Grid infrastructure βΊ Connection queue βΊ Solar
SOLAR Β· SPTCastlemilk 1
Castlemilk 1 is a 300 MW solar project in planning, connecting to the SP Transmission (south Scotland) network at Castlemilk 400kV Substation, with capacity due from October 2036. The connection agreement is held by Queequeg Renewables Ltd.
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Oct 2036 (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-003932
- Customer
- Queequeg Renewables Ltd
- Technology
- PV Array (Photo Voltaic/solar)
- Total capacity
- 300 MW
- Change in this agreement
- +300 MW
- Capacity effective from
- 31 October 2036
- Connection site
- Castlemilk 400kV 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 place the connection site is named after, not the project itself, with the transmission network around it.
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