Underground & Sub-Sea cables Tractebel

Power System & Gas Storage

Underground & Sub-Sea cables

Power Where Overhead Isn’t an Option

Julien Denegre - Tractebel
Julien Denegre
Product Director - Gas & Power System
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Engineering the energy transition below the surface.

As the world goes increasingly electric, we need solutions to transport high-voltage electricity efficiently and discreetly. Tractebel provides cutting-edge engineering solutions where overhead lines are not an option using underground and subsea cable systems. 

 

With deep technical expertise and proven execution capabilities, we deliver end-to-end services across the full lifecycle of underground and subsea cable projects—from design and routing to construction, installation and commissioning. 

 

The cable solutions we engineer enable grid interconnection, urban electrification and the integration of offshore renewable energy—strengthening the resilience and sustainability of power networks around the world. 

 

Our multidisciplinary experts are known for developing advanced cable system solutions that meet the highest standards for reliability, safety and environmental protection.  

Underground & Sub-Sea cables solutions

Your opportunities

  • Feasibility and design studies covering electrical, mechanical, civil, environmental and economic aspects 

  • Urban grid integration, reinforcing or replacing aging underground cables 

  • Cross-border interconnections to support regional energy markets and energy security 

  • Solutions to minimise visual and environmental impact 

  • Discreet solutions to ensure energy security in sensitive or complex areas

  • Consulting services related to the energy transition from permitting to regulatory compliance   

Our value

  • Deep multidisciplinary expertise in underground and subsea cable projects from routing and thermal analysis to marine operations 

     

  • Proven ability to design tailored systems with appropriate cable types (AC/DC), insulation, and reactive compensation

  • Excellence in handling the interface with substations or converter stations, ensuring regulatory compliance and technical performance 

  • Record of success obtaining permits and effectively collaborating with lenders and other project stakeholders

  • Ability to identify, mitigate and manage risks and maximise the lifetime performance of cable assets 

  • Reputation for successful operations in complex and remote terrains across multiple countries