πŸ”Œ EV Partnership Switch to Octopus Energy & unlock exclusive smart EV charging rates Find out more β†’ Skip to main content

Home β€Ί Grid infrastructure β€Ί Connection queue

NESO TEC REGISTER Β· GREAT BRITAIN

Hydro and pumped storage projects in the connection queue on the SSEN Transmission (north Scotland) network

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.

Projects shown271.2 GW in total
In planning8scoping or awaiting consent
Consented or building7closest to connecting
Built27connected and operating

Map

Loading projects…

Voltage400 kV275 kV132 kVHVDCNew HVAC

ProjectsPlanningConsentedConstructionBuiltMajor project with its own page

Projects

27 projects
ProjectCapacityStageConnection siteFrom
Foyers
Hydro and pumped storage Β· Sse Generation Limited
300 MWBuilt Foyers 275kV Substation
SSEN Transmission (north Scotland)
Glendoe
Hydro and pumped storage Β· Sse Generation Limited
100 MWBuilt Fort Augustus GSP
SSEN Transmission (north Scotland)
Sloy G2 and G3
Hydro and pumped storage Β· Sse Generation Limited
80 MWBuilt Sloy GSP
SSEN Transmission (north Scotland)
Errochty
Hydro and pumped storage Β· Sse Generation Limited
75 MWBuilt Errochty 132kV Substation
SSEN Transmission (north Scotland)
Sloy G1 and G4
Hydro and pumped storage Β· Sse Generation Limited
73 MWBuilt Sloy GSP
SSEN Transmission (north Scotland)
Clunie (part of the Clunie Cascade)
Hydro and pumped storage Β· Sse Generation Limited
61 MWBuilt Clunie GSP
SSEN Transmission (north Scotland)
Fasnakyle G1 & G2
Hydro and pumped storage Β· Sse Generation Limited
46 MWBuilt Fasnakyle GSP
SSEN Transmission (north Scotland)
Lochay (Part of Killin Cascade Hydro Scheme)
Hydro and pumped storage Β· Sse Generation Limited
45 MWBuilt Lochay 132/11kV Substation
SSEN Transmission (north Scotland)
Glenmoriston (part of the Moriston Cascade)
Hydro and pumped storage Β· Sse Generation Limited
40 MWBuilt Glenmoriston GSP
SSEN Transmission (north Scotland)
Deanie (part of the Beauly Cascade)
Hydro and pumped storage Β· Sse Generation Limited
38 MWBuilt Deanie GSP
SSEN Transmission (north Scotland)
Luichart (part of the Conon Cascade)
Hydro and pumped storage Β· Sse Generation Limited
34 MWBuilt Luichart GSP
SSEN Transmission (north Scotland)
Fasnakyle G3 & G4
Hydro and pumped storage Β· Sse Generation Limited
31 MWBuilt Fasnakyle GSP
SSEN Transmission (north Scotland)
Aigas (part of the Beauly Cascade)
Hydro and pumped storage Β· Sse Generation Limited
20 MWBuilt Aigas Hydro 132kV Substation
SSEN Transmission (north Scotland)
Ceannacroc (part of the Moriston Cascade)
Hydro and pumped storage Β· Sse Generation Limited
20 MWBuilt Ceannacroc GSP
SSEN Transmission (north Scotland)
Invergarry (part of the Garry Cascade)
Hydro and pumped storage Β· Sse Generation Limited
20 MWBuilt Invergarry 132kV Substation
SSEN Transmission (north Scotland)
Kilmorack (part of the Beauly Cascade)
Hydro and pumped storage Β· Sse Generation Limited
20 MWBuilt Kilmorack GSP
SSEN Transmission (north Scotland)
Culligran (part of the Beauly Cascade)
Hydro and pumped storage Β· Sse Generation Limited
19 MWBuilt Culligran GSP
SSEN Transmission (north Scotland)
Mossford (part of the Conon Cascade)
Hydro and pumped storage Β· Sse Generation Limited
19 MWBuilt Mossford GSP
SSEN Transmission (north Scotland)
Livishie (part of the Moriston Cascade)
Hydro and pumped storage Β· Sse Generation Limited
18 MWBuilt Glenmoriston GSP
SSEN Transmission (north Scotland)
Orrin (part of the Conon Cascade)
Hydro and pumped storage Β· Sse Generation Limited
18 MWBuilt Orrin GSP
SSEN Transmission (north Scotland)
Quoich (part of the Garry Cascade)
Hydro and pumped storage Β· Sse Generation Limited
18 MWBuilt Quoich GSP
SSEN Transmission (north Scotland)
Finlarig
Hydro and pumped storage Β· Sse Generation Limited
17 MWBuilt Killin 132/11kV Substation
SSEN Transmission (north Scotland)
Nant
Hydro and pumped storage Β· Sse Generation Limited
15 MWBuilt Nant 132kV Substation
SSEN Transmission (north Scotland)
Pitlochry (part of the Clunie Cascade)
Hydro and pumped storage Β· Sse Generation Limited
15 MWBuilt Pitlochry (Clunie Cascade Hydro Scheme)
SSEN Transmission (north Scotland)
Torr Achilty (part of the Conon Cascade)
Hydro and pumped storage Β· Sse Generation Limited
15 MWBuilt Torr Achilty (Conan Cascade Hydro Scheme)
SSEN Transmission (north Scotland)
Cashlie (Part of Killin Cascade Hydro Scheme)
Hydro and pumped storage Β· Sse Generation Limited
11 MWBuilt Cashlie GSP
SSEN Transmission (north Scotland)
Lubreoch Hydro (Part of Killin Cascade Hydro Scheme)
Hydro and pumped storage Β· Sse Generation Limited
4 MWBuilt Killin GSP
SSEN Transmission (north Scotland)

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 β€œconnection nodes” are listed but not mapped.