Product Supplied, Explained

1. The answer first: what it is, and the latest figures

Product supplied is the number the oil market uses for US demand. It is not a count of what drivers, airlines, and furnaces burned. It is the EIA's measure of how much product disappeared from primary supply: the refineries, natural gas plants, blending plants, pipelines, and bulk terminals where the EIA's surveys can see the whole flow. The EIA's glossary definition is the honest one: product supplied approximately represents consumption, because most of what leaves the primary chain is sold onward and consumed not long after. Every Wednesday, the figure arrives inside the Weekly Petroleum Status Report. The latest week in the data archived on this site, the week ending October 9, 2026:

Three readings fall out of that table immediately. Gasoline is a little under two fifths of all US petroleum disappearance, which is why a single product's driving season steers the whole demand story. Distillate, the diesel and heating oil pool, is about a fifth, and it answers to freight and winter more than to motorists. And the total, 21,361 thousand barrels a day in the latest week, sat 1.3 percent below its 52 week high of 21,648 and above its 52 week low of 19,226: the band the US demand debate actually lives in is a few percent wide, which is why small weekly moves get argued over so hard.

2. The formula: an accounting identity, not a survey of buyers

Product supplied is computed, per product, from the supply side. In the EIA's formulation: field production, plus transfers to crude oil supply, plus biofuels plant net production, plus refinery and blender net production, plus imports, plus net receipts on a district basis, plus adjustments, minus stock change, minus refinery and blender net inputs, minus exports. Compressed into one line:

Product supplied = production + imports + adjustments - stock change - refinery inputs - exports

Read it as a warehouse ledger. Everything that entered primary supply is on the left. Subtract what is still sitting in primary storage (the stock change), what went back into a refinery as an input, and what left the country (exports). The remainder had nowhere else to go: it disappeared into the domestic distribution chain. Two terms deserve attention. The adjustments line is a balancing item that absorbs survey and statistical error, and for finished gasoline it reconciles the product with its two surveyed components, gasoline blending components and fuel ethanol, which are collected separately and never quite foot. And the stock change term is why the series is noisy: it is computed from the same primary stock surveys as the inventory headlines, so every quirk of tank measurement lands inside the demand number too.

3. Why a proxy at all: nobody can meter a continent weekly

The obvious alternative, measuring fuel where it is burned, fails on arithmetic. The United States has well over 100,000 retail gasoline stations, plus fleet depots, farms, rail yards, airports, marinas, and home heating tanks. Surveying final sales weekly would be slow, partial, and late. Surveying the primary chain is the opposite: a limited population of refiners, blenders, importers, pipeline companies, and bulk terminal operators handles effectively the entire national flow before distribution, and the EIA surveys that population. What leaves their tanks for the domestic market is the closest measurable thing to consumption, and it is available five days after the week ends.

The cost of the shortcut is a known blind spot: secondary storage. Fuel sitting in a retailer's underground tanks, a distributor's depot, or an airline's fuel farm has already counted as supplied, whether or not anyone has bought it yet. In the EIA's own illustration of the effect, a refinery that moves an unusually large volume to distributors in one week produces a product supplied spike that week and a sag the next, while final sales never changed pace. The transfer is real; the demand signal is an artifact. This is not a flaw anyone is hiding. It is the stated reason the serious readers of this series, the EIA included, work with averages, the subject of section 5.

4. Reading the products separately

The total is the headline, but the information is in the split, because the products answer to different economies. Gasoline supplied is road demand: it peaks with summer driving, dips in January, and jumps around holiday weekends, and a single week containing a holiday is not comparable with the week before it. Distillate supplied is freight and heat: trucking, rail, farming, construction, and, in the Northeast, heating oil, so it carries a winter weight and tracks the goods economy more than the consumer. Jet fuel supplied is air travel, with its own holiday and summer peaks. The remainder of the total, roughly a third, is the industrial barrel: residual fuel, propane, and petrochemical feedstocks, where a single plant turnaround can move the line.

Two comparisons discipline any reading. The first is against the same week a year earlier, which strips out the season: gasoline supplied in a July week should be judged against last July, not against June. The second is the four week average against its own year-ago value, the form in which the EIA itself headlines the series. A demand story that only exists in one unadjusted week, against last week, is usually a transfer story wearing a demand costume. Our analysis page archives the weekly series so both comparisons can be made against the record rather than against memory.

5. The four week convention, and the weeks that break the single figure

The EIA presents product supplied on a four week average basis in its report highlights, and the convention is worth adopting wholesale. Averaging four weeks cancels most transfer timing: a cargo pushed into week one is missing from week two, and the mean of the two is close to the true pace. It also softens the calendar effects that plague individual weeks, like a holiday landing on a different weekday than last year. What the average cannot fix is a genuine break: a hurricane that closes Gulf refineries and ports cuts production and transfers at once, and product supplied falls for supply reasons while wearing a demand label. The honest reading of a storm week is to say so, and to wait for the average to wash the event out. The release schedule matters here too: holiday weeks shift both the data and its publication, and comparing a shifted week against an unshifted one is a quiet source of phantom demand moves.

6. What product supplied is not

• Not retail sales. It counts fuel when it leaves primary supply, which is before the distributor, the retailer, and the driver. Short-run gaps between the two are normal and usually reverse.
• Not exports-inclusive demand. Exports are subtracted by construction. World demand for US products lives in the export lines of the same report, and in the API and EIA tallies alike it is a separate quantity from domestic disappearance.
• Not final. The weekly figure is an estimate built on the weekly surveys. The monthly Petroleum Supply Monthly restates the same quantities on a fuller basis, and annual benchmarks move them again. Treat the fourth decimal of any weekly demand claim as fiction.
• Not a price signal by itself. Demand a few percent above or below last year matters to prices through inventories: strong supplied figures with rising stocks say something different from the same figures with falling stocks. The demand line and the stock lines of the report are one argument, not two.

7. Mistakes readers make with this number

• Headlining the single week. A 500 thousand barrel a day weekly swing in gasoline supplied is usually transfers, weather, or calendar, not a demand break. Check the four week average before writing the story.
• Comparing across seasons. January gasoline against July gasoline measures the calendar. Same week last year is the comparison that isolates demand.
• Calling it consumption without the caveat. The EIA's own wording is "approximately represents consumption." Dropping the "approximately" overstates what any weekly proxy can know.
• Adding crude oil on top of it. Crude oil has its own small product supplied line (crude burned on leases and by pipelines) and it is already inside the EIA's total. The mistake is adding crude production or refinery crude inputs to total product supplied a second time, which double counts the barrel on its way to becoming products.
• Reading a supply outage as demand weakness. When refineries or ports close, less product leaves primary supply because less exists to leave. The formula cannot tell a closed refinery from a quiet consumer; the rest of the report can.

8. Frequently asked questions

What is product supplied in the EIA report?

Product supplied is the EIA's measure of how much of a petroleum product disappeared from primary supply in a period: refineries, gas plants, blending plants, pipelines, and bulk terminals. The EIA says it approximately represents consumption, because most product that leaves the primary chain is sold to distributors, retailers, and end users and consumed soon after. It is published weekly in the Weekly Petroleum Status Report for total petroleum and for each major product.

Is product supplied the same as demand or consumption?

It is the standard proxy for them, not a direct measurement of them. Nobody meters every pump, furnace, and jet bridge in the country each week. The EIA surveys the primary supply chain, where a manageable number of refiners, importers, pipelines, and terminal operators handle the whole flow, and infers consumption from what leaves that chain. The EIA itself uses product supplied and petroleum consumption as near synonyms in its monthly tables, with the weekly figures understood as estimates.

How is product supplied calculated?

For each product: field production, plus refinery and blender net production, plus biofuels plant net production, plus imports, plus adjustments, minus the change in primary stocks, minus refinery and blender net inputs, minus exports. In plain terms: everything that entered primary supply, minus everything that stayed in storage, went back into a refinery, or left the country. What is left is what disappeared into the domestic market.

Does product supplied include exports?

No, and that is the point of the subtraction. Exports are removed from the total, so product supplied measures domestic disappearance only. A week of heavy gasoline exports does not inflate it. Foreign demand for US products shows up in the export lines of the report, not in product supplied.

Why does everyone quote the four week average?

Because the single week figure is noisy. Product supplied is built from stock changes, and a refiner moving a large cargo from primary storage to a distributor in one week instead of the next swings the weekly number without changing what anyone burned. Averaging four weeks cancels most of that transfer timing. The EIA presents product supplied on a four week average basis in its own highlights for exactly this reason.

Why can product supplied jump when nothing was consumed?

Because it measures transfers out of primary storage, not burning. If a refinery pushes an unusually large volume to distributors in week one, product supplied spikes that week and sags the next, even if drivers bought fuel at the same rate throughout. Retail stations are secondary storage and are not surveyed, so the weekly series sees the push, not the pace of final sales.

9. Related reading

• How to Read the EIA Weekly Petroleum Status Report - where the product supplied lines sit in the Wednesday report, and the checklist that reads them with stocks and refinery runs.
• EIA Crude Oil Inventory and Weekly Petroleum Status Report - the archived weekly series behind the figures on this page.
• API vs EIA Inventory Reports, Explained - the other survey of the same week, and why its demand-adjacent tallies differ from the EIA's.
• EIA Report Schedule, Explained - when the report carrying these figures actually comes out, including holiday shifts.
• US Crude Oil Inventory History - the stock side of the ledger that product supplied has to be read against.

Data and sources: U.S. Energy Information Administration (EIA) - glossary definition of product supplied and table definitions for the Weekly Petroleum Status Report, read October 21, 2026 (product supplied approximately represents consumption because it measures the disappearance of products from primary sources; computed as field production, plus transfers to crude oil supply, plus biofuels plant net production, plus refinery and blender net production, plus imports, plus net receipts and adjustments, minus stock change, minus refinery and blender net inputs, minus exports); EIA frequently asked questions, "How do we calculate product supplied?", read October 21, 2026 (finished motor gasoline identity: net production plus imports plus supply adjustment minus primary storage inventory change minus exports; the supply adjustment reconciles finished gasoline with its blending components and fuel ethanol); EIA Today in Energy, "Understanding petroleum product supplied", on the proxy logic and the primary versus secondary storage distinction. Weekly figures and four week averages on this page are computed at build time from the PetroEyes archive of EIA weekly data (file updated October 19, 2026; latest week ending October 9, 2026); the table values will move as the archive updates, and the method described does not change. All other figures are as published by the sources named, for the periods stated.