Ostwind 1

Offshore GridOperationalDE750 MW220 kV279 km

Basic Information

Also known as:Ostwind 1 grid connection system, OST-1-1, OST-1-2, OST-1-3

Status:Operational

Capacity:750 MW

Transmission Model:TSO Build & Own

Owners:

50Hertz Transmission GmbH(100%)

Project Company:

50Hertz Transmission GmbH

Type:offshore grid

Website:www.50hertz.com

Description:

Ostwind 1 is a 50Hertz Transmission GmbH-owned HVAC offshore grid connection that collects and exports power from the Westlich Adlergrund cluster in the German Baltic Sea. The system links the Wikinger (350 MW) and Arkona (385 MW) offshore wind farms via three 220 kV, 250 MW-class submarine cable systems (total...

Supply Chain (0)

Project Timeline (0)

No lifecycle events recorded yet.

Route

	Westlich Adlergrund (Baltic Sea)	Mecklenburg-Western Pomerania
Landfall	N/A	Lubmin, Mecklenburg-Western Pomerania, Germany
Grid Connection	—	Lubmin substation

Westlich Adlergrund (Baltic Sea)

Landfall:N/A

Grid:—

Mecklenburg-Western Pomerania

Landfall:Lubmin, Mecklenburg-Western Pomerania, Germany

Grid:Lubmin substation

Financial

€1,500M€1,928.1M adj.€9.21k/MW-km

www.50hertz.com (Sept 2016)

CAPEX:€1,500M

Adjusted to 2025¹:€1,928.1M

Cost Intensity¹:€9.21k per MW-km

Estimate Date:Sept 2016

Source:www.50hertz.com

Notes:

50Hertz project factsheet lists total project costs as €1.5 billion (covers Ostwind 1 transmission assets: three 220 kV AC cable systems, offshore platforms and onshore works).

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

Cable Specifications

Ostwind 1 – Wikinger export cable (OST-1-1)

Lubmin, Mecklenburg-Western Pomerania, Germany

1 × 220 kV HVAC · 1200 mm² · 250 MVA · 93 km

System:1 × 220 kV HVAC

Construction:1200 mm²

Power rating:250 MVA

Route length:93 km(90 subsea · 3 land)

Burial depth:

Route-specific burial/ protection measures vary with seabed geology along the Westlich Adlergrund–Lubmin corridor. 50Hertz planning and environmental documents for the Ostwind projects describe using seabed-friendly burial techniques where possible (flushing...

Ostwind 1 – Arkona export cable (OST-1-2)

Lubmin, Mecklenburg-Western Pomerania, Germany

1 × 220 kV HVAC · 1200 mm² · 250 MVA · 93 km

System:1 × 220 kV HVAC

Construction:1200 mm²

Power rating:250 MVA

Route length:93 km(90 subsea · 3 land)

Burial depth:

Project documentation and permitting describe conventional subsea cable protection and burial measures rather than a single fixed burial depth for Ostwind 1. The route crosses variable glacial seabed types (silt,...

Ostwind 1 – Shared export cable (OST-1-3)

Lubmin, Mecklenburg-Western Pomerania, Germany

1 × 220 kV HVAC · 1200 mm² · 250 MVA · 93 km

System:1 × 220 kV HVAC

Construction:1200 mm²

Power rating:250 MVA

Route length:93 km(90 subsea · 3 land)

Burial depth:

No single nominal burial depth is specified in the cited project documents. 50Hertz documents and project materials describe use of environment‑sensitive cable installation methods: submarine export cables are generally ploughed...