Rentel Export

OperationalOffshore GridBE309 MW220 kV44.4 km2018

Basic information

8 fields

Also Known As

Rentel export cable · Rentel–Zeebrugge export cable · Rentel–Stevin 220 kV export cable · Rentel radial export connection

Status

operational

Capacity

309 MW

Owners

Elia group100%

Project Company

Elia Transmission Belgium SA/NVSPV

Type

offshore grid

Transmission Model

Developer Build & Transfer

Website

elia.be

Supply Chain (1)

Project Timeline 11 events

2024Actual2 events

On 9 January 2024, one of the high‑voltage export cables linking the Rentel offshore platform to the mainland failed following an incident, taking that transmission path out of service. Thanks to the meshed Modular Offshore Grid (MOG), power from Rentel and the other connected wind farms could still be routed to shore via alternative cables, avoiding loss of overall generation despite the outage of this Rentel–mainland connection.

www.windgrid.com· 12 Sept 2024

Open event detail

2018Actual2 events

2017Actual2 events

2016Actual3 events

2014Actual1 event

Financial

5 fields

CAPEX

€1,100M

Price-base year

Oct 2016

Source

otary.be

Adjusted to 2026

€1,426M¹

Cost intensity (2026)

€103.94k per MW-km¹

Notes:

This is the total Rentel project investment (€1.1 billion) reported at financial close and includes the export cable to shore among other project elements (turbines, OTS, foundations, etc.). Sources do...

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

Cable Specifications(2 cables)

18 fields

Rentel Offshore Substation — Stevin Substation export cable

Zeebrugge, West Flanders, Belgium

1 × 220 kV HVAC · 1000 mm² 240 mm dia. · XLPE (Cross-linked Polyethylene) · 350 MVA · 40.3 km · 115 kg/m

System:1 × 220 kV HVAC

Construction:1000 mm² · 240 mm dia.

Insulation:XLPE (Cross-linked Polyethylene)

Power rating:350 MVA

Route length:40.3 km(40.3 subsea)

Weight:115 kg/m air

Burial depth:

Project and Elia documentation for the Belgian Modular Offshore Grid indicate the 220 kV submarine export cables (including the Rentel‑to‑Stevin export cable) are nominally buried to a depth of approximately...

Fibre optic:

Belgian offshore grid technical documentation and Elia project material state that the 220 kV submarine export cables are manufactured with integrated optical fibres. The available sources do not disclose the...

Rentel Offshore Substation — OSY1 Offshore Substation inter‑platform cable

Zeebrugge, West Flanders, Belgium

1 × 220 kV HVAC · 1000 mm² 240 mm dia. · XLPE (Cross-linked Polyethylene) · 390 MVA · 4.1 km · 115 kg/m

System:1 × 220 kV HVAC

Construction:1000 mm² · 240 mm dia.

Insulation:XLPE (Cross-linked Polyethylene)

Power rating:390 MVA

Route length:4.1 km(4.1 subsea · 0 land)

Weight:115 kg/m air

Burial depth:

Belgian regulatory and project documentation for the MOG and associated 220 kV export/inter‑platform HVAC cables specifies that subsea cables are nominally buried at a depth of about 1–3 m for...

Fibre optic:

The 220 kV submarine HVAC cable systems deployed for the Belgian offshore grid (including MOG-related cables) include integrated optical fibre(s) within the same cable design (XLPE‑insulated 3‑phase submarine cables with...