Grid infrastructure › Connection queue › Hydro and pumped storage
HYDRO AND PUMPED STORAGE · SPTCruachan Expansion
Cruachan Expansion is a 600 MW hydro and pumped storage project in planning, connecting to the SP Transmission (south Scotland) network at Cruachan 275kV Substation, with capacity due from October 2030. The connection agreement is held by Drax Cruachan Expansion Limited.
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Oct 2030 (not yet reached)
- Closed (not yet reached)
Scoping and awaiting consents are both shown as planning. A connection agreement does not mean the project will be built: many queue projects never reach construction.
Connection details
- NESO project number
- PRO-001889
- Customer
- Drax Cruachan Expansion Limited
- Technology
- Pump Storage
- Total capacity
- 600 MW
- Change in this agreement
- +600 MW
- Capacity effective from
- 31 October 2030
- Connection site
- Cruachan 275kV Substation
- Transmission owner
- SP Transmission (south Scotland)
- Connection type
- Direct connection to the transmission network
- NESO project status
- Scoping
Connection site
The marker shows the connection substation, not the project itself, with the transmission network around it.
Other projects at Cruachan 275kV Substation
Source: NESO Transmission Entry Capacity (TEC) register, downloaded 8 November 2026. Contains data from NESO, licensed under the NESO Open Data Licence. Report a problem