# 109.6 Million Barrels Mark the End of US Propane Build Season _Sep 30, 2026_ > 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._ 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. [Chart: Mont Belvieu propane spot price](https://fill-line.com/current-price/propane) ([data](https://fill-line.com/current-price/propane.md) — chart image: https://fill-line.com/charts/issues/propane/2026-09-30/current-price/propane.png) - **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. --- Canonical URL: https://fill-line.com/issues/2026-09-30