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NESO TEC REGISTER · GREAT BRITAINHydro and pumped storage projects in the connection queue
Every generator, battery and interconnector with an agreement to connect to the GB transmission network, from early scoping to built. Filter by technology, stage or network, and open a project for its connection details.
Map
Voltage400 kV275 kV132 kVHVDCNew HVAC
ProjectsPlanningConsentedConstructionBuiltMajor project with its own page
Projects
| Project | Capacity | Stage |
|---|---|---|
| Pembroke Power Station Hydro and pumped storage · RWE Generation UK Plc |
2.2 GW | |
| Dinorwig Hydro and pumped storage · First Hydro Company |
1.6 GW | |
| Cruachan U3&4 Replacement Hydro and pumped storage · Drax Pumped Storage Limited |
440 MW | |
| Ffestiniog Hydro and pumped storage · First Hydro Company |
360 MW | |
| Foyers Hydro and pumped storage · Sse Generation Limited |
300 MW | |
| Whitelee Extension Hydro and pumped storage · Scottish Power Renewables (UK) Limited |
238 MW | |
| Glendoe Hydro and pumped storage · Sse Generation Limited |
100 MW | |
| Sloy G2 and G3 Hydro and pumped storage · Sse Generation Limited |
80 MW | |
| Errochty Hydro and pumped storage · Sse Generation Limited |
75 MW | |
| Sloy G1 and G4 Hydro and pumped storage · Sse Generation Limited |
73 MW | |
| Clunie (part of the Clunie Cascade) Hydro and pumped storage · Sse Generation Limited |
61 MW | |
| Cwm Rheidol Hydro and pumped storage · Statkraft Energy Ltd. |
50 MW | |
| Fasnakyle G1 & G2 Hydro and pumped storage · Sse Generation Limited |
46 MW | |
| Lochay (Part of Killin Cascade Hydro Scheme) Hydro and pumped storage · Sse Generation Limited |
45 MW | |
| Glenmoriston (part of the Moriston Cascade) Hydro and pumped storage · Sse Generation Limited |
40 MW | |
| Dolgarrog Hydro and pumped storage · RWE Generation UK Plc |
39 MW | |
| Deanie (part of the Beauly Cascade) Hydro and pumped storage · Sse Generation Limited |
38 MW | |
| Luichart (part of the Conon Cascade) Hydro and pumped storage · Sse Generation Limited |
34 MW | |
| Fasnakyle G3 & G4 Hydro and pumped storage · Sse Generation Limited |
31 MW | |
| Maentwrog Hydro and pumped storage · Nuclear Decommissioning Authority |
30 MW | |
| Aigas (part of the Beauly Cascade) Hydro and pumped storage · Sse Generation Limited |
20 MW | |
| Ceannacroc (part of the Moriston Cascade) Hydro and pumped storage · Sse Generation Limited |
20 MW | |
| Invergarry (part of the Garry Cascade) Hydro and pumped storage · Sse Generation Limited |
20 MW | |
| Kilmorack (part of the Beauly Cascade) Hydro and pumped storage · Sse Generation Limited |
20 MW | |
| Culligran (part of the Beauly Cascade) Hydro and pumped storage · Sse Generation Limited |
19 MW | |
| Mossford (part of the Conon Cascade) Hydro and pumped storage · Sse Generation Limited |
19 MW | |
| Livishie (part of the Moriston Cascade) Hydro and pumped storage · Sse Generation Limited |
18 MW | |
| Orrin (part of the Conon Cascade) Hydro and pumped storage · Sse Generation Limited |
18 MW | |
| Quoich (part of the Garry Cascade) Hydro and pumped storage · Sse Generation Limited |
18 MW | |
| Finlarig Hydro and pumped storage · Sse Generation Limited |
17 MW | |
| Nant Hydro and pumped storage · Sse Generation Limited |
15 MW | |
| Pitlochry (part of the Clunie Cascade) Hydro and pumped storage · Sse Generation Limited |
15 MW | |
| Torr Achilty (part of the Conon Cascade) Hydro and pumped storage · Sse Generation Limited |
15 MW | |
| Cashlie (Part of Killin Cascade Hydro Scheme) Hydro and pumped storage · Sse Generation Limited |
11 MW | |
| Cwm Dyli Hydro and pumped storage · RWE Generation UK Plc |
10 MW | |
| Lubreoch Hydro (Part of Killin Cascade Hydro Scheme) Hydro and pumped storage · Sse Generation Limited |
4 MW |
Sources: NESO Transmission Entry Capacity (TEC) register and interconnector register (downloaded 8 November 2026); NESO Clean Power 2030 network map (existing and planned circuits, substations and network projects); National Grid Electricity Transmission overhead line routes. Contains data from NESO, licensed under the NESO Open Data Licence, and National Grid open data. Projects are placed at their connection substation, not the generating site; projects at new, unnamed “connection nodes” are listed but not mapped.