Renewable energy has grown faster than all other energy forms in the last decade. Almost 30% of our electricity now comes from renewable sources, which keeps growing.

Overhead power lines play a vital role in overall energy infrastructure.

Achieving the ambitious goals of a clean energy transition requires associated infrastructure to transmit the electricity to their consumers to replace fossil fuel generation.

However, overhead lines should be considered in discussions surrounding renewable power installations and transmission.

To guarantee the system’s reliability and availability, overhead line design should go through several planning stages.

Components such as conductors, earth wires, insulators, and circuits must all meet electrical and mechanical requirements.

The main factors in designing overhead lines are geometry, sag & span, connections, route, and cost.

Primarily the last factor – cost – can be significantly optimised by our products as the cost of installing an overhead line depends mainly on the conductors’ cross-sections and the towers’ height as well as their foundations.

Moreover, conventional steel offers a sustainable solution as it is fully recyclable with a low CO2 footprint compared to other materials like plastic or carbon fibres.

Protect your investment. Rely on steel.

Using a steel reinforcement core is your conductors’ most cost-effective, long-term choice.

By choosing high-performance Ultra, Mega, and Giga steel cores while meeting new norm IEC 63248, you can optimise the design based on your project needs, even with the most challenging conditions/environments like a fjord or river crossing.

You can choose from 7, 19, and 37 wire constructions. The wires in each strand offer outstanding tensile strength, allowing the strand to move with the environment without creating excessive sag.

Combining these features results in conductors with a much higher capacity, allowing a more efficient energy distribution.

Steel core solutions for conductors in special conditions 

Adding a steel core increases the breaking strength of an aluminium conductor by a factor of 2 to 3. Conductors with a steel core are more resistant to thermal sag and sag caused by various load conditions, such as heavy winds and ice loading.

Moreover, the cores reduce horizontal blowout distances and, consequently, the probability of horizontal clearance violations. 

If you want to learn more, visit: High tensile steel cores for overhead power lines –

DOWNLOAD: Read about the advantages of the high-tensile steel cores described in the CIGRE paper  

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