Sources indicated on 7 October 2026 that biodiesel blend B100 has seen its premiums over conventional marine fuels narrow sharply in major bunkering centres named in the report.
In Rotterdam the most pronounced move recorded was a swing in B100’s position relative to very low sulphur fuel oil, or VLSFO. B100 moved from a premium of $40 per metric tonne to a $1/mt discount, a change driven by a larger decline in the biofuel than in the conventional fuel.
The report states that B100 fell by $48/mt while VLSFO dipped by $7/mt, the combined effect reversing the previous premium and leaving B100 marginally cheaper than VLSFO in the port on the day of the survey.
Rotterdam price movements
Rotterdam’s relationship with heavy fuels also shifted. The premium B100 held over high sulphur fuel oil narrowed by $20/mt to stand at $90/mt, an outcome the report links to the steeper fall in B100 relative to HSFO.
The report additionally records that B100’s discount to low-sulphur marine gasoil, LSMGO, in Rotterdam narrowed by $1/mt, indicating a modest adjustment among the light-distillate comparators.
Spreads and magnitudes
Taken together the figures show B100 declining by a total of $48/mt in the port, against a $7/mt drop for VLSFO; the arithmetic of those moves explains the rapid compression from a $40/mt premium to a $1/mt discount versus VLSFO.
reports’s item carries the same headline reference to Singapore, indicating similar market attention at that bunkering hub, while the detailed numbers supplied here relate to Rotterdam as reported on 7 October 2026.
The movements recorded in Rotterdam underline how shifts in absolute prices of alternative fuels can quickly alter relative spreads, with B100’s larger fall reshaping its competitiveness against both heavy and distillate grades within the span of the report.
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