What were the key drivers behind the record-high US propane and propylene stocks reported by the EIA for the week ended August 14?

According to the EIA data cited in the article, US propane and propylene stocks reached an all-time high of 107.013 million barrels due to three simultaneous factors: rebounding domestic production (which rose to 2.911 million barrels/day—the highest since early July), increased imports, and a week-over-week decline in total demand (which fell 4,000 b/d to 2.725 million b/d), driven primarily by a 63,000 b/d drop in domestic product supplied despite a 59,000 b/d rise in exports.

Which US regions contributed most to the inventory build, and what contextual factor may explain the Midwest’s surge?

The US Midwest (PADD 2) led the inventory increase with a rise of 1.148 million barrels (5%) to 26.154 million barrels—the highest level since December 5, 2025—while the Gulf Coast followed with an 876,000-barrel increase to 67.819 million barrels; the Midwest build is likely linked to the upcoming crop-drying season, which typically begins in late August or early September, as noted in the article.

US propane, propylene stocks reach all-time high: EIA

Aug 20, 2026

US propane and propylene inventories hit record highs in mid-August per EIA data, driven by rising production and imports against falling demand. Despite the bearish stock signal, Gulf Coast prices rose slightly following the report.

chemweek

US propane, propylene stocks reach all-time high: EIA

chemweek

2026-08-20

US propane, propylene stocks reach all-time high: EIA

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