US refineries hit 8-year-high runs as Alberta's crude cushion thins into Labor Day

US refineries are running their crude harder than they have in eight years, and their biggest foreign supplier could ship less into the peak. Government data puts processing volumes at the highest level since 2018, with plants pushing to cash in on diesel margins that hit a record this week. The problem is timing. Canada normally ships more than 4 million barrels a day into US refineries, most of it heavy crude out of northern Alberta, and Alberta's stored crude is now at its lowest in over a year. With storage that thin, there's little cushion to draw on just as diesel demand peaks into the holiday weekend.

What it means downstream

For jobbers and haulers, the squeeze shows up in the crack spread before it shows up at the rack. Refiners chasing record diesel margins need cheap heavy feedstock to make the economics work, and Alberta is where a lot of that heavy comes from. Thin storage up north means less room to smooth a hiccup, so any pipeline slowdown or apportionment could tighten Gulf and Midwest supply fast. Diesel buyers should watch basis differentials into Labor Day rather than the flat screen price. If Canadian barrels get scarce, the mid-continent refiners that lean hardest on them are the ones that could pull back runs first.

Russian refining hits

Ukraine struck the Novokuibyshevsk and Ozon refineries, the latest in a run of attacks on Russian processing capacity. Putin acknowledged the strikes are hurting the economy. This doesn't move a US rack price directly, since Russian product is sanctioned out of the American market anyway. It matters because lost Russian refining tightens global diesel and jet supply, and diesel is a global barrel. Fewer Russian exports to its usual buyers can pull cargoes that would otherwise ease the Atlantic Basin, which feeds back into the same high margins US refiners are enjoying now.

Kulevi and Eni

Georgia's Kulevi terminal is dropping Russian oil under EU pressure, a small piece of the broader squeeze on where Russian barrels can legally land. Eni, meanwhile, is talking up nuclear fusion as its eventual replacement for refining, a decades-out bet with no bearing on this quarter's supply.

What to watch

Alberta storage and any apportionment notices on the cross-border lines are the near-term tell. If Canadian flow tightens while US runs stay near the 8-year high, diesel margins could hold firm or firm further into September. Watch whether Midwest refiners trim runs to protect feedstock.