Grid connection · Wales, United Kingdom
Cefyn Mawr grid connection
Cefyn Mawr grid connection is a grid connection in Wales, United Kingdom, with 20 MW of capacity, connected by SP Manweb plc.
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: LEGACY LOCAL GT2 / NEWTOWN GT2 / OSWESTRY GT5 / OSWESTRY GT8 / WELSHPOOL GT1 / WHITCHURCH GT1) | SP Energy Networks open data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Status | Operating (Connected) | SP Energy Networks open data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Capacity | 20 MW | SP Energy Networks open data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Technology | Gas | SP Energy Networks open data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Grid operator | SP Manweb plc | SP Energy Networks open data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Connection date | 2 Aug 2018 | SP Energy Networks open data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Voltage | 33 kV | SP Energy Networks open data portal · CC BY 4.0 · checked 24 Oct 2026 |
Know more about this grid connection, or want an introduction to its grid operator? Ask us.
How it compares
Cefyn Mawr grid connection is the 78th-largest of 277 grid connections in Wales and the 1,850th-largest of 4,493 in the United Kingdom by capacity; its 20 MW is <0.1% of the 459,551 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 | 78th of 277 | 23,007 MW | <0.1% |
| United Kingdom | 1,850th of 4,493 | 459,551 MW | <0.1% |
Grid operator and place
More from SP Manweb plc
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
- SP Electricity North West, via Northern Powergrid Open Data. SP Electricity North West open data portal, CC BY 4.0.
- 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.
- 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.