The Iran War Energy Cost Tracker, developed by Brown University's Watson School of International and Public Affairs, has updated its estimate of the daily cost that the war beginning February 28 has imposed on US consumers. According to the real-time data, the US and Israeli strikes on Iran have generated more than $37.6 billion in additional US consumer energy costs to date. About $20.5 billion of that figure stems from higher oil prices, while diesel-related extra costs reach $17 billion.
By the tracker's calculations, an average US household is paying roughly $286 more per month due to elevated gasoline and diesel prices. As of May 11, the national average price of regular gasoline stood at $4.52/gallon, according to American Automobile Association (AAA) data — up from $3.14 a year earlier. The price spike reflects severe restrictions on Strait of Hormuz transits since late February and the impact of Israel-Iran strikes on the global refinery chain.
The Watson School team uses observed Energy Information Administration (EIA) price series and a 60-day pre-war baseline; deviations from baseline are multiplied by household counts and consumption averages to generate the aggregate excess cost. Economists emphasise that the gasoline and diesel shock affects not only motorists but also the logistics costs of food and other consumer goods. Road freight costs in the US have climbed roughly 12–15%, and the pass-through to retail prices is now visible from mid-year.
From a supply chain perspective, the tracker's data has become a reference point for measuring the first-round real-economy impact of the Hormuz crisis. US-based trucking operators are renegotiating fuel-indexed clauses; retail chains are evaluating less frequent deliveries and load-consolidation options with suppliers. Combined with Saudi Aramco CEO Amin Nasser's statement that the market has lost roughly 1 billion barrels in the past two months, cost pressure is expected to remain elevated through the second half of the year.
Key Takeaways:
1. Brown University Watson School Tracker: $37.6B in extra US consumer energy costs since February 28.
2. Roughly $20.5B from oil price surge and $17B from diesel.
3. Average US household paying ~$286 more per month on fuels.
4. US gasoline at $4.52/gallon on May 11 vs $3.14 a year ago.
5. Shock translates to a 12-15% fuel cost pressure across US retail logistics chains.
