Direct answer: WTI crude oil prices are driven mainly by OPEC+ supply decisions, weekly U.S. inventory data, global demand, and geopolitical risk around major producing regions and shipping routes. The benchmark on The Daily Board is NYMEX WTI (CL), whose contract specs are published by CME Group. Crude sits on a grain board because farm diesel, freight and biofuel policy all run through the energy market.
Supply: OPEC+ and the rest of the world
The Organization of the Petroleum Exporting Countries, often acting with partners as OPEC+, can add or withhold supply by changing production targets. Announcements, and whether members then follow those targets, regularly move WTI and the other international benchmarks. OPEC's official monthly analysis is the Monthly Oil Market Report.
Non-OPEC producers, including the United States, also add or subtract barrels. A faster-than-expected rise in U.S. or other non-OPEC supply can weigh on prices even when OPEC+ is holding back; a stall in that growth can tighten the balance. The International Energy Agency's Oil Market Report is a widely used official monthly read on world supply, demand and stocks.
Inventories and the weekly EIA report
Oil that has been produced but not yet used shows up in inventories. A larger-than-expected weekly build in U.S. crude or product stocks typically weighs on WTI; a draw supports it. The official U.S. release is the EIA Weekly Petroleum Status Report, usually published mid-week, with Cushing, Oklahoma stocks watched closely because Cushing is the delivery point for the NYMEX contract.
The EIA's monthly Short-Term Energy Outlook puts those weekly figures in a longer supply-and-demand forecast. Inventory news matters most when the market is already unsure whether the world is over- or under-supplied.
Demand, the dollar and geopolitics
Crude demand tracks the world economy, seasonal fuel use (summer gasoline, winter heating and diesel), and China's industrial and transport use. A softer demand outlook weighs on prices; a firmer one supports them. Because oil is priced in U.S. dollars, a stronger dollar can pressure crude, and a weaker dollar can support it, all else equal.
Geopolitical risk around major producers or chokepoints, including the Strait of Hormuz, can lift prices when traders think barrels may not reach the market. Those premiums can come off quickly if the disruption does not materialize. The Daily Board reports that risk when it is moving the close; it is not a forecast of any particular conflict.
Why crude sits on a grain board
Energy costs flow into Prairie agriculture in more than one way:
Farm diesel and freight: a higher crude price raises the cost of fieldwork, drying and moving grain.
Biofuels: renewable diesel and biodiesel use vegetable oils as feedstock, so crude and biofuel policy can move soybean oil and, through it, canola. See What Moves Canola Prices?.
Natural gas: often trades on the same energy news days and matters for nitrogen fertilizer costs. The Daily Board explains the link in Why Crude and Natural Gas Sit on a Grain Board.
Frequently asked questions
What is the biggest regular driver of WTI crude?
The supply-and-demand balance: OPEC+ production decisions, non-OPEC supply, and global fuel demand. Weekly U.S. inventory reports are the most regular official update on whether that balance is tightening or loosening.
What is the EIA weekly inventory report?
The U.S. Energy Information Administration's Weekly Petroleum Status Report. It updates U.S. crude and product stocks, including Cushing, and often moves WTI on the day it is released if the figures differ from what the market expected.
Why do OPEC+ decisions move the market?
OPEC+ members control a large share of internationally traded crude. A decision to add or withhold supply, and evidence that members are following it, can change the expected world surplus or deficit.
Why does crude sit on a grain board?
Because farm diesel, freight and biofuel policy tie energy prices to grain and oilseed markets. A move in crude can change production costs and, through vegetable oil demand, canola and soybean oil.
See also Why Crude and Natural Gas Sit on a Grain Board, What Moves Canola Prices?, and Contract Rolls Explained.
