Hollandse Kust West Alpha

Offshore GridOperationalNL700 MW220 kV62 km

Basic Information

Also known as:Hollandse Kust (west Alpha), HKW Alpha, HKW VI grid connection

Status:Operational

Capacity:700 MW

Transmission Model:TSO Build & Own

Owners:

TenneT(100%)

Project Company:

TenneT (TenneT TSO / TenneT TSO B.V.)

Type:offshore grid

Website:www.smulders.com

Description:

Hollandse Kust (west) Alpha is the TenneT-built offshore HVAC grid connection platform that collects and exports power from the Hollandse Kust (west) wind zone (Site VI / Ecowende) to the Dutch onshore transmission network. The system follows TenneT’s standard 700 MW AC platform concept: a single offshore transformer platform (’socket...

Supply Chain (0)

Project Timeline (0)

No lifecycle events recorded yet.

System Topology

ExportInter Platform

React Flow

Route

	North Sea	Noord-Holland
Landfall	N/A	Wijk aan Zee, North Holland, Netherlands
Grid Connection	—	Beverwijk high-voltage substation (A9, Beverwijk)

North Sea

Landfall:N/A

Grid:—

Noord-Holland

Landfall:Wijk aan Zee, North Holland, Netherlands

Grid:Beverwijk high-voltage substation (A9, Beverwijk)

Cable Specifications

Hollandse Kust (west) Alpha — export cable system to Zeestraat (Wijk aan Zee)

Wijk aan Zee, North Holland, Netherlands

2 × 220 kV HVAC · 700 MVA · 53 km

System:2 × 220 kV HVAC

Power rating:700 MVA

Route length:53 km(53 subsea)

Burial depth:

Landfall and nearshore: the export cables are brought ashore via drilled conduits/HDD under the dunes and pulled into installed sleeves (onshore work sites behind the dunes), after which onshore cable-pulling...

Hollandse Kust (west) Alpha–Beta 66 kV interconnector

66 kV MVAC · 9 km

System:66 kV MVAC

Route length:9 km(9 subsea · 0 land)

Collector Stations

Hollandse Kust (west) Alpha Offshore Substation

Hollandse Kust (west) Alpha offshore platform (North Sea, ~50 km off Egmond aan Zee), Netherlands

700 MW 220 kV · offshore

Rating:700 MW · 220 kV

Location:offshore

Zeestraat transformer station (Wijk aan Zee)

Zeestraat transformer station, Wijk aan Zee, Netherlands

700 MW 220 kV · onshore

Rating:700 MW · 220 kV

Location:onshore