Grid connection · Wales, United Kingdom
ER TWD Energy grid connection
ER TWD Energy grid connection is a planned grid connection in Wales, United Kingdom, with 700 MW of capacity, held by ER Project Development Co 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 (connection site: Llanteg 400kV Substation) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Status | Planned (Scoping) | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Holder | ER Project Development Co Limited | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Attached to | ER TWD Energy | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Capacity | 700 MW | NESO TEC Register · NESO Open Data Licence v1.0 · checked 24 Oct 2026 |
| Technology | Wind Onshore | 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 | 15 Sept 2037 | 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
ER TWD Energy grid connection is the 16th-largest of 158 grid connections in Wales and the 271st-largest of 3,903 in the United Kingdom by capacity; its 700 MW is 0.16% 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 | 16th of 158 | 21,044 MW | 3.3% |
| United Kingdom | 271st of 3,903 | 446,745 MW | 0.16% |
| All grid connections in our data | 455th of 7,616 | 1,281,251 MW | <0.1% |
Holder, grid operator and place
More from ER Project Development Co Limited
- ER LIL Energy grid connection1,000 MW
- ER BR Energy grid connection1,000 MW
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
- Legacy Green Energy Centre grid connection1,200 MW
- Awel Y Mor grid connection1,100 MW
- Cilfynydd Green Energy Centre grid connection1,025 MW
- Pentir Green Energy Centre grid connection1,025 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.