Canada's primary underground propane inventories increased by 6.2% in September, according to the Canada Energy Regulator. The total represented a month-to-month increase of 98 Mcm. Compared to a year earlier, stocks were higher, with 15.5 Mcm, or 0.9%, more product on hand.

Propane storages in the West started September a bit higher at 1149.6 Mcm, which corresponds to 7.2 MMbbl, the agency reported. From August to September, volumes increased by 16.5 Mcm, or 1.5%, and were 137 Mcm more the year prior's level of 1012.6 Mcm.

Propane storages in the East started September higher at 522.6, commensurate with 3.3 MMbbl. This gain put propane 81.5 Mcm, or 18.5%, higher for the month, with a decrease of 121.4, or 18.9% below a year earlier.

Canadian butane inventories stood at 1167.1 Mcm at the beginning of September, for an increase of 79.5 Mcm, or 7.3%, from August. Unlike propane, the year-over-year comparison finds butane volumes to be lower than the prior year's total, with inventories 116.5 Mcm, or 9.1%, below 2023.

Western butane supplies, at 629.2 Mcm, were higher by 10.2 Mcm, or 1.6%, from the previous month and were 60.8 Mcm, or 8.8%, less than last year. Eastern butane, at 537.8 Mcm, was 69.2 Mcm, or 14.8%, higher month over month, and totaled 55.8 Mcm, or 9.4%, below a year earlier.