Subsea power transmission enables long-distance electricity exchange via sub-sea interconnectors for cross-border, inter-continental and inter-island grid links. It facilitates cross-region power trading, balances supply-demand gaps and strengthens energy security for geographically separated power networks. Growing pursuit of grid resilience and energy-resource optimisation continues to drive investment in high-capacity undersea interconnection infrastructure.
Resistiendo la presión extrema del agua y la corrosión química durante una vida útil de 30 años.
Colocación precisa en terrenos de lecho marino variados para evitar daños mecánicos.
Minimizar la disipación de energía durante la entrega submarina a larga distancia.

ZTT provides complete subsea power transmission solutions for cross‑border, inter‑continental and inter‑island grid links. We offer a comprehensive portfolio including AC 10kV–500kV and DC ±160kV–±525kV submarine cables, integrated with factory‑molded joints for superior insulation. Our full‑fledged EPIC competence and offshore installation capacity enable turnkey execution of undersea interconnector projects under diverse marine conditions.



Deepsea Self-propelled Cable Laying Vessel

End User: Energinet Eltransmission A/S
Contract Period: Oct. 2023 - Jun. 2025
Cable Type: HVAC 91/167(170) kV, 3*1800mm2
Cable Length: 5.5 km
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