The EIA reported a 1.1-MMbbl build in U.S. propane/propylene inventories for the week ended June 5, below industry expectations for a 2.3-MMbbl build and the average build for the week of 2.4 MMbbl. Inventory builds since early April have generally been smaller than is typical for this time of year. Total U.S. propane/propylene inventories now stand at 84.5 MMbbl, which is 18.5 MMbbl (28%) above the same week in 2025, 21.1 MMbbl (33%) above the five-year average, and 9.0 MMbbl (12%) above the five-year maximum for the week.
Much of the inventory surplus remains concentrated in PADD 3 (Gulf Coast), where propane inventories edged up 32 Mbbl during the week to 56.4 MMbbl. Regional inventories are 13.5 MMbbl (32%) above the same week in 2025, 18.1 MMbbl (48%) above the five-year average, and 9.7 MMbbl (31%) above the five-year maximum for the week. The pace of inventory builds in the Gulf Coast has moderated since early April, mirroring the national trend and reducing the gap between current inventories and the upper end of the five-year range as seasonal inventory builds continue.
