Eyre Peninsula Transmission Line Project

Location

South Australia, Australia

Owner

ElectraNet

Contractor

Downer Utilities

Overview

Protecting Power for Generations.

ElectraNet’s Eyre Peninsula Link is a transformative infrastructure project - delivering a new 132 kV transmission line and upgrading five substations to secure energy for the next 50 years.

But building a double-circuit transmission line across a remote part of South Australia brought logistical pressure and tight deadlines.

As ElectraNet’s preferred signage supplier, Identimark delivered over 5,000 U3 signs; on time, to spec, and packed in manageable quantities for field teams.

5,000+ safety and ID signs supplied

All signs packed by install area and variable data

Met milestone deadlines across two build stages

Signage delivered despite remote access and Covid-19 impact

15-year partnership with ElectraNet as preferred supplier

Challenge

What needed to be solved.

The Eyre Peninsula transmission upgrade was a staged build with tight milestone dates and multiple layers of complexity. From remote site access and pandemic disruptions to variable data signage with rapid turnaround needs, ElectraNet needed a trusted partner who could deliver without delay.

The final stage in particular demanded short lead times and high accuracy delivered to a location hours from major freight hubs.

Key challenges included:

Tight timeframes: Milestone-driven rollout required accurate delivery coordination.

Remote access: Transporting materials to isolated sites increased logistical risk.

Complex signage scope: Late-stage orders with variable data needed to be packed in install-ready batches.

Identimark supplied aerial ID plates, danger high voltage signs, and tower ID plates - each engineered to ElectraNet’s specific requirements. We used variable data batching and smaller packaging runs to streamline on-site deployment. All signs were manufactured using U3 materials for long-term outdoor performance.

Our 15-year relationship with ElectraNet meant we were already across their standards, which enabled faster production, QA, and approvals throughout the process.

Identimark’s contribution helped keep the Eyre Peninsula Link on schedule and safely executed. Our packaging strategy, consistent product quality, and long-standing partnership with ElectraNet helped simplify a complex transmission rollout - exactly where it mattered.

Key solutions included:

Aerial ID Plates with Variable Data

Custom-coded for tower identification across long spans of transmission infrastructure.

Danger High Voltage Signs

Critical safety signage manufactured with UV and weather-resistant U3 materials.

Tower Identification Plates

Compliant with transmission asset labelling standards, ensuring long-term traceability.

Featured projects

Transpower Tower Signage.

New Zealand

Identimark collaborated with Transpower’s engineering team to design a full range of U3 tower signage. A cost analysis revealed millions in potential savings, and a formal standards update followed.