California's Gasoline Supply Crunch: A Flow Analysis

The core supply shock is clear: California's gasoline imports have surged to unprecedented levels. Through October 2025, the state's imports already exceeded any year since at least 2004, with West Coast averages hitting 118,580 b/d. This is a direct result of two major refinery closures. Phillips 66 shut down its 156,000 b/d Los Angeles refinery in October, and Valero is on track to close its 150,000 b/d Benicia plant by April. Together, these plants accounted for 17% of the state's refining capacity, creating a massive gap that imports are now filling.

The costly, circuitous import route highlights the market's strain. In November, more than 40% of California's gasoline imports came from the Bahamas. This isn't a simple transcontinental shipment; it's a workaround. Gulf Coast refiners send gasoline to the Bahamas to avoid the expensive Jones Act-compliant shipping required for direct US port-to-port moves, then ship it to California on cheaper foreign vessels. This adds another layer of cost to an already premium market.

The scale of this import surge is historic. Seaborne finished gasoline imports to the West Coast have more than doubled since 2023 to 13.27 million barrels in 2025. Even components like alkylate, critical for California's CARBOB blend, have seen imports rise to 6.9 million bbl in 2025, more than five times the 2018 level. This isn't a seasonal blip but a fundamental reshaping of the fuel supply chain, driven by permanent refinery exits and a lack of pipeline connections.

The LCFS Deficit Surge and Compliance Cost

The policy shock is now a market reality. For the first time in over four years, new California LCFS deficits in the third quarter of 2025 exceeded credits, swinging by a record 1.7 million metric tonnes. This deficit gap is the direct result of the state's new, tougher rules that took effect in July, which ratcheted down carbon intensity targets for gasoline and diesel.

The impact is disproportionately heavy on gasoline. Deficits generated from gasoline alone rose by 77% during the quarter, while physical fuel demand grew only 2.3%. This disconnect between compliance pressure and actual usage is a key vulnerability. The market consequence was immediate: the deficit swing directly pressured compliance credit prices higher in both cash and futures markets.

The price action confirms the tightening. After the data release, spot credits were heard traded as high as $66.50/t, and December 2026 futures on the Intercontinental Exchange traded as high as $72/t. This spike from earlier session levels shows the market is pricing in a sustained period of deficit generation, with the inventory of previously generated credits now shrinking.

Catalysts and Flow Implications

The persistent import trend is a structural flow, not a temporary fix. The circuitous route through the Bahamas is likely to endure due to permanent refinery closures, a lack of pipeline access, and a 106-year-old maritime law loophole that allows cheaper foreign shipping. This costly workaround adds another layer of cost to an already premium market, with analysts projecting the closures could raise consumer gasoline costs by between 5 and 15 cents a gallon.

The next major catalyst is the April 30 deadline for suppliers to offset the record Q3 LCFS deficits. The program's inventory of credits has already shrunk, and the 1.7 million metric tonnes deficit swing from the third quarter creates a near-term compliance pressure that will likely keep credit prices elevated. This deadline forces suppliers to buy credits, directly injecting demand into the market.

Watch the freight cost differential. The economic appeal of shipping US-refined gasoline on cheaper foreign vessels has been waning recently, as US sanctions relief on Venezuela narrowed the cost gap. If freight costs continue to rise, shipments of US gasoline could become too expensive to compete with supplies from South Korea or India, potentially shifting the import mix but not eliminating the need for costly long-haul routes.