Aggreko to Deliver ‘Australia’s Largest’ Off-Grid Renewable Hybrid Power Plant

Why It Matters

By delivering a large‑scale renewable hybrid solution, Aggreko helps miners lower operating costs and meet tightening carbon targets, accelerating the shift toward cleaner energy in Australia’s resource industry.

Key Takeaways

• Aggreko signs 15-year PPA with Harmony Gold for Eva copper mine.
• Plant will feature 118 MW solar, 250 MWh battery, and 104 MVA thermal generation.
• Project valued at AUD 2.4 bn (~$1.67 bn), supporting 75 km‑remote mine.
• Hybrid design aims to cut fuel use and emissions significantly.
• Marks Australia's largest off‑grid renewable hybrid power facility to date.

Pulse Analysis

The Eva project underscores a growing trend among Australian miners to replace diesel‑heavy power stacks with renewable‑centric solutions. Aggreko’s 15‑year agreement guarantees a stable electricity supply for Harmony Gold’s $1.67 billion copper mine, while the hybrid architecture—solar, battery, and thermal generation—delivers flexibility that pure renewables cannot achieve in remote locations. By integrating 118 MW of photovoltaic capacity with 250 MWh of storage and a 104 MVA gas‑fired plant, the system can balance intermittency, meet peak demand, and reduce fuel consumption, translating into measurable cost savings and a smaller carbon footprint.

Technically, the hybrid configuration sets a new performance benchmark for off‑grid operations. The 118 MWp solar array generates power during daylight hours, while the battery smooths short‑term fluctuations and provides instant dispatchable energy. The thermal unit, sized to 104 MVA, acts as a reliable back‑stop during extended low‑sun periods or unexpected load spikes. Compared with other Australian projects—such as Zenith’s 95 MW Kathleen Valley hybrid and the upcoming 530 MW Northern Star facility—Aggreko’s plant is the largest purely off‑grid installation, yet it remains modular enough for future wind integration or grid connection, illustrating a scalable pathway for other resource developers.

From a market perspective, this development signals a decisive shift toward decarbonisation in the mining sector, driven by both regulatory pressure and the economics of renewable energy. As capital costs for solar and battery storage continue to fall, hybrid models become financially attractive, offering miners a hedge against volatile fuel prices and carbon pricing mechanisms. Aggreko’s ownership and operational model also reduces upfront investment risk for miners, potentially accelerating adoption across Australia’s resource base and setting a template for similar projects worldwide.