Diesel and Refining Capacity Set to be the Inflationary Impact The Fed Can’t Control

Yesterday in California, by GasBuddy

• As of September 11:Statewide regular: about $5.93/gal (AAA/Gasolytics).
• Statewide diesel: about $7.98/gal.
• Multiple Bay Area stations — San Jose and Santa Clara — maxed diesel pumps at $9.999.
• National diesel: first print above $6.
• GasBuddy’s Patrick De Haan: record diesel “will impact every cargo, shipment, every delivery Americans are taking, and [is] likely to reignite inflation up and down the supply chain.”

The user’s “over $8” threshold is not a stretch. Diesel is already there across much of the state; some boards cannot physically show the real price.

Second-order inflation: diesel is a tax on everything that moves

Households see gasoline. The CPI sees diesel later, and in more places.

Diesel powers the tractor, the combine, the reefer truck, the container dray, the excavator, and the locomotive. U.S. commercial transport burns on the order of 120 million gallons a day. A $1/gallon move is roughly $120 million per day in direct surcharge. From late February through August, the war-era pump increase of about $1.61/gallon already implied something like $35 billion in extra commercial diesel cost — before Friday’s new highs.

americanactionforum.org

That cost does not stay at the truck stop:

• UPS and FedEx fuel surcharges have been reported as high as ~24%; some container fuel surcharges far higher.
• Kroger’s CEO said the pressure on food retail “is actually going to mount.” Smithfield’s CFO said the impact is “beginning to flow through in the second half.”
• PPI for Gulf Coast diesel was up ~44% year-over-year in mid-summer data; truck transportation PPI was already up ~8%. Core CPI has lagged because pass-through takes one or two inventory turns. That lag is closing.
• August CPI held at 3.4%, with gasoline a visible contributor. Producer prices accelerated. Markets have repriced the odds of a Fed hike. None of that adds a hydrocracker in Richmond or a berth in Long Beach.

How large an “uncontrollable” hit?

This is a supply shock in a specific molecule, not an overheating labor market.

Direct energy in CPI is only one slice. The dangerous piece is core goods and food-at-home once freight and farm diesel are embedded.
Oxford Economics and others still describe the core pass-through as “small but growing.” RSM has sketched a path toward ~4.5% headline if the energy shock persists, with the tail determined by Hormuz and how fast damaged stills return.

A useful bound: if national diesel stays $1.50–$2.00 above the pre-war baseline through winter, the freight-only surcharge is $180–$240 million per day. Annualized, that is $65–$90 billion before retail markup, agricultural yield effects, and jet-fuel bleed into ticket prices.

Rate hikes can crush demand for discretionary gasoline trips. They cannot make a Russian AVT unit restart, open Hormuz, or widen the All-American Pipeline. Treasury liquidity operations cannot dock an extra MR in San Pedro if the tank farm is full of the wrong spec. That is the definition of an inflation impulse outside the policy instruments.

What Washington can still do: the Defense Production Act

The Trump administration has already put refining inside the DPA perimeter.

April 20, 2026: Presidential determination under DPA Section 303 — domestic petroleum production, refining, and logistics (pipelines, storage, marine terminals) are “essential to the national defense.” DOE was authorized to make purchases, commitments, and financial instruments.

September 8: An order adjusting DPA delegations so Interior and Energy can act independently on energy authorities.

This week: Reuters, citing sources after a White House meeting with nearly a dozen refiners, reported the administration is weighing how to use the DPA to expand refining capacity. Executives’ message was blunt: federal dollars move more barrels, faster, if they go to efficiency, turnarounds, and expansions at existing plants — maintenance dollars — rather than a greenfield that takes years. Utilization is already ~98%.

That is the right sequencing. The constraint this winter is not a missing 200,000-barrel nameplate in 2029. It is deferred maintenance colliding with maxed units and a world short on diesel.

Brownsville helps Texas. It does not rescue California this year.

America First Refining’s Port of Brownsville project — about 168,000 b/d of Permian light crude into gasoline, diesel, and jet — has been billed as the first new U.S. Gulf Coast refinery in nearly 50 years. Fluor has the FEED. The political announcement was in March. The engineering reality is slower: construction start is targeted around late 2027 (the TCEQ permit dies if dirt is not turned by October 19, 2027), mechanical completion late 2028, first full year often described as 2029. Reliance is in talks on offtake — which means a slice of those barrels can leave the country.

Even on the optimistic path, Brownsville is a Texas and export-dock story unless those products move west by water or a pipeline that does not yet exist. It will not refill a Bakersfield rack in Q4 2026.

Crack spreads, empty tanks, and how long “zero-margin storage” lasts

This is the analyst consensus, stripped of adjectives:

The diesel crack has detached from crude. NY Harbor ULSD versus WTI printed about $107/bbl on September 1. Gulf Coast assessments were not far behind. Pre-war cracks were ~$15–$25. The 3-2-1 basket is elevated because one leg — distillate — is in a different market.

What they are saying about duration:Goldman Sachs more than doubled its 2027 diesel-margin forecasts, to about $63/bbl in the U.S. and $49 in Europe, citing outages 60% above seasonal norms and Russian export bans.

• EIA STEO (this week): diesel cracks stay above $2/gallon (~$84/bbl) through November, then ease through mid-2027. Retail diesel for Q4 was marked up 14% from the prior outlook. Inventories are the binding constraint, not crude.
• Jeff Currie and others: the crisis is in products, not the crude tape. High prices are already the cure — but diesel demand is inelastic in the short run. Trucks and combines do not switch fuels because Powell speaks.
  RBN / trade desks: 2026 is the year the diesel crack cleared $100 and exposed how brittle the global refining system had become after a decade of closures and underinvestment.

When do “zero-margin storage supplies” get solved?
Not this heating season. Distillate stocks are already at 20-year seasonal lows before winter demand. Russian secondary units need half a year or more. Gulf plants damaged in the Iran war are on a Q4 2026–Q1 2027 restart glide path in the optimistic Kpler case, with full pre-war utilization later. New U.S. steel is 2028–29. The inventory rebuild that would crush cracks back to $20 requires either peace and parts or a demand crash. Rate hikes can contribute to the second. They cannot deliver the first.

Until stocks rebuild, every barrel of diesel in tank is priced as if it were the last one. That is what a zero-cushion market looks like.

Bottom line

The inflation the Fed can control comes from too much money chasing too many goods. The inflation arriving now is too few working refineries chasing a diesel system that still has to feed a continent.

Wars and drones took Russian and Gulf stills offline. California is retiring its own while Gavin Newsom brags about the war on oil and gas companies. The Panama Canal is rationing the detour. Pumps in the Bay Area have run out of digits. Crack spreads above $100 are the market’s way of screaming for capacity that policy, permitting, and geopolitics will not produce on a central-bank calendar.

DPA money for turnarounds and incremental barrels is the one tool that can add supply inside a year. Brownsville is welcome and insufficient. Until global runs recover and tanks refill — a 2027 story on the current analyst maps — diesel will keep leaking into freight, food, and core goods. That inflationary impact is beyond the Fed’s control. It can only decide how much of the rest of the economy to cool while the stills are down.

If the Fed raises rates, they will fail and bring the already stressed economy crashing. If the Fed lowers rates, they can help the home market, but the H-1 B visa scandal and the illegal migrant problem have set the stage for areas of a real estate crash that recover faster at a lower rate.

The bottom line. President Trump has assembled the greatest administration in U.S. History, and they are running out of runway, levers, and tricks to solve problems. The Fed is now in a no-win scenario, and it begs the question of why it is even in existence, as it is a drain on the US, and not a solution.