As part of our ongoing efforts to improve data quality and accuracy, we will update the thermal expansion coefficient used to calculate butane cargo volumes, effective 23 November 2026.
This methodology enhancement will better account for temperature differences during transportation, improving the accuracy and consistency of our LPG volume estimates.
Why are we making this change?
Natural gas liquids (NGLs) volumes are typically reported in barrels at a standard reference temperature of 60°F (15.6°C). However, it is transported at significantly lower temperatures aboard liquefied gas carriers, affecting its physical volume.
Updating the thermal expansion coefficient will allow us to better account for these temperature differences and align our calculations more closely with industry practices and actual cargo conditions.
What is the expected impact?
Following this update, reported butane cargo volumes in barrels are expected to increase by approximately 5–7%.
The revised methodology will be applied to both current and historical data, resulting in upward revisions to reported butane volumes. The exact impact may vary depending on trade flow characteristics.
No action is required from users.