Inventories at a three-year low and strong demand for exports supported propane prices this month, writes Joseph Barbour
US Gulf coast Mont Belvieu propane prices remained elevated relative to crude last month as domestic inventories declined to their lowest since 2022.
Mont Belvieu LST propane prices averaged 54.3pc of Nymex WTI crude in March, up by 11.4 percentage points from a year earlierand 4.4 percentage points higher than the five-year March average. US propane stocks typically start to build from March as seasonal heating demand abates — the first stockbuild of the year took place in the second or third week of March in 2021-24, EIA data show. And support for prices from expectations of cold weather had largely subsided by early March, market participants said, with outlooks from the US' National Weather Service forecasting warmer than average weather for the first half of March.
But US propane inventories fell for a 23rd consecutive week over the seven days to 21 March, dropping to 43.2mn bl (3.48mn t), their lowest since 29 April 2022, EIA data show. The latest stockdraw was largely because of stronger US exports, which offset weaker domestic demand. Propane exports averaged 1.91mn b/d (4.7mn t/month) in March, up from 1.83mn b/d in February, while domestic sales fell to 1.21mn b/d from 1.45mn b/d.
Propane's value relative to crude reached a three-year high of 59.2pc by the end of February as strong heating demand tightened supply in the first half of the month and market participants appeared to cover short positions as it neared its end. Fading interest in prompt supply in March led prices to largely move in lockstep with crude until mid-month, but prices remained strong on tight supply and rose later in the month as buyers returned, peaking at 94.75¢/USG, or 57.6pc of Nymex WTI crude, on 24 March. As a result, propane will enter the summer off-season from its strongest quarter relative to crude in three years.
US propane exports could remain high in April on strong petrochemical demand in China given rising production margins and delayed purchases from earlier uncertainty regarding US tariffs. But prices historically ease during the off-season and prompt Mont Belvieu backwardation suggests they could begin to fall soon.
