The propane export market can sometimes do some strange things, especially when Gulf Coast dock capacity is maxed out. That has certainly been the case since midyear 2024.
The spot rate for loading propane on to a vessel on the U.S. Gulf Coast averaged 6 c/gal for 2021-2023 (red dashed line on chart below), a good signal that there was adequate capacity to meet the demand for U.S. surplus production to be exported. During that same timeframe, the shipping cost to move a gallon of propane from the Gulf Coast to Japan ramped up from 12 c/gal to 45 c/gal (green dashed line) in part due to a tight VLGC (Very Large Gas Carrier) shipping market resulting from problems with the Panama Canal and ships avoiding the Suez Canal.
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