Grid connection · England, United Kingdom
Sizewell C grid connection
Sizewell C grid connection is a permitted grid connection in England, United Kingdom, with 3,340 MW of capacity, held by Sizewell C Limited.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | England (connection site: Sizewell 400kV Substation) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Status | Permitted (Consents Approved) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Holder | Sizewell C Limited | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Attached to | Sizewell C | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Capacity | 3,340 MW | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Technology | Nuclear | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Grid operator | National Grid Electricity Transmission plc | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Connection date | 31 Jul 2036 (stage 2, cumulative 3,340 MW) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Connection date | 31 Jul 2035 (stage 1, cumulative 1,670 MW) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
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How it compares
Sizewell C grid connection is the 8th-largest of 2,533 grid connections in England and the 8th-largest of 3,903 in the United Kingdom by capacity; its 3,340 MW is 0.75% of the 446,745 MW we hold for the United Kingdom. Ranks and totals cover the grid connections in our data that report their capacity, not every one in existence.
| Within | Rank | Total | Share |
|---|---|---|---|
| England | 8th of 2,533 | 319,370 MW | 1% |
| United Kingdom | 8th of 3,903 | 446,745 MW | 0.75% |
| All grid connections in our data | 8th of 7,616 | 1,281,251 MW | 0.26% |
Timeline
Dated facts about this grid connection from its sources, oldest first.
- Stage 1 due to connect, 1,670 MW in total
- Stage 2 due to connect, 3,340 MW in total
Holder, grid operator and place
More from Sizewell C Limited
- The Sizewell C Projectpower plant · permitted
Other grid connections in England
- Bute Hydrogen Project 1 grid connection4,800 MW
- Drax BECCS grid connection3,906 MW
- Drax Power Station grid connection3,906 MW
- Bute Hydrogen Project 2 grid connection3,600 MW
- Bute Hydrogen Project 3 grid connection3,600 MW
- Bute Hydrogen Project 5 grid connection3,600 MW
- Bute Hydrogen Project 6 grid connection3,600 MW
- Hinkley Point C grid connection3,340 MW
Data on this page
- CAISO queue report. CAISO queue report, CAISO Privacy and Terms of Use.
- SP Electricity North West, via Northern Powergrid Open Data. SP Electricity North West open data portal, CC BY 4.0.
- ERCOT GIS report. ERCOT GIS report, ERCOT Terms of Use.
- Supported by National Energy SO Open Data. NESO TEC Register, NESO Open Data Licence v1.0.
- Supported by Northern Powergrid Open Data. Northern Powergrid open data portal, Northern Powergrid Open Data Licence v1.0.
- NYISO interconnection queue. NYISO interconnection queue, No restriction on the posted data.
- PJM New Services Queue. PJM New Services Queue, No restriction on the posted data.
- SP Energy Networks, via Northern Powergrid Open Data. SP Energy Networks open data portal, CC BY 4.0.
- SSEN Distribution. SSEN Distribution data portal, CC BY 4.0.