Triton Knoll OFTO

Offshore GridOperationalGB857 MW220 kV214 km

Basic Information

Also known as:Triton Knoll Offshore Transmission Owner, Triton Knoll OFTO Limited, Triton Knoll offshore electricity transmission project, Triton Knoll OFTO TR7

Status:Operational

Capacity:857 MW

Transmission Model:Developer Build & Transfer

Owners:

Equitix (managed funds)(80%)

TEPCO Power Grid(20%)

Project Company:

Triton Knoll OFTO Limited

Type:offshore grid

Expected Life:23 years

Website:tkofto.co.uk

Description:

Triton Knoll OFTO is the offshore electricity transmission system that connects the 857 MW Triton Knoll offshore wind farm to the onshore National Grid at Bicker Fen, Lincolnshire. The link is an HVAC transmission system comprising two 66/220 kV offshore substation platforms (East and West), two 220 kV subsea export...

Supply Chain (0)

Project Timeline (0)

No lifecycle events recorded yet.

Route

	Greater Wash (North Sea)	Greater Wash (North Sea)	Lincolnshire
Landfall	N/A	N/A	—
Grid Connection	—	—	Bicker Fen (National Grid) substation

Greater Wash (North Sea)

Landfall:N/A

Grid:—

Greater Wash (North Sea)

Landfall:N/A

Grid:—

Lincolnshire

Landfall:—

Grid:Bicker Fen (National Grid) substation

Financial

£583.704M€719.7M adj.€3.92k/MW-km

www.ofgem.gov.uk (Dec 2023)

CAPEX:£583.704M

Adjusted to 2025¹:€719.7M

Cost Intensity¹:€3.92k per MW-km

Estimate Date:Dec 2023

Source:www.ofgem.gov.uk

Notes:

OFTO transmission asset capital cost per Ofgem/Grant Thornton ex‑ante review: capital costs £583,704,069 (interest during construction £17,039,193 gives total £600,743,261). Transfer/sale of assets completed 2023-12-05.

¹ Cost inflated in local currency then converted to euros (where applicable).

Cable Specifications

Export cable circuit — Offshore Platform (GB 1) to Onshore Substation (GB)

Anderby Creek, Lincolnshire, United Kingdom

1 × 220 kV HVAC · 420 MVA · 107 km

System:1 × 220 kV HVAC

Power rating:420 MVA

Route length:107 km(50 subsea · 57 land)

Burial depth:

No specific numeric burial-depth targets or a continuous range are stated in the cited project and regulatory documents. Source material describes the export circuits as 220 kV subsea export cables...

Fibre optic:

Project and regulatory documents explicitly state the export cable circuits include associated fibre optics (e.g. 'export cables (with associated fibre optics)'). The fibre is referenced in the context of communications/SCADA...

Export cable circuit — Offshore Platform (GB 2) to Onshore Substation (GB)

Anderby Creek, Lincolnshire, United Kingdom

1 × 220 kV HVAC · 420 MVA · 107 km

System:1 × 220 kV HVAC

Power rating:420 MVA

Route length:107 km(50 subsea · 57 land)

Burial depth:

Sources do not publish a target or actual burial depth for the Triton Knoll 220 kV export cables. Project and regulatory documents describe the route as two 220 kV submarine...

Fibre optic:

Developer and Ofgem documents state the export cable circuits include associated fibre optics (i.e., the subsea and onshore export cables are described 'with associated fibre optics' and each circuit includes...

Collector Stations

Offshore Platform (GB 1)

Triton Knoll (Greater Wash, North Sea), United Kingdom

420 MW 220 kV · offshore

Rating:420 MW · 220 kV

Location:offshore

Offshore Platform (GB 2)

Triton Knoll Offshore Substation Platform (Triton Knoll, Greater Wash), United Kingdom

220 kV · offshore

Rating:220 kV

Location:offshore

Onshore Substation (GB)

Bicker Fen, Lincolnshire, United Kingdom

857 MW 400 kV · onshore

Rating:857 MW · 400 kV

Location:onshore