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Transmission / Projects / North Scotland

Loch na Cathrach Pumped Storage Hydro

STATKRAFT HIGHLANDS PSH LIMITED at Knocknagael 275kV

Connection date
30 Apr 2029
Gate
Not stated
Status
Consents Approved
Technology
Pumped storage
Total capacity
550 MW
Connected now
0 MW
Still to connect
550 MW
Transmission owner
SSEN Transmission (SHET)
Agreement type
Direct Connection
Region
North Scotland
Project number
PRO-000570
In the register since
January 2021 or earlier

Stages

StageConnected MWAdds MWCumulative MWDateGateStatus
1045045030 Apr 2029Not statedConsents Approved
2010055031 Oct 2030Not statedConsents Approved

Change history

Every change to this project across 151 registers from 29 Jan 2021 to 5 Nov 2026.

  • 19 Dec 2025 register
    Connection point changed from Red John 275kV Switching Station to Knocknagael 275kV
  • 30 May 2025 register
    Stage 1: Connection date moved from 31 Jul 2028 to 30 Apr 2029 (+9 months)
  • 30 May 2025 register
    Stage 2: Connection date moved from 31 Oct 2032 to 31 Oct 2030 (−24 months)
  • 28 Mar 2025 register
    Renamed from Red John PSH
  • 28 Mar 2025 register
    Stage 1: Status changed from Scoping to Consents Approved
  • 28 Mar 2025 register
    Stage 2: Status changed from Scoping to Consents Approved
  • 29 Oct 2024 register
    New stage added (100 MW from 31 Oct 2032)
  • 28 Jun 2024 register
    Customer changed from ILI (HIGHLANDS PSH) LIMITED to STATKRAFT HIGHLANDS PSH LIMITED
  • 29 Sep 2023 register
    Connection date moved from 31 Jul 2027 to 31 Jul 2028 (+12 months)

Also at Knocknagael 275kV

Substation view

No other projects in the register at this connection point.

Status definitions (NESO)

Scoping: NESO is not aware that a planning application has been made.

Awaiting Consents: NESO is aware, or the customer has told it, that a planning application has been made.

Consents Approved: NESO is aware, or the customer has told it, that the planning application has been approved.

Terminated: used by NESO only in its register of 30 April 2021, for two projects that left the register the next month.

These statuses are NESO’s, not QueueWatch’s, and NESO describes them as “as far as we are aware”, so a project may be further along than its status shows.

Source: NESO