Gemini Export Cables

Offshore GridOperationalNL600 MW220 kV170 km

Basic Information

Also known as:Gemini 220 kV export cables

Status:Operational

Capacity:600 MW

Transmission Model:Developer Full

Owners:

Northland Power(60%)

Siemens Financial Services(20%)

HVC Groep(10%)

Alte Leipziger‑Hallesche(10%)

Type:offshore grid

Expected Life:20 years

Website:www.geminiwindpark.nl

Description:

The Gemini export cable system is the HVAC export transmission link that carries electricity from the 600 MW Gemini offshore wind farm (two sites: Buitengaats and ZeeEnergie; 150 x Siemens SWT‑4.0‑130 turbines) to the Dutch onshore grid. The system comprises two parallel 220 kV AC export cable circuits (each associated...

Supply Chain (0)

Project Timeline (0)

No lifecycle events recorded yet.

Route

	North Sea (Dutch sector)	North Sea	Groningen
Landfall	N/A	N/A	—
Grid Connection	—	—	Eemshaven onshore 380 kV TenneT substation

North Sea (Dutch sector)

Landfall:N/A

Grid:—

North Sea

Landfall:N/A

Grid:—

Groningen

Landfall:—

Grid:Eemshaven onshore 380 kV TenneT substation

Financial

€165M€199.2M adj.€1.95k/MW-km

www.energymonitor.ai (May 2014)

CAPEX:€165M

Adjusted to 2025¹:€199.2M

Cost Intensity¹:€1.95k per MW-km

Estimate Date:May 2014

Source:www.energymonitor.ai

Notes:

Reported cable supply contract awarded to NKT Cables (May 2014) for the export/transport cables — supply/manufacture value; installation/EPC works were covered under a separate Van Oord EPC package (~€1.3bn) which...

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

Cable Specifications

ZeeEnergie — Eemshaven export cable

Eemshaven, Groningen, Netherlands

1 × 220 kV HVAC · aluminium 1200 mm² 252 mm dia. · 300 MVA · 85 km · 95 kg/m

System:1 × 220 kV HVAC

Construction:aluminium · 1200 mm² · 252 mm dia.

Power rating:300 MVA

Route length:85 km(85 subsea)

Weight:95 kg/m air

Burial depth:

Target burial to ~1.5 m where feasible; actual burial varies along the route with shallower depths in very shallow/tidal flats and deeper trenching where possible. Nearshore/shallow-water sections were installed with...

Fibre optic:

The export cable includes dedicated optical fibres: source documentation lists LWL 2x48 (two fibre bundles of 48 fibres each) incorporated into the cable for communications/control and telemetry. No public evidence...

Offshore Platform (NL 1) (Buitengaats) — Eemshaven export cable

Eemshaven, Groningen, Netherlands

1 × 220 kV HVAC · aluminium 1200 mm² 252 mm dia. · 300 MVA · 85 km · 95 kg/m

System:1 × 220 kV HVAC

Construction:aluminium · 1200 mm² · 252 mm dia.

Power rating:300 MVA

Route length:85 km(85 subsea)

Weight:95 kg/m air

Burial depth:

Fibre optic:

Collector Stations

Offshore Platform (NL 1)

Buitengaats (Gemini offshore substation), Netherlands

300 MW 220 kV · offshore

Rating:300 MW · 220 kV

Location:offshore

ZeeEnergie

ZeeEnergie, Netherlands

300 MW 220 kV · offshore

Rating:300 MW · 220 kV

Location:offshore

Land High Voltage Station (Eemshaven)

Eemshaven, Groningen, Netherlands, Netherlands

600 MW 380 kV · onshore

Rating:600 MW · 380 kV

Location:onshore

Gemini Export Cables

System Topology