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California’s refinery sector is contracting, and the explanations are usually not as sophisticated as operators typically counsel. When refinery homeowners announce closures, they often level to the burden of environmental laws, the prices of compliance, or fines from state companies. These components are actual, however they aren’t decisive. The extra elementary driver is demand. Gasoline consumption in California has been declining for almost a decade. That pattern alone reshapes the economics of refining, eroding margins and making long-term reinvestment in amenities unappealing. The closures we’re seeing now are much less about regulators pushing companies out and extra concerning the market pulling the ground out from underneath them.
Two main refineries in California have introduced plans to shut, and collectively they account for a big share of the state’s gasoline provide. Phillips 66’s Wilmington refinery in Los Angeles, with a capability of about 139,000 barrels per day, and Valero’s Benicia refinery within the Bay Space, with about 145,000 barrels per day of capability, are each slated to wind down operations within the subsequent two years. Refineries usually produce about 45% to 50% of their output as gasoline, which implies these two amenities collectively present within the vary of two billion gallons yearly. With California’s complete gasoline consumption at about 13.4 billion gallons in 2024, the closures signify roughly 15% of the state’s gasoline provide, a discount that might be felt instantly in a tightly balanced market.
Governor Newsom and California lawmakers are usually not merely watching refineries shut down with out response. The state authorities has opened discussions with operators and potential consumers in an effort to maintain amenities like Valero’s Benicia refinery working, and has even floated the potential for monetary or regulatory concessions to delay closures. Legislators have thought of bailout mechanisms and incentives to protect native jobs, stabilize gas provides, and defend tax revenues that communities rely upon. These interventions are framed as a technique to handle volatility within the quick time period, however additionally they reveal the political problem of balancing an vitality transition with the financial realities of cities and staff tied to the refining business.

Gasoline consumption in California peaked across the center of the final decade. In 2015, gross sales had been simply over 15 billion gallons. By 2024, that quantity had dropped to about 13.4 billion gallons. That’s an 11% decline over lower than ten years. The change has not been erratic. It has been regular, pushed by extra environment friendly inner combustion engines, better adoption of hybrids, and the fast improve in electrical automobile gross sales. The state has layered coverage on high of these forces, with the Superior Clear Automobiles II mandate requiring 100% zero-emission passenger automobile gross sales by 2035. That provides certainty to a pattern that was already clear. With a few quarter of latest automobile gross sales in California now electrical, the alternative charge of gasoline-powered vehicles is tipping the steadiness. Yearly, extra of the fleet runs on electrons as an alternative of gasoline, and yearly the gasoline market shrinks a bit of additional.
Diesel gas tells a unique story. In contrast to gasoline, demand for diesel has held regular. In 2017 taxable diesel gross sales had been about 3.1 billion gallons, and in 2024 the state reported 3.5 billion gallons. That represents stability slightly than decline, and it displays the cussed nature of industrial quality transport, freight, and agricultural sectors. Vehicles, buses, and tools nonetheless overwhelmingly run on diesel. California has made progress in introducing renewable diesel and biodiesel, that are displacing petroleum diesel within the gas combine, in addition to electrification of some buses and vehicles, however the general gallons offered haven’t dropped. Meaning refinery output remains to be supported on one aspect of the product slate, whilst gasoline erodes on the opposite. The issue for refiners is that gasoline is the most important single product from most crude runs. Dropping that anchor quantity reduces the financial justification for conserving vegetation open, even when diesel stays in demand.

California’s gasoline demand is projected to proceed falling sharply over the following decade as electrical automobile adoption accelerates and effectivity requirements tighten. With the Superior Clear Automobiles II mandate requiring 100% zero-emission automobile gross sales by 2035 and EVs already making up roughly 1 / 4 of latest automobile purchases, and seven% annual inner combustion automobile retirements, annual gasoline demand is more likely to decline by round 40% or extra by the mid-2030s. This trajectory signifies that by 2035 California may very well be burning fewer than 8 billion gallons per yr, chopping deeply into the volumes that when supported its refining sector.
When corporations declare laws are forcing their hand, they’re partly proper and partly deflecting. Compliance prices and fines for emissions improve working bills. If the marketplace for gasoline had been steady or rising, refiners would take in these prices as a part of doing enterprise. As a substitute, they face a market the place volumes are falling yr after yr and the speed of decline is accelerating, which modifications the calculation. The prospect of spending lots of of tens of millions on upgrades to maintain a facility working is difficult to justify when the principle product is dropping prospects. In that surroundings, laws grow to be the excuse for closures that had been inevitable anyway. The true story is demand destruction.
Refinery closures create provide dangers, and California has a historical past of worth volatility when vegetation go offline. Taking lots of of 1000’s of barrels per day of capability out of the system removes a big share of gasoline provide. In a market that’s already comparatively remoted geographically, that may set off short-term shortages and worth spikes till imports or different refineries compensate. These provide shocks can really feel like crises to shoppers, however they’re truly signs of transition. Disruptions are usually not failures of coverage or planning. They’re pure options of a system transferring from one dominant expertise to a different. The identical sample has performed out in different sectors when tipping factors had been reached. Coal vegetation shut down earlier than renewable vitality was absolutely scaled. Movie digital camera factories began shuttering earlier than digital pictures was perfected. Typewriter factories had been deserted lengthy earlier than phrase processing was common. Petroleum refining is now experiencing the identical course of.
The suggestions loop is essential to acknowledge. As refineries shut and gasoline turns into costlier or much less handy, electrical automobiles grow to be extra engaging. Charging infrastructure is increasing, possession prices for EVs are dropping, and coverage helps are agency. Shoppers weigh their choices, and the steadiness ideas towards electrical. As extra EVs are offered, the gasoline market contracts additional, and the case for conserving refineries open will get weaker. Gasoline stations start to shut in parallel, upkeep outlets lose prospects for oil modifications and exhaust repairs, and components suppliers see declining demand. Insurance coverage corporations increase premiums on older ICE automobiles as dangers rise and components grow to be tougher to supply. Every step reinforces the erosion of the interior combustion ecosystem.
California is forward of a lot of the world on this respect. With aggressive mandates and robust EV adoption, the state is crossing thresholds sooner than others. As soon as 15% to 40% of latest gross sales are electrical, as California is experiencing now, the comfort of proudly owning an ICE automobile begins to erode. When 40% to 80% of latest gross sales are electrical, the unraveling of the gasoline and diesel assist system accelerates. California’s refineries are closing within the midst of those tipping factors. The closures are usually not anomalies or remoted missteps. They’re indicators of systemic change.
For policymakers, the temptation is to intervene, to sluggish closures or subsidize continued operation within the identify of stability. That misses the bigger level. The decline of gasoline demand is just not reversible. Attempting to carry again refinery closures delays the inevitable and misallocates public funds. The higher use of assets is to scale the brand new system. California will want extra electrical energy era, stronger transmission, expanded charging infrastructure, and planning for workforce transitions in refining and gas distribution. These are the investments aligned with the trajectory of demand.
The state’s expertise with diesel might be considerably completely different, because the demand plateau is just not but a decline. However the long-term forces are related. Zero emission vehicles and buses are scaling, mandates are in place, and low-carbon fuels are taking bigger shares of the remaining market. Diesel demand will finally observe the identical curve as gasoline, simply on an extended time horizon. Refineries can not maintain themselves on diesel alone when their economics depend on giant gasoline volumes.

Hydrogen demand may also decline as these refineries shut, eradicating a big block of consumption from the state’s industrial profile, in addition to about 800,000 tons of CO2e emissions per yr associated to its manufacturing. Valero’s Benicia facility and Phillips 66’s Wilmington plant collectively eat within the vary of 100,000 to 130,000 tons of hydrogen yearly, primarily produced from pure fuel in on-site steam methane reformers. That may be a significant fraction of California’s refinery hydrogen load, and when the amenities go darkish the marketplace for that hydrogen disappears with them. In my broader projection of hydrogen demand throughout sectors, refining stays the one largest client for the following decade, however closures like these speed up the autumn. As gasoline and diesel demand shrinks and refineries observe, the largest present use case for hydrogen steadily erodes. The narrative of hydrogen as a development gas collides with the fact that its largest industrial market is contracting in lockstep with the decline of oil.
Each refineries refine heavy bitter crude sourced from quite a lot of home and worldwide producers together with Canada. As I labored out a few years in the past, they require far more hydrogen per barrel than refineries that course of gentle, candy crude, about 7.7 kg per barrel versus 1.5 to 2 kg per barrel. As international gasoline and diesel demand contracts, the heavier crude might be first off the market as a result of it’s costlier to course of. About 60% to 70% of California’s crude consumption in its 15 refineries is of heavy, bitter crude, and it’s seemingly vital that two heavy, bitter crude refineries are those which have introduced closures.
California’s refinery closures are finest understood as demand-driven, not regulation-driven. Provide shocks will include them, however these are regular options of a disruptive transition. Studying the indicators accurately is vital. What is occurring in California now will occur in different areas as EV penetration deepens. The state is just displaying the remainder of the world what the way forward for gasoline and diesel refining seems to be like as soon as the tipping factors of electrification are crossed.
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