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The Next Generation of Power Transmission
PFAS- and SF6-free compressed-air cable systems for a sustainable and efficient expansion of medium- and high-voltage grids.
More sustainable, efficient and future-ready – for the expansion of modern power grids.
High Transmission Capacity
For medium- and high-voltage grids from 12 to 420 kV and up to 5,000 A.
PFAS- and SF6-Free
Natural compressed air as an insulating medium reduces environmental risks.
Reuse Existing Infrastructure
Ideal for ducts, microtunnels and accessible utility tunnels – even where space is limited.
Enhanced Operational Reliability
Continuous condition monitoring for safe and reliable operation.
Solutions for Medium- and High-Voltage Grids
Hivoduct enables versatile applications in medium- and high-voltage grids – from substations and grid expansion projects to specialised applications.
High-voltage networks
High-performance pressurized-air cables for transmission networks, grid expansion projects, and the efficient transfer of large amounts of power over medium and long distances.
Medium-voltage networks
Compact and efficient solutions for industrial facilities, critical infrastructure, and regional distribution networks with demanding power requirements.
Substations & switchgear
One phase per pressurized-air duct. A flexible system architecture for high-voltage networks, substations, and power transmission applications up to 420 kV.
Specialized & high-current applications
Engineered for battery energy storage systems, data centers, hydrogen facilities, and other applications requiring high current capacity within limited space.
High-current busbars
Temporary construction cables
Specialized applications
How a pressurized-air cable works
Pressurized-air cables transmit electrical power through enclosed conductors housed within a pressure-monitored duct system. Pressurized air acts as the insulating medium, enabling high transmission capacity in a compact infrastructure.
1. Transmit power
Conductors carry electrical energy with high current-carrying capacity for medium- and high-voltage networks.
2. Insulate with pressurized air
Pressurized air replaces conventional insulation media, enabling a PFAS- and SF₆-free infrastructure.
3. Monitor system condition
Pressure and condition data are continuously monitored to support safe, reliable operation.
Proven technology for modern power grids
From research to grid infrastructure.
✔ Voltage level up to 420 kV
✔ PFAS- and SF₆-free
✔ E Successfully validated through high-voltage testing
✔ Pilot installations and field trials
✔ Designed for transmission, distribution, and industrial application
Hivoduct combines the proven engineering principles of gas-insulated transmission systems with an innovative pressurized-air architecture, delivering a sustainable alternative for modern medium- and high-voltage networks.
Pressurized-air cables compared to established technologies
Pressurized-air cables combine the advantages of underground power transmission with high power-transfer capability, reduced losses, and PFAS- and SF₆-free insulation.
Pressurized-air cables vs. XLPE cables
A comparison of transmission capacity, losses, infrastructure requirements, and operational characteristics.
Pressurized-air cables vs. overhead lines
A comparison of land use, transmission performance, environmental impact, and grid expansion considerations.
Speak with our experts
Whether you are a grid operator, industrial company, or infrastructure developer, we support you in evaluating and integrating pressurized-air cable systems.
- Technical feasibility assessments
- Project and application consulting
- Technical documentation and test reports
- Direct access to our engineering team
News
Stay up to date! Here you will find the latest developments and innovative projects related to our company
Configure your pressurized-air cable system
Use our online configurator to create a customized solution for your application. Explore system options, technical parameters, and suitable configurations with ease.
