Details Civils - Tungkillo BESS Project

Open for submissionsSubmission deadline: 13 November 2026

About this tender

Overview Iberdrola Australia Limited (NSW) is seeking a contractor to undertake the Details Civils package for the Tungkillo BESS Project, comprising the detailed design, supply, and construction of all civil infrastructure required to support the battery energy storage system installation. Scope The scope includes: Detailed design, supply, and construction of civil infrastructure required to support the battery energy storage system installation Design and construction of underground cable trenching required to support power, control, and communications reticulation across the BESS site Trench excavation to specified depths and widths in accordance with cable manufacturer and design specifications Bedding and backfill, including sand bedding, cable marker tape, and compacted fill in trafficable and non-trafficable areas Installation of conduits and duct banks for HV, LV, and fibre/comms cabling Trench reinstatement to match surrounding surface conditions, including hardstand, access road, or landscaped areas Coordination of trench routes to avoid clashes with existing services and foundations

How to respond to this tender

A strong tender response is clear, compliant, and backed by evidence. These steps apply to most Australian and New Zealand public tenders.

Read the requirements in full

Open the official listing and download the full tender pack. Note the response schedules, evaluation criteria, mandatory conditions, and the exact closing time and lodgement method.

Confirm you are eligible and it is worth bidding

Check licences, insurances, certifications, and any conformance requirements before you commit. A quick bid or no-bid decision saves days of wasted effort on a tender you cannot win.

Answer every criterion with evidence

Respond to each evaluation criterion directly and back your claims with concrete examples, referees, and past performance. Address the buyer’s stated need, not a generic capability statement.

Lodge early through the official portal

Submit through the source portal well before the deadline. Late or incorrectly lodged bids are almost always rejected, so leave time for uploads, portal errors, and last-minute questions.

Ready to write winning tenders?

Sign up today, what a relief.

Sign up