construction/Commissioning | NGET | PRO-001288 | |
| NorthConnect | NORTHCONNECT LIMITED | Peterhead 400kV Substation | | 0 | 0 | 1400 | 1400 | 1400 | 1400 | 01/03/2030 | Scoping | SHET | PRO-001285 | |
| NS Link | NATIONAL GRID NORTH SEA LINK LIMITED | Blyth GSP | | 1400 | 1480 | 0 | 0 | 1400 | 1480 | | Built | NGET | PRO-000975 | |
| Project Cobalt | GETLINK PROJECTS 2 LIMITED | East Kent Connection Node B 400kV Substation | | 0 | 0 | 1000 | 1050 | 1000 | 1050 | 30/10/2036 | Scoping | NGET | PRO-004402 | |
| SENECA | FRONTIER POWER INTERNATIONAL LIMITED | Mablethorpe 400kV Substation | | 0 | 0 | 1200 | 1254 | 1200 | 1254 | 30/11/2031 | Scoping | NGET | PRO-000981 | |
| Tarchon | Tarchon Energy Limited | East Anglia Connection Node 400kV Substation | | 0 | 0 | 1400 | 1400 | 1400 | 1400 | 31/10/2030 | Scoping | NGET | PRO-001289 | |
| Teeside MPI | National Grid Interconnector Holdings Limited | Wearside Connection Node B 400kV Substation | | 0 | 0 | 1800 | 1800 | 1800 | 1800 | 31/10/2033 | Scoping | NGET | PRO-003462 | 1 |
| The Superconnection | ASC ENERGY LIMITED | Creyke Beck 400kV Substation | | 0 | 0 | 1000 | 1000 | 1000 | 1000 | 01/09/2027 | Scoping | NGET | PRO-001284 | |
| Viking Link Denmark Interconnector | NATIONAL GRID VIKING LINK LIMITED | Bicker Fen 400kV Substation | | 1500 | 1500 | 0 | 0 | 1500 | 1500 | | Built | NGET | PRO-000288 | |
| Western MPI | National Grid Interconnector Holdings Limited | Connah's Quay 400kV Substation | | 0 | 0 | 1500 | 1500 | 1500 | 1500 | 31/10/2037 | Scoping | NGET | PRO-003463 | 1 |