DolWin2

Offshore GridOperationalDE916 MW320 kV171 km

Basic Information

Also known as:NOR-3-1, HVDC DolWin2, DolWin beta

Status:Operational

Capacity:916 MW

Transmission Model:TSO Build & Own

Owners:

TenneT(51%)

Copenhagen Infrastructure Partners (CI Artemis II / CI Artemis II K/S)(24.99%)

Chubu Electric Power Co., Inc.(12.25%)

Mitsubishi UFJ Lease & Finance Co. Ltd. (MUL)(11.76%)

Project Company:

TenneT Offshore 9. Beteiligungsgesellschaft mbH

Type:offshore grid

Expected Life:36 years

Website:www.tennet.eu

Description:

DolWin2 is a TenneT-operated HVDC offshore grid connection that collects power from the DolWin cluster (notably Gode Wind I, Gode Wind II and Nordsee One) and transmits it to the German mainland. The link uses VSC (HVDC Light) technology at ±320 kV and has an installed transmission capacity of approximately...

Supply Chain (0)

Project Timeline (0)

No lifecycle events recorded yet.

	German Bight (North Sea)	Emsland, Lower Saxony
Landfall	N/A	—
Grid Connection	—	Dörpen West substation

Financial

€1,000M€1,259M adj.€8.04k/MW-km

www.promotion-offshore.net (Aug 2011)

CAPEX:€1,000M

Adjusted to 2025¹:€1,259M

Cost Intensity¹:€8.04k per MW-km

Estimate Date:Aug 2011

Source:www.promotion-offshore.net

Notes:

Reported contract/order value for ABB turnkey scope ~1 billion (reported in sources as €1 billion and elsewhere as ~$1 billion). Likely refers to the ABB contract award for delivery of...

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

Cable Specifications

DolWin2 HVDC export link (DolWin beta – Dörpen West Converter Station)

2 × 320 kV HVDC · symmetric monopole · balanced · XLPE (Cross-linked Polyethylene) · 916 MVA · 135 km

System:2 × 320 kV HVDC · symmetric monopole

Return path:balanced

Insulation:XLPE (Cross-linked Polyethylene)

Power rating:916 MVA

Route length:135 km(45 subsea · 90 land)

Fibre optic:

Project documentation for the DolWin2 route references 'Steuerkabel mit Lichtwellenleiter (See- und Landkabel)' — i.e. control/telemetry cables with optical fiber are provided in the sea (subsea) and land cable sections...

Gode Wind I – DolWin beta AC link

2 × 155 kV HVAC · 916 MVA · 12 km

System:2 × 155 kV HVAC

Power rating:916 MVA

Route length:12 km(12 subsea · 0 land)

Fibre optic:

Project documentation and permitting materials for DolWin2 indicate the presence of control/steering cables incorporating optical fibres: German planning text lists “Steuerkabel mit Lichtwellenleiter (See- und Landkabel)” (control cable with optical...

Gode Wind II – DolWin beta AC link

Dörpen, Emsland, Germany

2 × 155 kV HVAC · 12 km

System:2 × 155 kV HVAC

Route length:12 km(12 subsea · 0 land)

Fibre optic:

Project documentation for the DolWin2 connection indicates that control/communication fibre optics are provided with the sea and land cables (described as “Steuerkabel mit Lichtwellenleiter (See- und Landkabel)”). The sources do...

Nordsee One – DolWin beta AC link

2 × 155 kV HVAC · 12 km

System:2 × 155 kV HVAC

Route length:12 km(12 subsea · 0 land)

Fibre optic:

Project documentation for the DolWin2 connection indicates that the sea and land cable systems include control/communications cables with optical fibres (i.e., Steuerkabel / lightwave-fibre in sea and land cables) for...