Cilfynydd BESS
Cilfynydd BESS is a storage project of 349.9 MW in NESO's TEC Register of 23 Oct 2026, connecting at Cilfynydd 400kV Substation (NGET). Status: Scoping. Gate 1.
- Customer
- Cilfynydd BESS Limited
- Connection site
- Cilfynydd 400kV Substation
- Transmission owner
- NGET
- Technology
- Storage
- Capacity (TEC)
- 349.9 MW
- Agreement
- Direct Connection
- Gate
- Gate 1
- Status
- Scoping
- MW effective from
- 15 Sept 2037
- NESO project number
- PRO-002756
Also at Cilfynydd 400kV Substation
| Project | Technology | MW |
|---|---|---|
| BESS Cilfynydd | Storage | 200 |
| Cilfynydd | Storage, Solar, Onshore wind | 400 |
| Cilfynydd 2 | Storage | 240 |
| Cilfynydd Green Energy Centre | Demand, Storage, Solar, Onshore wind | 400–1,025 |
| Cilfynydd Grid Stability Services | Reactive Compensation | 0 |
| Merthyr Solar and Battery | Solar | 110–175 |
| Penrhiwdarren Farm | Storage | 500 |
| Twyn Hywel Cillfynydd | Onshore wind | 107.8 |
Source
- NESO TEC Register, National Energy System Operator, publication of 23 Oct 2026. NESO Open Data Licence.