Brent crude jumped more than 9% in a single day this week. That kind of move used to happen once a quarter. It happened now because a ceasefire between the United States and Iran broke down, strikes resumed, and Iran redeclared the Strait of Hormuz closed (U.S. Energy Information Administration, July 2026). Crude is back near a one month high, and the strait that carries roughly a fifth of the world's seaborne oil and gas is disputed again.

If you're planning to sell your business in the next 12 to 18 months, this is not a story happening somewhere else. Rising energy costs are a live variable in the value of the deal you haven't started yet.

This is the second time this year the same sequence has played out. Brent crude ran from about $72 a barrel in late February to roughly $113 by late March, retreated toward the mid $60s to low $70s after a June ceasefire, and has now reversed again (EIA, July 2026). Each time, the retreat looked like the story was over. Each time, it wasn't.

That pattern matters more than any single price level. An owner who tells a buyer "energy costs spiked earlier this year but things have settled down" is describing a snapshot from a situation that has already proven it doesn't hold still. A buyer underwriting your business for the next three to five years isn't asking what oil costs today. They're asking whether your margins survive the next move, whichever direction it comes from.

Energy exposure shows up in a business in two different ways, and owners often only think about one of them.

The first is operating expense: fuel, freight, utilities, and any raw material where energy is a real input cost. This hits the income statement immediately. A distributor paying a fuel surcharge on every shipment, a manufacturer buying electricity-intensive inputs, or a service business running a vehicle fleet all feel this the same month prices move.

The second is capital expenditure: vehicles, machinery, facility upgrades, and energy-intensive equipment. This exposure moves more slowly, but it changes the economics of decisions you're making right now. A truck, a piece of production equipment, or a facility retrofit priced and financed this year carries assumptions about energy and material costs that may already be out of date by the time it's paid off.

A buyer evaluating your business will ask about both, not just the one that's easier to see on a monthly statement.

You don't have to run trucks yourself to feel this. Most freight contracts use a fuel surcharge formula tied directly to the national diesel price, so a swing of even $0.15 to $0.30 a gallon flows straight into what you pay for shipping, whether you notice the mechanism or not. If your business pays for freight at all, that surcharge is your energy exposure showing up under someone else's line item.

Here's the reframe most owners miss. A buyer isn't underwriting your trailing 12 months. They're underwriting a forecast, and a forecast built on a cost structure that just proved it can move 50% in a matter of weeks is a forecast they'll discount unless you can show them otherwise.

This isn't theoretical. The Federal Reserve's July 2026 Beige Book, which collects real commentary from businesses across the country, describes exactly this behavior happening now. Multiple districts reported energy costs tied directly to the conflict weighing on business sentiment. Companies are responding with selective price increases, protecting margin where they can rather than raising prices across the board, and some are redirecting capital spending toward cost saving equipment and facility upgrades specifically to manage the exposure (Federal Reserve Beige Book, July 2026). One agribusiness contact in the report expects related input cost pressure to persist through 2027, not to resolve by year end.

That's the diligence question in plain terms. Can you protect your margin, can you pass costs through without losing volume, and can you forecast your capital needs with any confidence. Small business owners are already telling the Federal Reserve their inflation concern is at its highest level in over a year and a half (NFIB, June 2026). A buyer reads that same signal and asks it directly: what's your answer.

None of this means every deal in an energy sensitive industry is about to get repriced. Deal activity through the first quarter of 2026 was still described as resilient, with strong buyer competition on larger transactions (IBBA Market Pulse, Q1 2026). But that data predates the current re-escalation, and it says nothing about how any specific buyer will treat your specific cost exposure. It's a market backdrop, not a guarantee about your deal.

What energy cost volatility can move, when a buyer takes it seriously, is more specific than a single valuation number. It can affect how much they trust your trailing EBITDA as a predictor of future earnings. It can shift the deal structure toward an earnout, a seller note, or a working capital adjustment instead of a clean multiple on trailing numbers, because the buyer wants to share the risk rather than price it all in up front. It can change how a lender underwrites the deal's financing, particularly if your near term capital plans assume costs that have since moved. And it can affect timing, since a buyer facing a live, unresolved risk factor may simply want more time in diligence before committing.

You don't need to predict where oil prices or this conflict go next, and you shouldn't try. Predicting geopolitics isn't the skill that protects your value. What protects it is being able to show a buyer, with evidence, that you already understand your exposure and have a plan for it.

Start by mapping your exposure honestly. List the direct costs (fuel, utilities, freight, key energy-linked raw materials) and the indirect ones (suppliers or customers who are themselves exposed and might pass their own cost pressure on to you). Then model two or three realistic cost scenarios using ranges from current sources like the EIA rather than a personal prediction, and look at what each does to margin and cash flow.

Document your pricing response, not just your intention. If you've raised prices, adjusted contract terms, or added a fuel surcharge clause, keep the record. A pattern of successful pass through is worth far more to a buyer than a verbal assurance that you could do it if you needed to. Revisit any near term capital plans for vehicles, equipment, or facilities with updated cost and financing assumptions before you're asked to defend them in diligence.

None of this requires a formal process to start. It requires treating your energy exposure as a documented, modeled part of your business plan rather than a line item you'll explain if someone asks.

If energy costs remain elevated, or rise again, can you clearly show a buyer how your company will protect its earnings and value?