In its newly released 2025 Sustainability Report, OceanaGold has signaled a significant acceleration in its transition toward low-carbon operations. The gold producer is currently assessingthe next steps in its plan to reduce carbonemissions, with astrong emphasis on buying renewable energy and figuring out ifelectric mining trucks are a viableoption In a landmark achievement for 2025, the company successfully reached 100% renewable electricity supply across all four of its global operations.
Key highlights of this transition include:
• Haile & Didipio: Scaled renewable energy certificates from 25% to 100% at Haile and 0% to 100% at Didipio.
• Macraes & Waihi North: Maintained the 100% renewable sourcing that has been in place at these New Zealand sites since 2021.
By securing lower-carbon power sources, OceanaGold ensures that future electrification efforts will result in a genuine net reduction in GHG emissions rather than simply shifting the carbon load to the grid.
Electrification Studies at Macraes and Waihi North
While renewable power is the current driver, the future of OceanaGold depends on fleet electrification. The company is currently conducting deep-dive technical studies at its New Zealand operations to determine when electric fleet components become economically and operationally viable.
Macraes: The Five-Year Outlook
At the Macraes mine, an external study commissioned in 2025 is examining the roadmap for electric and hybrid fleet solutions over the next five years. This study is specifically evaluating:
• Retrofit Technologies: Assessing the viability of diesel-to-electric and diesel-to-hybrid conversions for existing machinery.
• Commercial Readiness: Determining when emerging technologies will be “mine-ready” for large-scale deployment.
• Operational Compatibility: Ensuring new tech can handle the rigors of the Macraes site.
Results from this comprehensive study are expected to be finalized in 2026.
Waihi North: Underground Innovation
For the Waihi North Project, the miner is using diesel mechanical equipment as a baseline to measure the benefits of electrification. Right now, the best route for digging stuffunderground seems to be using those diesel-electric loadersOceanaGold continues to monitor battery-electric vehicle (BEV) maturity to see when a full transition becomes feasible.
Strategic Partnerships: Caterpillar ‘Pathways to Sustainability’
OceanaGold isn’t navigating this transition alone. The company’s actively involved in Caterpillar’s ‘Pathways to sustainability’ initiative This industry-wide initiative allows OceanaGold to collaborate on identifying hybrid and electric fleet opportunities, ensuring they remain at the forefront of mining technology.
The Path to Net Zero
OceanaGold’s strategy remains clear: prioritize projects with “material decarbonization benefits.” By combining a fully renewable power grid with rigorous testing of electric fleet components, the company is laying the groundwork for a sustainable, low-emission future in gold mining.
