Aggreko–Harmony Eva copper hybrid plant: power and pit planning notes for engineers
Reviewed by Joe Ashwell
First reported on International Mining – News
30 Second Briefing
Aggreko has signed a minimum 15‑year power purchase agreement with Harmony Gold to build and operate what is described as Australia’s largest off‑grid renewable hybrid power facility for the Eva copper project in northwest Queensland. The build‑own‑operate arrangement will combine on‑site renewables with thermal generation and battery storage to supply continuous power to the remote open‑pit operation. For mine planners and process engineers, the long‑term PPA locks in a dedicated low‑emission power source, influencing pit expansion options, processing throughput and future electrification of mobile fleets.
Technical Brief
- Contract term is explicitly “minimum 15 years”, allowing long‑horizon mine planning around a fixed power solution.
- Facility is described as Australia’s largest off‑grid renewable hybrid plant, indicating multi‑tens of megawatts scale.
- Hybrid configuration integrates on‑site renewables, thermal generation and battery energy storage for grid‑quality power in islanded mode.
- Remote northwest Queensland location necessitates full electrical islanding, with no reliance on the National Electricity Market.
Our Take
In our database, Harmony’s Eva copper project in Queensland appears repeatedly alongside major contracts to Thiess and Metso, signalling that the Aggreko offtake-style power deal is part of a coordinated build-out of mine, plant and energy infrastructure rather than a standalone sustainability gesture.
Aggreko’s recent commentary on fuel price volatility in African mining, also in our coverage, underlines that the Eva copper power purchase agreement in Australia fits a broader commercial push by the company to replace diesel-exposed generation with hybrid systems at remote copper and gold operations.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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