Jet fuel: California stocks at 3-year low as Middle East unrest

California's jet fuel inventories have slipped to levels not seen in roughly three years, raising supply concerns for airlines and energy markets. The California Energy Commission (CEC) reported that jet fuel stocks stood at just over 2.6 million barrels as of April 17, down from around 3.2 million barrels two years earlier.

The decline reflects a mix of regional refinery closures and conversions, alongside disruptions in global crude supplies driven by unrest in the Middle East. S&P Global noted inventories hit a roughly 28-month low and highlighted that recent refinery shutdowns have removed a significant share of the state's refining capacity, constraining local product availability.

Tighter inventories have pushed jet fuel prices higher, squeezing airline operating costs and increasing the risk of route cancellations or capacity cuts on less-profitable services. Market reports indicate a year-on-year inventory drop in the range of 20–25%, underscoring limited short-term resilience in the West Coast supply chain.

In the broader context, the situation underscores structural shifts in California's fuel system: regulatory pressures and a wave of refinery repurposing toward renewable products have altered the product slate available from remaining facilities. Federal and state agencies are monitoring storage and minimum inventory discussions as policy options to bolster resilience.

Analysts say the coming weeks will be critical as airlines assess hedging positions, adjust schedules and potentially re-route supplies. Near-term volatility in jet fuel markets appears likely, while medium-term relief would depend on increased imports, refinery restarts or changes in regional inventory policy. Market participants will closely watch updated CEC refinery stocks and any announcements from major refiners.