Normandie 1 (N1)

Island LinkOperational

100 MW90 kV27 km

Basic Information

Also known as:Normandie 1, N1, N1 cable, Normandy 1

Status:Operational

Capacity:100 MW

Owners:

Jersey Electricity plc(50%)

Guernsey Electricity (GEL)(50%)

Project Company:

Channel Islands Electricity Grid (CIEG)

Type:island link

Website:www.jec.co.uk

Description:

Normandie 1 (N1) is a 100 MW subsea HVAC supply cable commissioned in 2016 that links Surville in Normandy (France) to Archirondel on Jersey (Channel Islands). Delivered by Jersey Electricity in partnership with Guernsey Electricity under the oversight of the Channel Islands Electricity Grid (CIEG), N1 was installed along the...

Supply Chain (4)

Project Timeline (2)

9 Aug 2016Cable Installation Start

On 9 August 2016, installation of the Normandie 1 (N1) 27 km subsea power cable from Surville, Normandy to Archirondel, Jersey began in earnest, as the cable-laying vessel Stemat Spirit approached the French beach, set up on anchors, and commenced the operation to pull the cable ashore before continuing the offshore laying towards Jersey.

May 2015Planning Consent Awarded

Licence: Planning permissions for Normandie 1 subsea cable

Planning permissions for the new subsea interconnector cable Normandie 1 (N1), an additional link to France replacing the EDF1 cable, were granted in May 2015 as part of ongoing investment in the Channel Islands subsea cable network.

Route

	Normandy	Jersey
Landfall	Surville (Surville beach), Normandy, France	Archirondel / St Catherine's Bay, Jersey
Grid Connection	St Remy des Landes substation (RTE joint bay / Poste de Surville)	Archirondel Termination Station (Archirondel substation)

Normandy

Landfall:Surville (Surville beach), Normandy, France

Grid:St Remy des Landes substation (RTE joint bay / Poste de Surville)

Jersey

Landfall:Archirondel / St Catherine's Bay, Jersey

Grid:Archirondel Termination Station (Archirondel substation)

LandfallCable Route

Financial

£30M€47.8M adj.€17.7k/MW-km

www.jec.co.uk (Dec 2016)

CAPEX:£30M

Adjusted to 2025¹:€47.8M

Cost Intensity¹:€17.7k per MW-km

Estimate Date:Dec 2016

Source:www.jec.co.uk

Notes:

Jersey Electricity reports the project cost as “around £30m” (shared with Guernsey Electricity). Other contemporaneous sources reported figures of c.£35m and £40m; those are likely early/press figures — the official...

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

Cable Specifications

Normandie 1 (N1) Cable

Surville (Surville beach), Normandy, France → Archirondel / St Catherine's Bay, Jersey

1 × 90 kV HVAC · XLPE (Cross-linked Polyethylene) · 100 MVA · 27 km

System:1 × 90 kV HVAC

Insulation:XLPE (Cross-linked Polyethylene)

Power rating:100 MVA

Route length:27 km(27 subsea · 2 land)

Burial depth:

The Normandie 1 cable was largely laid on the seabed (i.e. not continuously ploughed/buried along the entire route). Selective burial and shore approach protection were used: a Sea Trench operation...

Fibre optic:

Normandie 1 contains embedded fibre‑optic cable(s) incorporated within the power cable assembly. Source reports describe the cable as having embedded fibre optics protected alongside the power cores by a double...

Collector Stations

Poste de Surville

St Remy des Landes (Poste de Surville), Normandy, France, France

100 MW 90 kV · onshore

Rating:100 MW · 90 kV

Location:onshore

Archirondel Substation

Archirondel, Jersey, JE

100 MW 90 kV · onshore

Rating:100 MW · 90 kV

Location:onshore