Iran War and Gas Prices: A Playbook for Traders

Eight months into the Iran war, the conflict is no longer a headline risk for European energy markets. It is the market. Dutch TTF gas has climbed to around €88/MWh, its highest level since December 2022, while Brent crude has returned to roughly $110 a barrel after renewed reports of attacks on shipping in the Strait of Hormuz. For CIOs, traders and risk managers, the challenge is not simply higher prices. It is a market whose drivers, correlations and risks have changed shape. This guide explains what is moving gas prices, what to watch, how to plan for the months ahead and what each role can do now.

Where the market stands

European gas has posted three consecutive weekly gains, with benchmark TTF futures touching their highest levels in almost four years. Market data compiled by Trading Economics shows Middle Eastern LNG supplies running around 80% below year-earlier levels, while Europe enters winter with storage well below normal. Last week, reports that Iran had attacked two vessels in the Strait of Hormuz pushed TTF above €86/MWh, and early this week front-month contracts traded just below €88/MWh.

Diplomacy continues, including talks involving the United States, Iran and Oman over arrangements for shipping through the strait, but none has yet restored normal LNG flows. The European Commission and member states maintain that EU gas supply remains stable. Ratings agency Fitch has raised its TTF price assumptions for this year and next, citing the disruption to LNG flows through Hormuz.

How the war transmits into gas prices

Understanding the mechanics matters, because each channel creates a different kind of risk on your book.

1. A fifth of global LNG supply, trapped

Before the conflict, around 20% of global LNG supply passed through the Strait of Hormuz, most of it from Qatar. With much of that volume unable to move, the global market lost a large, flexible source of supply almost overnight.

2. Europe and Asia competing for the same cargoes

Asian buyers who relied on Qatari LNG now compete with Europe for Atlantic Basin cargoes from the United States and elsewhere. European hub prices must stay high enough to attract cargoes away from Asia, which sets a structurally higher floor for TTF and NBP.

3. A curve that discourages storage

Near-term gas has traded at a premium to later months. In a backwardated curve, buying gas today to sell in winter loses money, so the usual economic incentive to fill storage weakens. That is a key reason European storage is at historically low levels heading into winter.

4. Freight, insurance and routing costs

Record tanker freight rates, war-risk insurance premiums and longer routes add cost to every delivered cargo, and these costs can move independently of the commodity price itself.

5. Spillover into power and oil-linked contracts

Where gas sets the marginal electricity price, gas tightness feeds directly into power prices and spark spreads. Oil-indexed gas contracts add a second channel, as Brent’s rise feeds through with a lag.

What to watch: the indicators that matter

Storage trajectory: fill levels against the five-year range, and withdrawal rates once heating demand starts.
LNG arrivals into Europe: weekly import volumes and the share diverted to Asia.
Asia–Europe price spread: how much premium Asian buyers are paying to pull cargoes away from Europe.
Curve shape: the summer–winter spread and the degree of backwardation along the TTF curve.
Weather and wind: cold, still spells increase gas burn for both heating and power generation.
Hormuz shipping data: credible evidence of LNG carriers transiting, not just diplomatic statements.
Policy signals: demand-reduction measures, storage rules, price interventions and the EU ban on Russian LNG from January 2027.

Three scenarios to plan for

No one can predict the path of the conflict, but planning around a small set of coherent scenarios is far more useful than a single forecast. We suggest three.

Scenario A: a negotiated reopening

A durable agreement restores LNG transits. Prices fall sharply, but not instantly: shipping schedules, insurance and Qatari output take time to normalise, and the storage deficit still has to be refilled. Risks here include being over-hedged at high prices, rapid curve flattening and mark-to-market swings on long positions.

Scenario B: a prolonged standoff

The current situation persists through winter. Prices stay elevated and volatile, with periodic spikes on shipping incidents. Liquidity, margin and counterparty credit become the dominant risks, and storage and flexibility gain value.

Scenario C: escalation plus a cold winter

Further attacks or escalation coincide with a cold, low-wind period. Prices could spike well above current levels, demand-reduction measures become likely and power prices follow gas. This is the scenario that tests liquidity buffers, limits and operational resilience.

The practical value lies in running all three consistently across gas, power and oil-linked exposures, and in agreeing in advance what actions each scenario would trigger.

What each role can do now

For traders

Separate outright price views from spread and curve-shape views, and size each deliberately.
Value optionality properly: storage, swing contracts and flexible supply are worth more in volatile, backwardated markets.
Pre-agree responses to scenario triggers, such as a confirmed reopening or a major shipping incident, rather than reacting in the moment.
Watch basis and location spreads, which can move sharply as LNG routing changes.

For risk managers

Treat historical VaR with caution. Regime changes make past correlations and volatilities unreliable, so supplement VaR with forward-looking scenarios.
Run liquidity and margin stress tests, including exchange and bilateral collateral under stressed prices and volatility.
Add reverse stress testing: what combination of events would breach your limits or exhaust liquidity?
Monitor counterparty concentration and credit quality as stress spreads through the market.
Review model risk for forward curves, especially illiquid winter tenors where fundamental assumptions drive valuations.

For CIOs

Make sure positions and risk are available intraday from a single, trusted system of record, not reconstructed in spreadsheets.
Give risk teams a scenario engine that runs against the live book, with geopolitical attributes such as route, origin and contract clauses captured as data.
Automate market data, curves and forecast feeds, so scenarios refresh in hours rather than days.
Harden integrations between trading, risk and treasury, so margin and liquidity forecasts use the same data as the trading desk.
Use AI where it is safe and valuable, such as monitoring shipping and news events, summarising force majeure notices and answering exposure questions, with clear governance and human approval for decisions.

Common pitfalls to avoid

Anchoring on one forecast: a single price view hides the range of outcomes that actually drive risk.
Inconsistent scenarios: gas, power and oil assumptions that do not hang together produce misleading results.
Ignoring liquidity: in past crises, margin calls caused more distress than paper losses.
Spreadsheet scenarios: stress tests run on stale snapshots of the book miss the exposure that matters today.

How Orivyn can help

Orivyn is an independent consultancy that works at the intersection of trading systems and market modelling. Our gas price forecasting and market modelling and power price forecasting teams build consistent, explainable scenarios like the ones above. Our ETRM and CTRM consultants help you run those scenarios against the live book, capture geopolitical risk dimensions and connect trading, risk and treasury data. Because we do not sell software, our advice is shaped only by what works for your business. If an independent view would help, book a 30-minute review with a senior consultant.

For more context, read our earlier analysis of Europe’s winter gas crunch and our guide to adapting trading and risk systems for geopolitical risk.

Frequently asked questions

Why does a war in the Middle East push up European gas prices?

Before the conflict, around a fifth of global LNG supply passed through the Strait of Hormuz, mainly from Qatar. With that supply largely trapped, Europe and Asia compete harder for the remaining cargoes, which lifts prices at European hubs such as TTF and NBP.

Why is European gas storage so hard to refill this year?

Prices for near-term delivery have traded above later months, a curve shape known as backwardation. That makes buying gas now to store for winter uneconomic, so storage operators and traders have had less incentive to inject.

What indicators should energy traders watch?

Storage trajectory against prior years, LNG arrivals into Europe, the spread between Asian and European LNG prices, the shape of the TTF forward curve, weather forecasts and wind output, and credible signals on shipping through Hormuz.

How should risk managers adapt VaR and stress tests during the crisis?

Historical VaR can understate risk when markets shift regime, so it should be complemented with forward-looking geopolitical scenarios, liquidity and margin stress tests, and reverse stress tests that identify which combination of events would breach limits.

What should CIOs prioritise right now?

Reliable intraday position and risk data, a scenario engine that runs against the live book, automated market and forecast data feeds, resilient integrations between trading, risk and treasury, and clear governance for any AI tools used on the desk.

Sources

Market figures are as reported by the sources above at the time of writing and will change; they are provided for context, not as investment advice.

The Iran War and Europe’s Gas Prices: A Practical Playbook for CIOs, Traders and Risk Managers