Propane is an important winter fuel in the U.S., with about half of annual demand concentrated in what is usually the coldest one third of the year – November through February. With strong winter demand as predictable as clockwork, you might think that propane prices are high in the winter and would tend to be even higher when particularly frigid weather descends on propane country. Unfortunately for those propane marketers that must anticipate prices to manage their supply strategies, it rarely works that way. That’s why the recent spike in January 2024 propane prices, up from 69 c/gal two weeks ago to 94 c/gal on Friday (+34%) is such a big deal. Frigid weather actually pulled propane prices higher!
The left graph below compares the price of Mont Belvieu propane to degree days for PADD 3 (Gulf Coast) population weighted for propane demand. In 2022 the price of propane moved up in March (red dashed oval), well after degree days peaked in February. Last winter the price move was even more counterintuitive, with degree days maxing out in the last week of the year (green dashed oval), while propane prices dropped to the lowest of the year. That’s the reason this year, higher propane prices are news with degree days and prices both up over the past two weeks (purple dashed oval).