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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 shown87.0 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

8 projects
ProjectCapacityStageConnection siteFrom
Glen Earrach PSH
Hydro and pumped storage Β· Glen Earrach Energy Limited
1.8 GWScoping Glen Earrach PSH 400kV substation
SSEN Transmission (north Scotland)
Oct 2035
Fearna PSH 2
Hydro and pumped storage Β· Fearna Psh Limited
1.5 GWAwaiting Consents Fearna Pump Storage Hydro 2 400/15kV Substation
SSEN Transmission (north Scotland)
Nov 2036
Coire Glas Pumped Storage
Hydro and pumped storage Β· Coire Glas Hydro Pumped Storage Limited
1.3 GWScoping Coire Glas GSP
SSEN Transmission (north Scotland)
Oct 2029
Balliemeanoch PSH
Hydro and pumped storage Β· ILI (Borders PSH) Ltd
900 MWScoping Balliemeanoch 275kV Substation
SSEN Transmission (north Scotland)
Oct 2034
Loch Kemp PSH
Hydro and pumped storage Β· Loch Kemp Storage Limited
660 MWScoping Loch Kemp 275kV Switching Station
SSEN Transmission (north Scotland)
Oct 2030
Longhaven Energy Storage Centre
Hydro and pumped storage Β· Hydrostor UK Ltd
500 MWScoping New North East Substation 400kV Substation
SSEN Transmission (north Scotland)
Oct 2037
Loch Fearna Pumped Storage
Hydro and pumped storage Β· Fearna Psh Limited
300 MWAwaiting Consents Loch Fearna Pumped Storage 400/18kV Substation
SSEN Transmission (north Scotland)
Oct 2032
Finlarig
Hydro and pumped storage Β· Sse Generation Limited
35 MWScoping Killin 132/11kV Substation
SSEN Transmission (north Scotland)
Nov 2031

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.