Thiess Set to Retrofit Caterpillar 793D with FLANDERS Hybrid Kit

Why It Matters

The hybrid retrofit offers a near‑term, cost‑effective emissions reduction pathway for heavy‑duty mining equipment, accelerating the sector’s move toward net‑zero while preserving asset value.

Key Takeaways

• Thiess partners with FLANDERS for diesel‑mechanical hybrids
• 16% fuel reduction expected on Cat 793D trucks
• Trial slated for 2026 in New South Wales
• Potential 360 tCO₂‑e saved per truck annually
• Hybrid kits enable asset life extension before full electrification

Pulse Analysis

The mining industry faces a paradox: rising energy demand and stringent emissions targets clash with the technical and financial hurdles of fully electrifying massive haul trucks. While battery‑electric and hydrogen solutions promise zero‑emission operations, their commercial readiness remains years away. Companies therefore seek pragmatic bridge technologies that can be deployed on existing assets, delivering immediate carbon savings without sacrificing productivity. Hybrid retrofits, which combine diesel engines with mechanical energy‑storage systems, fit this niche by improving fuel efficiency and performance while extending the useful life of high‑cost equipment.

Thiess’ collaboration with FLANDERS exemplifies this bridge‑technology approach. Leveraging a 2024 memorandum of understanding, the pair completed detailed risk assessments, compliance reviews, and trial designs in 2025, targeting the Caterpillar 793D—a 230‑tonne class workhorse. Modelling suggests a 16% reduction in fuel consumption, translating to about 360 tCO₂‑e avoided per truck annually, plus gains in speed and acceleration that can shorten cycle times. By installing the hybrid kit during a scheduled zero‑hour rebuild, Thiess minimizes downtime and capital outlay, offering clients a cost‑effective decarbonisation step that aligns with existing maintenance cycles.

If the 2026 trial validates performance and reliability, the technology could be scaled across a fleet in Queensland, providing a template for the broader mining sector. Such deployments would demonstrate that hybrid retrofits can deliver measurable emissions cuts while preserving asset value, encouraging other operators to adopt similar solutions. In the longer term, the data gathered will inform the design of next‑generation electric trucks, ensuring a smoother transition to fully zero‑emission fleets and reinforcing the industry’s commitment to sustainable resource extraction.