How Trucks, Heating Oil, and Exports Shape U.S. Diesel Prices

The diesel in a delivery truck, the fuel powering a tractor, and the heating oil warming an older Northeast home all draw on the same broad pool of petroleum products. Overseas buyers compete for that pool, too. To understand diesel prices, you therefore need to look beyond the truck stop—to farms, winter weather, and international trade.

One Fuel Family, Several Different Jobs

Distillate fuel oil is a category of petroleum products that includes diesel fuel and heating oil. These fuels are not necessarily identical—different uses can require different specifications—but they draw on closely related refinery output.

That creates a connection between activities that might otherwise seem unrelated:

• Trucks burn diesel to move goods.
• Construction equipment uses it to dig, lift, and haul.
• Farm equipment uses it for planting, harvesting, and other fieldwork.
• Homes and other buildings burn heating oil for warmth.
• Foreign buyers purchase U.S.-produced distillate for their own transportation, industry, and heating needs.

A truck fleet, a farm, and an oil-heated home have different needs, but their fuel purchases can put pressure on the same broad supply pool.

This does not mean every increase in heating demand produces an immediate rise at every diesel pump. Inventories, production, and the ability to move fuel between regions all matter. But it explains why diesel prices respond to more than road traffic.

How Much Goes to Trucking, Farming, and Heating?

The best available figures do not form one neat, current breakdown. They come from different years and reporting systems, so you should treat them as separate benchmarks—not slices of a single pie.

Sources: U.S. Energy Information Administration, or EIA, diesel use, historical distillate sales, and state fuel-use estimates.

Transportation dominates—but it is not all trucking

The clearest recent headline is that transportation used about three-quarters of U.S. petroleum distillate in 2025. Trucking is central to that demand, but the category also includes buses, trains, boats, and other transportation.

The distinction matters: saying “transportation uses 75%” is supported by the data; saying “trucking uses 75%” is not.

Farming is a smaller, distinct source of demand

In EIA’s detailed survey for 2020, farms purchased about 3.73 billion gallons of distillate out of 59.07 billion gallons in total distillate sales—roughly 6%.

EIA has suspended that survey, so this is a historical benchmark, not an estimate of farming’s share in 2025.

The accounting also follows the activity using the fuel. Diesel burned in a tractor generally sits outside the transportation-sector total. Diesel burned by a truck carrying grain to market belongs to transportation. Both support agriculture, but they are recorded differently.

Home heating is modest nationally, important regionally

EIA’s 2024 estimates put residential distillate use at 78.6 million barrels, compared with 1.388 billion barrels overall—about 6%.

“Residential” is a useful approximation for home heating oil, but it is not a separately measured heating-oil-only category. It also does not capture every building that burns oil for heat.

Most importantly, a modest national share can hide a strong regional concentration. That is where the Northeast comes in.

Why the Northeast Still Uses So Much Heating Oil

The explanation is mostly history and infrastructure, with cold winters making that legacy consequential.

Older homes inherited oil-heating systems

Heating-oil systems became common in older Northeast housing, and many remain in service. EIA found that about half of U.S. homes using heating oil were built before 1950.

Once a home has an oil-fired heating system and a storage tank, continuing to use them can be simpler than changing fuels. Oil arrives by truck; the house does not need a connection to a gas pipeline.

Switching to natural gas requires both:

1. An available gas connection, which is not present everywhere.
2. Compatible heating equipment, which may mean replacing the existing system.

That is why a fuel choice can persist for decades: the decision is not just about today’s fuel price, but also about the equipment and infrastructure already in place. EIA’s discussion of heating-oil homes describes this older housing base.

Concentration does not mean dominance

About 82% of U.S. households that primarily used heating oil in winter 2023–24 were in the Northeast, according to EIA.

Read that carefully: it does not mean 82% of Northeast households used oil. Natural gas and electricity are widely used there, and heating-oil use has been declining as households replace older systems.

Instead, it means the country’s remaining oil-heated homes are heavily clustered in one cold region. A cold Northeast winter can therefore create a concentrated increase in demand for the same broad distillate category that includes diesel.

How Exports Connect U.S. Prices to Overseas Demand

U.S. refiners do not sell only to U.S. customers. They can also sell distillate abroad.

In 2025, the United States exported about 1.25 million barrels per day of distillate, compared with domestic use of roughly 3.9 million barrels per day, according to EIA.

Those numbers show that exports are substantial. But they require an important distinction:

Exports are separate from domestic demand. Comparing export volume with U.S. consumption does not tell you what share of domestic demand was “exported.”

Another buyer changes the price suppliers can obtain

Imagine you sell a product to local customers, but an overseas customer offers more. If you can ship it profitably, that overseas offer becomes relevant to what you are willing to accept at home.

Distillate works similarly:

1. Overseas buyers offer more for fuel.
2. U.S. suppliers gain an incentive to export, where shipping economics allow.
3. Domestic buyers may need to pay more to retain available supply.

The pressure can be stronger when inventories—fuel already held in storage—are low. With less stored fuel available as a buffer, there is less room to absorb competing demand.

The reverse can also happen: weaker overseas demand can reduce the incentive to export and ease pressure on U.S. prices.

Exports are not automatically the cause of a spike

Rising exports and rising domestic prices can occur together without exports being the original cause.

A global shortage, for example, can simultaneously:

• Raise the price overseas buyers are willing to pay.
• Attract more U.S. exports.
• Raise prices for U.S. buyers.

In that situation, both the exports and the higher domestic price reflect the same underlying tightness. Simply observing them rise together does not establish which caused which.

The Big Picture: A Shared Market, Not Separate Fuel Silos

Trucking provides a large foundation of demand. Farming and construction add other working uses. Heating oil adds a geographically concentrated winter need. Exports connect U.S. suppliers to buyers elsewhere in the world.

You should not combine the available percentages into a single demand chart: they mix years, categories, and measurement methods. But together they reveal the essential pricing mechanism.

U.S. diesel prices reflect competition for distillate across uses, regions, and countries. When several buyers need more fuel at once—and especially when stored supplies are thin—the price U.S. buyers must pay can rise even if demand at the local truck stop has barely changed.