Interconnectors and transmission assets

Connection to the power grid is a vital part of offshore renewable development. Interconnection takes a big step further, offering the potential for cross-boundary energy sharing.

Interconnectors and Offshore Hybrid Assets (OHAs) allow for the trading and sharing of power between countries, as well as managing high demand. Connections could happen between clusters of offshore wind farms, or countries seeking greater energy security and reliability. 

Interconnection projects will need suitable infrastructure onshore and offshore, including substations, subsea cables, landfall works and other transmission assets. On this page, learn how our specialists support these complex projects. 

Our teams also support transmission, grid connection, telecommunications and other subsea cabling. To learn more or discuss your project needs, get in touch.

About us

Our team has wide-ranging experience supporting interconnector and transmission projects. We provide holistic on- and offshore expertise and consult on cross-boundary, cross-jurisdiction projects where there is more than one consenting regime.

We are involved in designing the whole transmission asset, taking a strategic view of site selection, permitting, design and compliance. Our projects have tackled the challenges associated with making landfall and we have worked on projects passing through sensitive offshore areas including Designated Sites.

We have also supported the full range of developer types: renewables developers, interconnector developers and transmission operators such as Ossian Offshore Wind Limited, Transmission Investment and National Grid.

Read more about some of our recent and ongoing projects below.

LirIC Interconnector Project

Project aim: to develop a new high-voltage direct current (HVDC) sub-sea electricity interconnector between the Belfast region in Northern Ireland and the Ayrshire region in Scotland.
 
Developer type: interconnector developer

Project location: Scotland and Northern Ireland, Irish Sea.

Our role: Environmental Impact Assessment (EIA) Lead/Consents – offshore and onshore, consulting on the full range of required technical topics to support the consent application.

Project website: https://tinv.com/intercon-projects/liric/

Ossian Offshore Wind Farm Transmission Infrastructure

Project aim: to develop high-voltage direct current (HVDC) export cables from the offshore substation platforms to landfall on the Lincolnshire coast. Onshore transmission infrastructure includes onshore HVDC cables, and onshore converter stations.

Developer type: renewables developer

Project location: Floating offshore wind farm located in the North Sea, about 80-84 km off the east coast of Scotland with landfall in Lincolnshire, England.
 
Our role: Environmental Impact Assessment (EIA) Lead/Consents – offshore and onshore, consulting on the full range of required technical topics to support the consent application. 

Project website: https://ossiantransmission.com/

Read more about our work on this project.

Morocco-UK Power Project

Project aim: a proposed 4,000 km high-voltage direct current (HVDC) subsea cable to carry solar and wind-generated electricity from Morocco to the United Kingdom.

Developer type: renewables developer

Project location: Tan-Tan in southern Morocco to National Grid connection points at Alverdiscott near the north coast of Devon, England, passing through Spain, Portugal and France.

Our role: Environmental Impact Assessment (EIA) Lead/Consents –onshore, consulting on the full range of required technical topics to support the consent application. 

Project website: Morocco-UK Power Project - Xlinks