You felt it the last time you filled up. California is paying $6.13 a gallon for regular gasoline right now — 36% above the national average — and the people who study this for a living are telling you it's not going back to normal anytime soon. Not this summer. Maybe not next year. Possibly not until mid-to-late 2027 at the earliest. Welcome to the Iran War energy shock, the largest supply disruption in the history of the global oil market. And California, for a handful of very specific reasons, is getting hit harder than almost anywhere else.

What Actually Happened

On February 28, 2026, the United States and Israel launched military operations against Iran. Within days, Iran responded by effectively closing the Strait of Hormuz — the narrow waterway between Iran and Oman through which roughly 20% of the entire world's oil supply passes every single day. The International Energy Agency called it "the largest supply disruption in the history of the global oil market." The IEA's head said it was "the greatest global energy security challenge in history." Those are not phrases these organizations use lightly.

Brent crude oil prices surged 10-13% in the first days of the conflict, hitting around $80-82 per barrel immediately. Analysts warned prices could hit $100 per barrel if the disruption held. The vast majority of oil moving through the Strait is bound for Asia — China, India, Japan, South Korea consume roughly 70% of it — but because oil is priced on a global market, when supply drops anywhere, prices rise everywhere. American drivers started feeling it at the pump almost immediately.

A ceasefire was announced on April 8th. Tanker traffic through the Strait began to resume. But "began to resume" is doing a lot of work in that sentence. As of today, traffic through the Strait remains far below pre-war levels. Critical oil infrastructure in Iran and several Gulf Cooperation Council countries was damaged or destroyed during the fighting. That infrastructure cannot be switched back on overnight. GasBuddy analyst Patrick De Haan told CBS News it will be "a very long, multi-month to multi-year process for things to fully normalize," and that pre-war fuel prices won't return "until potentially mid-to-late 2027."

Why California Is Getting Hit Hardest

California doesn't just import a lot of oil. It imports about three-quarters of its oil from foreign nations and Alaska — and roughly 30% of its supply comes specifically from the Middle East, especially Iraq and Saudi Arabia. That's a much higher dependence on Middle Eastern crude than most other U.S. states, which have better access to domestic production from Texas, North Dakota, and the Gulf of Mexico.

Add California's unique regulatory environment — the state requires a specific blend of gasoline that meets its own emissions standards and can't simply be substituted with fuel from other states — and you have a recipe for price spikes that consistently exceed the national average during any supply disruption. The California Energy Commission confirmed that between February 28 and June 15, retail gas prices rose by $1.10 per gallon in California. That's in line with the national average increase of $1.08/gallon, which means California's premium over the rest of the country was already baked in before the war started — the Iran crisis just pushed everything higher from a higher starting point.

There's another issue the California Petroleum Market Oversight office flagged in its latest report: a persistent and growing gap between branded and unbranded gasoline prices in the state. As of 2026, branded gas costs $0.31/gallon more than unbranded in California. The national average gap is just $0.06/gallon. Chevron's premium over local competitors has grown from $0.19/gallon in 2010 to more than $0.65/gallon today. The state's investigative counsel are already contacting approximately 20 of the highest-priced stations to determine whether their prices are justified by actual input costs — or whether somebody is profiteering.

Is There a Shortage Coming?

The short answer: not right now, but the window is narrow. Siva Gunda, vice chairman of the California Energy Commission, testified before a state Assembly committee that California could confidently forecast gasoline supply through mid-June — which we've now passed. His exact words about what comes after were not reassuring: "Beyond that, based on what we're hearing from the industry and what we've observed, the pricing will move molecules to California, but it will come at a price."

Translation: supply will find a way to California, but it's going to cost more to get here. That cost gets passed to you at the pump. The California Energy Commission is monitoring supply conditions daily alongside the Petroleum Market Oversight office. West Coast product inventories have been consistent with — and in some cases healthier than — the rest of the country. That's the good news. The bad news is that Goldman Sachs projects higher energy prices will erode consumer spending power through the rest of 2026, hitting lower-income households hardest since they spend a proportionally larger share of their budgets on fuel and food.

What Sacramento Is Doing

Governor Newsom has been loud about this. His office put out a report this month titled "Over 3 Months Later: Donald Trump's Iran War Continues to Drain American Wallets" — which tells you pretty clearly where the state's political framing sits on this issue. The Governor's office notes that California has the third-largest oil refining sector in the country and argues the state's price increase is in line with national averages, suggesting California-specific factors aren't the primary driver this time around.

The state has dispatched the Petroleum Market Oversight office's investigative counsel to examine the highest-priced stations. Sacramento is also fast-tracking exemptions to allow alternative fuel blends during the crisis. And the long-simmering debate over California's dependence on imported oil has gotten louder — the refinery closures the state has allowed or encouraged as part of its clean energy transition are looking a lot more consequential now that global supply is constrained.

Where Prices Go From Here

University of Houston energy economist Ed Hirs put it bluntly: even if peace fully breaks out tomorrow, "it would probably be eight months before we could see production and throughput from the strait restored and inventories restored, so that we could get back to a prewar equilibrium." That math puts a real price recovery somewhere around the end of 2026 at the absolute earliest — and that's assuming no further escalation in the Middle East, no new supply disruptions, and a smooth reopening of Strait traffic that hasn't materialized yet.

The honest assessment: California drivers are probably paying somewhere between $5.50 and $6.50 a gallon through the rest of this summer. Fall could bring some relief if the Strait normalizes and refineries finish transitioning to winter blends. A return to $4-something is possible by early 2027. A return to pre-war prices — California was averaging around $4.80/gallon in late 2025 — probably doesn't happen until 2027 at the earliest, and only if the geopolitical situation holds.

In the meantime, the same arithmetic that always applies during California gas spikes applies now: unbranded stations are charging significantly less than Chevron and Shell for chemically identical gasoline. The difference right now is $0.31/gallon on average — and in some parts of the state, considerably more. Your car doesn't know the difference. Your wallet does.