| Aquind Interconnector | Aquind Limited | Lovedean 400kV Substation | | 0.00 | 0.00 | 2000.00 | 2075.00 | 2000.00 | 2075.00 | 2030-12-31 | Awaiting Consents | NGET | PRO-000285 | |
| Auchencrosh (interconnector CCT) | MOYLE INTERCONNECTOR LIMITED | Auchencrosh 275kV | 1.00 | 270.00 | 500.00 | 205.00 | 0.00 | 475.00 | 500.00 | 2022-04-01 | Built | SPT | PRO-001292-1 | |
| Auchencrosh (interconnector CCT) | MOYLE INTERCONNECTOR LIMITED | Auchencrosh 275kV | 2.00 | 475.00 | 500.00 | 25.00 | 0.00 | 500.00 | 500.00 | 2022-08-01 | Built | SPT | PRO-001292-2 | |
| Britned | BRITNED DEVELOPMENT LIMITED | Grain 400kV Substation | | 1200.00 | 1200.00 | 0.00 | 0.00 | 1200.00 | 1200.00 | | Built | NGET | PRO-000280 | |
| Celtic MPI | National Grid Interconnector Holdings Limited | Alverdiscott 400kV Substation | | 0.00 | 0.00 | 1500.00 | 1500.00 | 1500.00 | 1500.00 | 2037-10-31 | Scoping | NGET | PRO-003461 | 1 |
| Continental Link | National Grid Interconnector Holdings Limited | Birkhill Wood 400kV Substation | | 0.00 | 0.00 | 1800.00 | 1800.00 | 1800.00 | 1800.00 | 2035-10-31 | Scoping | NGET | PRO-000977 | |
| Cronos | CRONOS ENERGY LTD | Kemsley 400kV Substation | | 0.00 | 0.00 | 1400.00 | 1400.00 | 1400.00 | 1400.00 | 2029-10-31 | Scoping | NGET | PRO-000984 | |
| East West Interconnector | EIRGRID INTERCONNECTOR DESIGNATED ACTIVITY COMPANY | Deeside 400kV Substation | | 505.00 | 585.00 | 0.00 | 0.00 | 505.00 | 585.00 | | Built | NGET | PRO-000284 | |
| ElecLink | ELECLINK LIMITED | Sellindge 400kV Substation | | 1000.00 | 1050.00 | 0.00 | 0.00 | 1000.00 | 1050.00 | | Built | NGET | PRO-000286 | |
| FAB Link Interconnector | FAB Link Limited | Exeter 400kV Substation | | 0.00 | 0.00 | 1250.00 | 1310.00 | 1250.00 | 1310.00 | 2032-09-30 | Awaiting Consents | NGET | PRO-000281 | |
| GB-EU MPI | Windgrid | Fiddes 400kV Substation | | 0.00 | 0.00 | 1800.00 | 1800.00 | 1800.00 | 1800.00 | 2033-10-31 | Scoping | SHET | PRO-004398 | |
| Greenlink | GREENLINK INTERCONNECTOR LIMITED | Pembroke 400kV Substation | | 504.00 | 524.00 | 0.00 | 0.00 | 504.00 | 524.00 | | Built | NGET | PRO-000279 | |
| Gridlink Interconnector | Gridlink Interconnector Limited | Kingsnorth 400kV Substation | | 0.00 | 0.00 | 1500.00 | 1500.00 | 1500.00 | 1500.00 | 2029-03-31 | Scoping | NGET | PRO-000287 | |
| IFA Interconnector | NATIONAL GRID INTERCONNECTORS LIMITED | Sellindge 400kV Substation | | 1988.00 | 1988.00 | 0.00 | 0.00 | 1988.00 | 1988.00 | | Built | NGET | PRO-000282 | |
| IFA2 Interconnector | NATIONAL GRID IFA 2 LIMITED | Chilling 400kV Substation | | 1100.00 | 1150.00 | 0.00 | 0.00 | 1100.00 | 1150.00 | | Built | NGET | PRO-000283 | |
| Isle of Man Interconnector | MANX UTILITIES | Bispham 132kV Substation | | 74.00 | 74.00 | 0.00 | 0.00 | 74.00 | 74.00 | | Built | NGET | PRO-001291 | |
| Kulizumboo Interconnector | KULIZUMBOO LIMITED | Canterbury 400kV GIS Substation | | 0.00 | 0.00 | 700.00 | 700.00 | 700.00 | 700.00 | 2031-04-01 | Scoping | NGET | PRO-001290 | 1 |
| LionLink (EuroLink) | National Grid Interconnector Holdings Limited | Friston 400kV Substation | | 0.00 | 0.00 | 1600.00 | 1600.00 | 1600.00 | 1600.00 | 2024-10-30 | Scoping | NGET | PRO-000983 | |
| LIRIC Interconnector | TI LIRIC Limited | Hunterston East 400kV | | 0.00 | 0.00 | 730.00 | 700.00 | 730.00 | 700.00 | 2032-10-31 | Scoping | SPT | PRO-001454 | |
| Low Carbon Link | LOW CARBON SOLAR PARK 39 LIMITED | SOUTH WALES WEST CONNECTION NODE C 400KV SUBSTATION | | 0.00 | 0.00 | 1400.00 | 1400.00 | 1400.00 | 1400.00 | 2037-10-31 | Scoping | NGET | PRO-004262 | 1 |
| MARES | Maresconnect Limited | Bodelwyddan 400kV Substation | | 0.00 | 0.00 | 750.00 | 750.00 | 750.00 | 750.00 | 2028-11-30 | Awaiting Consents | NGET | PRO-000978 | |
| Nautilus | National Grid Interconnector Holdings Limited | Wallend 400kV Substation | | 0.00 | 0.00 | 1500.00 | 1500.00 | 1500.00 | 1500.00 | 2029-10-31 | Scoping | NGET | PRO-000976 | |
| Nemo Link | NEMO LINK LIMITED | Richborough 400kV Substation | | 1020.00 | 1046.00 | 0.00 | 0.00 | 1020.00 | 1046.00 | | Built | NGET | PRO-000974 | |
| NeuConnect Interconnector | Neuconnect Britain Ltd | Grain West 400kV Substation | | 0.00 | 0.00 | 1400.00 | 1470.00 | 1400.00 | 1470.00 | 2026-08-01 | Under Construction/Commissioning | NGET | PRO-001288 | |
| NorthConnect | NORTHCONNECT LIMITED | Peterhead 400kV Substation | | 0.00 | 0.00 | 1400.00 | 1400.00 | 1400.00 | 1400.00 | 2030-03-01 | Scoping | SHET | PRO-001285 | |
| NS Link | NATIONAL GRID NORTH SEA LINK LIMITED | Blyth GSP | | 1400.00 | 1480.00 | 0.00 | 0.00 | 1400.00 | 1480.00 | | Built | NGET | PRO-000975 | |
| Project Cobalt | GETLINK PROJECTS 2 LIMITED | East Kent Connection Node B 400kV Substation | | 0.00 | 0.00 | 1000.00 | 1050.00 | 1000.00 | 1050.00 | 2036-10-30 | Scoping | NGET | PRO-004402 | 1 |
| SENECA | FRONTIER POWER INTERNATIONAL LIMITED | Mablethorpe 400kV Substation | | 0.00 | 0.00 | 1200.00 | 1254.00 | 1200.00 | 1254.00 | 2031-11-30 | Scoping | NGET | PRO-000981 | |
| Tarchon | Tarchon Energy Limited | East Anglia Connection Node 400kV Substation | | 0.00 | 0.00 | 1400.00 | 1400.00 | 1400.00 | 1400.00 | 2030-10-31 | Scoping | NGET | PRO-001289 | |
| Teeside MPI | National Grid Interconnector Holdings Limited | Wearside Connection Node B 400kV Substation | | 0.00 | 0.00 | 1800.00 | 1800.00 | 1800.00 | 1800.00 | 2033-10-31 | Scoping | NGET | PRO-003462 | 1 |
| The Superconnection | ASC ENERGY PLC | Creyke Beck 400kV Substation | | 0.00 | 0.00 | 1000.00 | 1000.00 | 1000.00 | 1000.00 | 2027-09-01 | Scoping | NGET | PRO-001284 | |
| Viking Link Denmark Interconnector | NATIONAL GRID VIKING LINK LIMITED | Bicker Fen 400kV Substation | | 1500.00 | 1500.00 | 0.00 | 0.00 | 1500.00 | 1500.00 | | Built | NGET | PRO-000288 | |
| Western MPI | National Grid Interconnector Holdings Limited | Connah's Quay 400kV Substation | | 0.00 | 0.00 | 1500.00 | 1500.00 | 1500.00 | 1500.00 | 2037-10-31 | Scoping | NGET | PRO-003463 | 1 |