Grid connection · Wales, United Kingdom
Legacy Green Energy Centre grid connection
Legacy Green Energy Centre grid connection is a planned grid connection in Wales, United Kingdom, with 1,200 MW of capacity, held by Legacy Green Energy 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 | Wales (connects at Legacy 400kV Substation) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Status | Planned (awaiting consents) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Holder | Legacy Green Energy Limited | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Attached to | Legacy Green Energy Centre | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Capacity | 1,200 MW | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Technology | Energy Storage System | 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 | 30 Oct 2027 (stage 1, cumulative 400 MW) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Connection date | 28 Oct 2037 (stage 2, cumulative 1,200 MW) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Connection gate | Gate 1 | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
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How it compares
Legacy Green Energy Centre grid connection is the 5th-largest of 158 grid connections in Wales and the 84th-largest of 3,903 in the United Kingdom by capacity; its 1,200 MW is 0.27% 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 |
|---|---|---|---|
| Wales | 5th of 158 | 21,044 MW | 5.7% |
| United Kingdom | 84th of 3,903 | 446,745 MW | 0.27% |
| All grid connections in our data | 153rd of 7,616 | 1,281,251 MW | <0.1% |
Timeline
Dated facts about this grid connection from its sources, oldest first.
- Stage 1 due to connect, 400 MW in total
- Stage 2 due to connect, 1,200 MW in total
Holder, grid operator and place
Other grid connections in Wales
- Pembroke Power Station grid connection2,199 MW
- Dinorwig grid connection1,644 MW
- Mona Offshore Wind Farm grid connection1,500 MW
- Connah's Quay grid connection1,380 MW
- Awel Y Mor grid connection1,100 MW
- Cilfynydd Green Energy Centre grid connection1,025 MW
- Pentir Green Energy Centre grid connection1,025 MW
- Swansea North Green Energy Centre grid connection1,025 MW
Data on this page
- California ISO. Checked 2026-10-24. 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, Free reuse.
- PJM New Services Queue. PJM New Services Queue, Free reuse.
- 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.