BHP, GCMD Trial Multi-Feedstock B100 Biodiesel Blend in Existing Iron Ore Supply Chain

Why It Matters

The demonstration shows that large‑scale bulk shipping can achieve substantial emissions cuts while diversifying bio‑fuel feedstocks, easing supply constraints and accelerating the industry’s decarbonisation roadmap.

Key Takeaways

• BHP tested 100% biodiesel blend from used cooking oil and tallow.
• Blend cut well-to-wake emissions ~79% versus VLSFO.
• Pilot validates multi-feedstock handling, traceability, and performance on bulk carrier.
• Demonstrates Singapore’s bunkering infrastructure can support B100 bio‑fuel.
• Success could broaden biofuel supply, reducing reliance on limited UCO feedstock.

Pulse Analysis

Marine transport accounts for nearly a quarter of global CO₂ emissions, prompting shipowners to explore low‑carbon alternatives beyond liquefied natural gas and ammonia. Biodiesel derived from waste streams—primarily used cooking oil (UCO) and animal fats—offers a near‑term pathway, but UCO availability is nearing its projected ceiling. By blending equal parts tallow‑derived biodiesel and UCO, BHP’s pilot demonstrates a practical method to expand feedstock diversity, leveraging existing bunkering assets in Singapore to deliver a 100% renewable fuel without retrofitting vessels.

The trial tackled several technical hurdles that have limited broader adoption of bio‑fuels. Multi‑feedstock blends can exhibit variable oxidation stability, wax formation, and corrosion potential, all of which affect engine reliability and fuel system integrity. BHP partnered with Mitsui, Dan‑Bunkering and Global Energy to monitor fuel quality from blending through bunkering, employing traceability protocols that bolster confidence in emissions reporting. Early data suggest the B100 blend performed comparably to very low sulphur fuel oil, while delivering a 79% reduction in well‑to‑wake greenhouse‑gas intensity—a compelling figure for operators weighing cost against sustainability.

If the findings prove scalable, the industry could see a shift toward more resilient bio‑fuel supply chains, reducing dependence on a single feedstock and smoothing price volatility. Singapore’s Maritime Innovation and Technology Fund backing underscores the strategic importance of regional hubs in catalyzing decarbonisation. Successful integration of multi‑feedstock biodiesel may encourage other bulk charterers to adopt similar blends, prompting upstream investors to expand waste‑fat processing capacity. Ultimately, the pilot positions biodiesel as a viable complement to emerging zero‑carbon fuels, accelerating the maritime sector’s transition to a lower‑emission future.