Hollandse Kust Zuid Alpha

Offshore GridOperationalNL700 MW220 kV

Basic Information

Also known as:Hollandse Kust Zuid Alpha offshore grid, Hollandse Kust (zuid) alpha, HKZ Alpha

Status:Operational

Capacity:700 MW

Transmission Model:TSO Build & Own

Owners:

TenneT(100%)

Project Company:

TenneT

Type:offshore grid

Website:www.netopzee.eu

Description:

Hollandse Kust (zuid) Alpha is a TenneT-developed high-voltage alternating current (HVAC) offshore grid connection platform built to collect and transmit power from the Hollandse Kust Zuid I & II wind farms to the Dutch onshore grid. The Alpha installation comprises a single offshore transformer platform that steps up infield 66...

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System Topology

ExportInter Platform

React Flow

Route

	North Sea	South Holland (Zuid-Holland)
Landfall	N/A	Maasvlakte, South Holland, Netherlands
Grid Connection	—	Maasvlakte 380 kV substation (De Maasvlakte)

North Sea

Landfall:N/A

Grid:—

South Holland (Zuid-Holland)

Landfall:Maasvlakte, South Holland, Netherlands

Grid:Maasvlakte 380 kV substation (De Maasvlakte)

Cable Specifications

Hollandse Kust (zuid) Alpha — Maasvlakte export cable system

Maasvlakte, South Holland, Netherlands

2 × 220 kV HVAC · aluminium 300 mm dia. · 350 MVA · 100 kg/m

System:2 × 220 kV HVAC

Construction:aluminium · 300 mm dia.

Power rating:350 MVA

Weight:100 kg/m air

Burial depth:

Burial depth and protection vary along the route. Nearshore and in the busy Maasmond crossing the project used deep trenching (reported target of ~5.5 m burial for the first ~10...

Hollandse Kust (zuid) Alpha — Hollandse Kust (zuid) Beta inter-platform cable

1 × 220 kV HVAC · aluminium 300 mm dia. · 350 MVA · 100 kg/m

System:1 × 220 kV HVAC

Construction:aluminium · 300 mm dia.

Power rating:350 MVA

Weight:100 kg/m air

Collector Stations

Hollandse Kust (zuid) Alpha

Hollandse Kust (zuid) Alpha offshore platform, Netherlands

700 MW 220 kV · offshore

Rating:700 MW · 220 kV

Location:offshore

Maasvlakte 380 kV substation

Maasvlakte (Maasvlakte 380 kV substation), Netherlands

700 MW 380 kV · onshore

Rating:700 MW · 380 kV

Location:onshore