UGL has won the EPC role for APA’s $259 million Sybella solar and battery project.
APA Group has appointed CIMIC Group company UGL to deliver the engineering design, procurement, construction and commissioning of the Sybella Creek Solar Farm and Battery Energy Storage System in Mount Isa.
The confirmed delivery scope covers a 72MW solar farm and a 52MW / 104MWh BESS. APA reached final investment decision on the project in August and committed approximately $259 million of project investment, with construction anticipated to begin in late 2026 and completion targeted for mid-2028.
For BBI readers, the important change is not the project itself — BBI covered the FID in August — but the move from an approved investment into a named principal delivery structure. UGL is now the confirmed EPC contractor for the two new renewable assets.
UGL’s appointment converts an August investment decision into a named delivery structure
APA announced final investment decision for Sybella Creek on 20 August 2026. At that point, the key confirmed facts were the project investment, the solar and battery capacities, the long-term energy arrangement with Ernest Henry Mining and the expected late-2026 construction start. A principal EPC contractor had not been identified in the material reviewed by BBI.
That changed on 14 September. UGL announced that APA had awarded it the contract to deliver engineering design, procurement, construction and commissioning for both the 72MW solar farm and the 52MW / 104MWh battery energy storage system. The announcement did not disclose the value of UGL’s contract.
The distinction is important for contractors and suppliers. FID tells the market that capital has been committed; an EPC award tells the market who is now responsible for turning the project into an operating asset. It concentrates the main delivery interface with UGL and gives industry a clearer organisation to watch for mobilisation, supplier engagement and any future subcontracting or procurement notices.
The EPC scope spans the full delivery chain for the new solar and battery assets
Engineering, procurement, construction and commissioning
UGL’s announcement describes an end-to-end EPC role. That puts the contractor across the design and procurement phase as well as physical construction and final commissioning of the two new assets. The confirmed project capacities remain unchanged from APA’s FID announcement: 72MW of solar generation and 52MW / 104MWh of battery storage.
Construction is anticipated to commence in late 2026 and completion is expected in mid-2028. Those dates remain programme targets rather than evidence that full construction has already started. BBI has not identified a public statement confirming site-wide construction commencement as of 15 September.
The UGL award also gives the project a contractor with a substantial renewable-delivery portfolio. UGL says Sybella will be its 16th solar farm and 12th battery energy storage system project.
UGL also pointed to an established relationship with APA, including delivery experience on APA’s Dugald River Solar Farm and Port Hedland Battery Energy Storage System. That history matters because Sybella combines generation and storage in another remote industrial-energy setting where interface management, commissioning and reliability are central to the project outcome.
Sybella sits inside a broader Mount Isa industrial-energy system
APA’s investment case is not a standalone merchant renewable project. The development is underpinned by an Energy Supply Agreement with Ernest Henry Mining Pty Ltd, Evolution Mining’s wholly owned subsidiary, running until mid-2046. APA has said the new solar and battery assets will be complemented by firming capacity and energy supply from its existing Diamantina Power Facility.
APA’s stated objective is to provide a lower-emissions, reliable energy solution for Ernest Henry while also supporting reliability and resilience across the North West Power System. The company has positioned the project as part of its remote-power-generation growth strategy and as infrastructure supporting the North West Minerals Province.
That operating context helps explain why the battery is commercially important. The BESS is not simply an add-on to the solar farm; it is part of the reliability architecture around variable renewable generation and industrial demand. APA has specifically said the battery will enhance network reliability and resilience for Ernest Henry and more broadly for mining customers and the local community.
The contractor lens now shifts from “who wins EPC?” to “how will UGL execute?”
FID and EPC award are confirmed; construction remains the next execution gate
The sequence is now unusually clear. APA reached FID on 20 August. UGL’s EPC appointment was announced on 14 September. Construction is targeted for late 2026, followed by a mid-2028 completion target.
For the supply chain, the award narrows the commercial focus. Businesses should monitor UGL and APA’s official procurement and supplier channels for any packages or vendor requirements rather than treating generic capability areas as open tenders.
Typical delivery needs for a project of this kind can include civil site preparation, foundations, solar installation, high-voltage and electrical works, battery logistics and integration, controls, testing, commissioning, craneage, transport and project services. Those are capability areas to watch, not confirmed subcontract packages.
UGL’s position across engineering, procurement and commissioning also means vendor selection can occur before the public sees visible construction on site. That can make early supplier registration, prequalification and relationship management more relevant than waiting for earthworks to appear in project photography.
Confirmed now versus what remains to be announced
- APA has reached FID and committed approximately $259 million to Sybella Creek.
- UGL is the appointed EPC contractor.
- UGL’s scope covers engineering design, procurement, construction and commissioning.
- The project includes 72MW solar and a 52MW / 104MWh BESS.
- The project is underpinned by an Energy Supply Agreement with Ernest Henry Mining to mid-2046.
- Construction is anticipated in late 2026 and completion is planned for mid-2028.
- UGL’s EPC contract value has not been disclosed.
- BBI has not identified public confirmation of full construction commencement yet.
- Detailed subcontract packages, supplier awards and major equipment vendor appointments are not confirmed in the sources reviewed.
- Site layout, electrical interfaces and logistics plans should not be inferred from editorial artwork.
- Future procurement timing may change as engineering and mobilisation progress.
Why the UGL award matters for North West Queensland
Sybella is a relatively compact project compared with the state’s largest grid-scale renewable developments, but its industrial context gives it strategic weight. Mount Isa and the North West Minerals Province depend on reliable power for energy-intensive mining and processing activity, and APA is explicitly linking the development to regional energy security and critical-minerals growth.
The award also reinforces UGL’s position in integrated renewable delivery. The contractor is not entering the project as a narrow construction subcontractor; it is carrying the EPC responsibility for both generation and storage. That gives UGL control over key interfaces between design, equipment procurement, construction sequencing and commissioning.
For regional contractors, the practical signal is to watch execution rather than speculate about scope. The strongest future news points will be confirmed mobilisation, supplier or subcontract awards, long-lead equipment selections and the formal start of construction. Until those occur, BBI will treat capability references as market intelligence rather than live work.
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