SAG Group
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Intelligent energy
is the future.  

Secure, efficient, cost-optimised.
Energy infrastructure with SAG.  

Overhead line construction: high-voltage at the highest level

EHV/HV overhead lines are just as individual as they are complex. Various country and business-specific standards paired with constant changes in network structures require in-depth expertise and high levels of flexibility in power line construction.

We bring the necessary experience and specialist knowledge to the table, in order to construct EHV/HV overhead lines at home and abroad up to 500 kV. We don't just take care of new power line construction, but also upgrades and replacements of pylons, as well as swapping out conductor cables.

Our range of services

  • Project management
  • Structural analysis and routing
  • Planning and engineering
  • Material supply
  • Construction, assembly, commissioning
  • Fault clearing
  • Replacement cables
  • Assessment and refurbishment

Overhead line assessment and pylon refurbishment

We carry out assessments and evaluations for HV and MV overhead lines in our research and technology center (german: Versuchs- und Technologiezentrum, VTZ) and develop necessary refurbishment concepts where required. The VTZ is a manufacturer-neutral, accredited testing institute for the study of components, assemblies and complex energy supply systems.


SAG special pylons: a modular system for fault cases

Our special pylon is a modular system for use in fault cases and as a temporary solution for overhead line and substation conversions. The system can be flexibly adapted to the different requirements and mounted in no time. It can be used with a line system up to a voltage of 380 kV.