# Monadelphous secures $380 million Brigalow construction contract for CS Energy

> CS Energy awarded Monadelphous an approximately \$380 million contract near Chinchilla, Queensland. The balance-of-plant package includes construction and installation of 12 aeroderivative gas turbine generator units with a combined planned rating of 400 MW, plus engineering and design of minor packages. Work is scheduled to start in the second half of 2026 and finish in early 2029.

- **Source date:** 2026-06-05
- **Original source:** [Monadelphous](https://www.monadelphous.com.au/investors/asx-announcements/2026/06/monadelphous-secures-major-construction-contract-with-cs-energy/)
- **Reading time:** 2 min
- **Language:** en
- **URL:** https://voltformer.com/news/brigalow-power
- **Markdown:** https://voltformer.com/news/brigalow-power.md

## Reported scope and milestone

CS Energy awarded Monadelphous an approximately \$380 million contract near Chinchilla, Queensland. The balance-of-plant package includes construction and installation of 12 aeroderivative gas turbine generator units with a combined planned rating of 400 MW, plus engineering and design of minor packages. Work is scheduled to start in the second half of 2026 and finish in early 2029.

[Monadelphous](https://www.monadelphous.com.au/investors/asx-announcements/2026/06/monadelphous-secures-major-construction-contract-with-cs-energy/)

## Engineering interpretation

Monadelphous is responsible for construction and installation with limited minor-package design, while the 400 MW figure is the planned rating of the future plant. Aeroderivative units can support flexible generation, but the announcement does not say Monadelphous designed the complete power station or that it is already operating.

[Monadelphous](https://www.monadelphous.com.au/investors/asx-announcements/2026/06/monadelphous-secures-major-construction-contract-with-cs-energy/)

## Delivery responsibilities

A joint venture, alliance or integrated delivery arrangement distributes responsibility among organizations with different technical and contractual roles. The useful reference is the package each participant actually manages, designs or constructs. Interface registers and acceptance plans should connect those packages without erasing their boundaries. Work at a shared project is not proof that one firm owns the whole contract or completed every asset. Procurement and construction reviews should retain the named partners, the recorded milestone and the distinction between delivery participation and operation.

[Monadelphous](https://www.monadelphous.com.au/investors/asx-announcements/2026/06/monadelphous-secures-major-construction-contract-with-cs-energy/)

## Related company profiles

- [Monadelphous](https://voltformer.com/epc-contractors/monadelphous) · [Markdown](https://voltformer.com/epc-contractors/monadelphous.md)

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