Platts amends methodology of Supramax scrubber premium index Sept. 1

Platts, part of S&P Global Energy, has amended its methodology for assessing the scrubber premium index, PSSI for Supramax (ASCRS00), to better reflect the global scrubber premium on Supramax ships on a trade-flow weighted basis, effective Sept. 1.

Previously, the PSSI index was assessed as a simple average of the difference in time charter equivalent of scrubber-fitted and non-scrubber ships across the routes assessed by Platts for Supramax ships.

Platts has changed the methodology for the PSSI assessment by considering the difference between the GSP 11S Index (AIDYB00, basis scrubber-fitted) and the GSP 11 Index (AIDYA00, basis bunker fuel 0.5%).

Since the indexes (GSP 11S and GSP 11) are global trade-flow weighted averages, the amended scrubber premium index better reflects the earning differential for scrubber-fitted ships. The change also aligns the Supramax scrubber premium index methodology with that of the Capesize and Panamax segments, which were amended on Oct. 1, 2024, as detailed in a subscriber note available here.

The PSSI assessment follows a 4:30 pm London timestamp and appears in Platts Dry Freight Wire and Dry Freight Wire Monthly. The assessment will not be available when Singapore, London, or both locations observe a national holiday.

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