Walney 1 OFTO

Offshore GridOperationalGB184 MW132 kV48 km

Basic Information

Also known as:Walney I OFTO, Blue Transmission Walney 1 OFTO, Walney 1 Offshore Transmission Assets, Ofgem TR1 Walney 1 OFTO

Status:Operational

Capacity:184 MW

Transmission Model:Developer Build & Transfer

Owners:

DTUK BLK Bidco Holdings Limited (ultimate controller BlackRock)(50%)

Alba Infra Founding Partners SAS(50%)

Project Company:

Blue Transmission Walney 1 Limited

Type:offshore grid

Expected Life:20 years

Website:www.bluetransmission.com

Description:

Walney 1 OFTO is the 132 kV HVAC offshore transmission link that connects the 184 MW Walney 1 offshore wind farm in the Irish Sea to the onshore GB transmission network. The link comprises an offshore substation platform located roughly 15 km from Walney Island (18 km from Barrow-in-Furness), a...

Supply Chain (0)

Project Timeline (0)

No lifecycle events recorded yet.

Route

	Irish Sea	Cumbria
Landfall	N/A	Heysham, Lancashire, United Kingdom
Grid Connection	—	Heysham 400/132 kV substation

Irish Sea

Landfall:N/A

Grid:—

Cumbria

Landfall:Heysham, Lancashire, United Kingdom

Grid:Heysham 400/132 kV substation

Financial

£105.4M€177.3M adj.€20.07k/MW-km

www.ofgem.gov.uk (Oct 2011)

CAPEX:£105.4M

Adjusted to 2025¹:€177.3M

Cost Intensity¹:€20.07k per MW-km

Estimate Date:Oct 2011

Source:www.ofgem.gov.uk

Notes:

OFTO transfer value / purchase price for Walney 1 transmission link (licence grant and purchase from developer).

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

Cable Specifications

Walney 1 export cable

Heysham, Lancashire, United Kingdom

1 × 132 kV HVAC · 184 MVA · 48 km

System:1 × 132 kV HVAC

Power rating:184 MVA

Route length:48 km(45.3 subsea · 2.7 land)

Collector Stations

Offshore Platform (GB)

Walney 1 Offshore Wind Farm, United Kingdom

184 MW 132 kV · offshore

Rating:184 MW · 132 kV

Location:offshore

Heysham Substation

Heysham, United Kingdom

184 MW 132 kV · onshore

Rating:184 MW · 132 kV

Location:onshore