JKM LNG: The Asian Spot Gas Benchmark

Key Takeaways

• The JKM LNG Asia benchmark prices spot LNG cargoes delivered to Northeast Asia.
• It is assessed daily by Platts in US dollars per MMBtu, ex-ship into the region.
• JKM, TTF, and Henry Hub together set the three-way global gas price competition.
• Asian LNG demand swings can pull cargoes away from Europe and tighten that market.

What the JKM LNG Asia Benchmark Is

JKM stands for Japan Korea Marker, the LNG price assessment published by S&P Global Commodity Insights (Platts). It reflects the spot value of LNG cargoes delivered ex-ship (DES) into Japan, South Korea, China, and Taiwan, which together account for the bulk of global LNG demand.

LNG is natural gas cooled to a liquid so it can be shipped by tanker across oceans. Because Asia imports most of its gas this way rather than by pipeline, it needs a benchmark for waterborne cargoes. JKM fills that role, much as Brent does for waterborne crude. It is quoted in US dollars per MMBtu.

The Intuition

A pipeline benchmark like Henry Hub cannot price gas that arrives by ship from another continent. LNG cargoes are flexible: a single shipment can sail to Europe or Asia depending on which market pays more. That flexibility requires a price signal for each destination.

JKM is that signal for Asia. When JKM rises above the European TTF price by more than the cost of shipping, cargoes that might have gone to Europe head to Asia instead. The relationship between JKM and TTF effectively allocates the world's flexible LNG between the two regions.

How It Works

Platts assesses JKM each day through a Market on Close (MOC) process. Bids, offers, trades, and indications of tradable value reported during the day are used to derive a price that reflects a repeatable spot cargo value. The assessment timestamp is 16:30 Singapore time, capturing the Asian trading day.

JKM = Platts MOC assessment, 16:30 Singapore time
basis = DES (delivered ex-ship) into Japan, Korea, China, Taiwan
units = US dollars per MMBtu

Because JKM prices cargoes delivered into Asia, it includes the cost of shipping LNG there, unlike Henry Hub, which prices gas at a US pipeline hub before liquefaction and transport. Traders can take positions through JKM-linked swap futures listed on exchanges such as ICE and CME, settling against the Platts assessment.

The three benchmarks form a chain. US gas bought at Henry Hub is liquefied, shipped, and sold at JKM or TTF. The difference between JKM and Henry Hub, minus liquefaction and shipping costs, determines whether US LNG exports are profitable.

Worked Example

Suppose Henry Hub trades at 3.50 dollars per MMBtu, while JKM is assessed at 12.00 dollars per MMBtu. The raw spread is 8.50 dollars.

Exporting US gas to Asia costs money: roughly a liquefaction fee plus shipping, which together might run several dollars per MMBtu. If those costs total 6.00 dollars, the netback is 12.00 minus 3.50 minus 6.00, or 2.50 dollars per MMBtu of margin. A positive netback keeps US LNG flowing to Asia.

Now suppose a cold Asian winter pushes JKM to 18.00 while TTF in Europe sits at 13.00 dollars per MMBtu equivalent. The Asia premium over Europe widens, and flexible cargoes divert from Europe to Asia. That diversion can tighten Europe's supply and lift TTF in turn, showing how the three regional benchmarks pull on each other.

Common Mistakes

1. Treating JKM like a pipeline price. JKM prices delivered LNG cargoes, including shipping, not gas at a wellhead or hub. Comparing it directly to Henry Hub without adding transport costs is misleading.

2. Ignoring the JKM-TTF arbitrage. Flexible LNG flows to whichever region pays more. Watching only one benchmark misses the cargo diversions that move both.

3. Overlooking liquefaction and shipping costs. The headline JKM minus Henry Hub spread looks huge, but most of it covers the real cost of liquefying and shipping the gas. Netback is what matters for export economics.

4. Assuming deep, oil-like liquidity. The spot LNG market is younger and thinner than crude. JKM liquidity has grown but can be patchy, so large hedges may face wider spreads.

5. Forgetting the Asian timestamp. JKM is assessed at 16:30 Singapore time. Comparing it to a US or European settlement struck at a different time of day can give a distorted spread.

Frequently Asked Questions

What is the JKM LNG Asia benchmark in simple terms? The JKM LNG Asia benchmark is the spot price for liquefied natural gas shipped to Northeast Asia, assessed daily in US dollars per MMBtu. It is the reference Asian buyers use for cargoes that arrive by tanker.

How does the JKM LNG Asia benchmark affect investment decisions? JKM drives the economics of LNG exporters, since their margin depends on the spread between JKM and the gas they buy at home. Investors watch the JKM-TTF gap to see where flexible cargoes will flow.

What is a real-world example of JKM pricing? If JKM is 12 dollars per MMBtu and Henry Hub is 3.50, a US exporter's netback after roughly 6 dollars of liquefaction and shipping is about 2.50 dollars per MMBtu, the margin on selling to Asia.

How can investors use the JKM-TTF spread effectively? Track the spread to anticipate cargo diversions: when JKM rises well above TTF plus shipping, LNG heads to Asia and can tighten Europe. The spread is a real-time map of global gas competition.

How is the JKM LNG Asia benchmark different from Henry Hub? JKM prices LNG delivered by ship into Asia, including transport, in dollars per MMBtu, while Henry Hub prices US pipeline gas before liquefaction. The gap between them, less shipping costs, sets export economics.

Sources

1. S&P Global. "Platts JKM (Japan Korea Marker) Gas Price Explained." https://www.spglobal.com/energy/en/pricing-benchmarks/assessments/lng/jkm-japan-korea-marker-gas-price-explained
2. S&P Global. "Specifications Guide Global LNG." https://www.spglobal.com/content/dam/spglobal/ci/en/documents/platts/en/our-methodology/methodology-specifications/lng/lng-specifications.pdf
3. Intercontinental Exchange. "Dutch TTF Natural Gas Futures." https://www.ice.com/products/27996665/Dutch-TTF-Natural-Gas-Futures
4. U.S. Energy Information Administration. "Natural Gas Weekly Update." https://www.eia.gov/naturalgas/weekly/

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.