LNG Markets: JKM, TTF and Cargo Arbitrage
Liquefied natural gas can be shipped anywhere a tanker can reach, so a single cargo can be steered toward whichever regional benchmark — Asia's JKM or Europe's TTF — pays more once shipping cost and time are accounted for.
Prerequisites: Natural Gas Markets and Seasonality, Transport Costs and Pipeline Tariffs
Pipeline gas is stuck: it goes wherever the pipe points. Liquefied natural gas (LNG) is not — chill the gas to a liquid, load it on a tanker, and it can be sold anywhere a port and a regasification terminal exist. That mobility is what makes LNG the one part of the gas market that's genuinely global, and it's why traders constantly compare regional gas prices against each other, because a cargo loaded for one market can, mid-voyage, be diverted to whichever one now pays more.
LNG connects otherwise separate regional gas markets. The two biggest reference prices — JKM (Japan-Korea Marker, the Asian benchmark) and TTF (Title Transfer Facility, the European benchmark) — should differ by no more than the cost and time of shipping a cargo between the two regions, or cargoes will simply reroute toward the higher price until that gap closes.
Why cargoes chase the spread
A cargo of LNG is committed to a buyer only once it's sold — many are sold "destination flexible," meaning the shipper can legally redirect it to a different buyer and market while still at sea (most spot cargoes allow this). A desk holding such a cargo compares two netbacks: sell into Asia at the JKM-linked price minus shipping cost to an Asian terminal, versus sell into Europe at the TTF-linked price minus the usually shorter shipping cost.
Because this comparison happens constantly across the tradeable LNG fleet, the JKM-TTF spread rarely strays far from the cost of the marginal voyage: if JKM trades well above TTF plus shipping and time cost, cargoes get pulled toward Asia, tightening Asian supply and loosening European supply, until the spread narrows back toward that boundary.
Worked example
TTF is priced at $11.00/MMBtu delivered in Europe. JKM is priced at $12.20/MMBtu delivered in Asia. Shipping a cargo the extra distance from a flexible loading point to an Asian terminal instead of a European one costs roughly $0.80/MMBtu more in freight and adds about two weeks of voyage time.
Netback to Europe: $11.00 (destination price, ignoring the shorter voyage cost as a baseline). Netback to Asia: $12.20 − $0.80 (extra freight) = $11.40.
Asia nets $0.40/MMBtu more even after the extra shipping cost, so a trader holding an uncommitted cargo routes it toward Asia. If enough cargoes make the same calculation, Asian supply rises and European supply tightens, pushing JKM down and TTF up until the $0.40 edge disappears.
What this means in practice
The JKM-TTF spread is watched as a real-time gauge of where marginal LNG supply is flowing, and it moves sharply around seasonal demand — Asian winter heating and summer cooling peaks, or a supply shock like the curtailment of Russian pipeline gas — because both regions bid for the same global pool of flexible cargoes.
Not all LNG supply is flexible — many long-term contracts are destination-fixed, and even flexible cargoes take weeks to redirect, so the JKM-TTF spread does not close instantly the way a screen-traded financial arbitrage would. Genuine, immediately actionable arbitrage capacity is a fraction of total global LNG trade.
Further reading
- IEA, 'Global Gas Security Review', LNG chapters