Sep 30, 2026

109.6 Million Barrels Mark the End of US Propane Build Season

US propane primary stocks stood at 109.6 million barrels as of September 25, with demand up 42% on the week. Exports fell 32% week over week. Build season ends with Mont Belvieu at $0.894/gal, 29% above the five-year median.

Numbers as of Sep 30, 2026 pull

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US propane primary stocks stood at 109.6 million barrels as of September 25, covering 124 days of supply at the trailing four-week product-supplied average of 0.886 million b/d, per the EIA Weekly Petroleum Status Report. Demand (product supplied) hit 1.085 million b/d for the week, up 42.0% on the week and 23.4% above the five-year median. Exports fell to 1.669 million b/d, down 32.4% on the week and 10% below the five-year median.

Mont Belvieu propane spot price
$/gal
Chart as of Sep 30, 2026. View live chart →
  • US propane exports fell 32.4% week over week to 1.669 million b/d, 10% below the five-year median. The largest single-week percentage decline of any series this week, per the EIA Weekly Petroleum Status Report.
  • Mont Belvieu propane spot (EIA): $0.894/gal, up 3.5% on the week, 29% above the five-year median.
  • PADD 3, the Gulf Coast, propane stocks: 70.4 million barrels, 25.7% above the five-year median, up 3% on the week (EIA WPSR).
  • PADD 1B, the Central Atlantic, propane stocks: 5.4 million barrels, 12.8% below the five-year median, the furthest below normal of any region tracked this week (EIA WPSR).
  • US propane imports: 0.075 million b/d, down 16.7% on the week, 13% below the five-year median (EIA WPSR).
  • EIA's Short-Term Energy Outlook puts US propane/propylene inventories at 100.4 million barrels at end-December 2026.