JKM holds near $21 as Japanese power curves soften and supply pressure builds
Asian LNG spot stays elevated but easing Japanese forward prices and a uniformly bearish supply consensus point to downside risk.
The Japan-Korea Marker sat at $21.21/MMBtu on August 16, markets closed and unchanged for the weekend. That puts it roughly 24% above the $17.10/MMBtu reading from May 19, 2026, a climb that reflects summer heat and tighter Asian balances. JKM anchors the reference price for 70% of global LNG trade, which is why the summer rally has rippled through Asian power markets.4,5[LIVE PRICES]
But Japanese power forward curves have begun to soften. Tullett Prebon data from the July 30 curve showed Tokyo August baseload easing to ¥24.05/kWh from ¥24.50 on July 24, with Kansai slipping to ¥20.85 from ¥21.20 and Chubu to ¥23.00 from ¥23.45. Peak-load contracts held firmer, suggesting the demand impulse has plateaued at the baseload level even as extreme heat keeps peak pricing supported.7
The preceding week had told a sharply different story. Tullett Prebon curves from July 23 put Tokyo August baseload at ¥24.65/kWh, up 8.1% from ¥22.80/kWh on July 17. Kansai rose 13.6% to ¥21.30 from ¥18.75 over the same stretch, and Chubu climbed 9% to ¥23.55 from ¥21.60, as increased cooling demand and fuel-risk concerns lifted near-term pricing.6
Japanese utilities are among the most price-sensitive spot LNG buyers in Asia. Softer forward power prices generally reduce their urgency in cargo procurement, which feeds into JKM spot. METI data released on June 14 showed Japan's LNG inventories for power generation at 2.30 million tonnes as of June 11, down 0.08 million tonnes week-on-week but 0.16 million tonnes above the same point the previous year — a stock cushion that limits how aggressively utilities need to cover.1
The supply-side consensus is uniformly negative. ChAI's forecast model finds $0.99/MMBtu of upward pressure from technical factors, specifically traders' positions and price signals, while supply data, especially inventories, points in the opposite direction. Drawn from 22 signals, the consensus carries a bearish weight of 1.504 with zero bullish weight.3[CONSENSUS VIEW]
European storage adds context to the Pacific supply balance. AGSI+ data showed EU underground gas storage at 73.7% full as of June 16, up from 71.5% a week earlier, and later readings put the rate at 82.7% on November 7, 2025, down 12.5% from a year earlier and 9.2% below the five-year average. At that fill level, European buyers' appetite for competing aggressively on spot Pacific cargoes remains limited, historically freeing Atlantic supply for Asia as winter procurement pressure eases.1,2
U.S. gas adds further supply pressure. EIA data showed U.S. working gas inventories at 3,915 Bcf as of October 31, 2025, up 33 Bcf on the week and 4.3% above the five-year average. The NYMEX Henry Hub front-month was at $2.75/MMBtu in the last traded session, and the EIA projects the 2026 Henry Hub average at $3.80/MMBtu, down 13% from the previous month's forecast.2,3[LIVE PRICES]
Low U.S. gas prices shape the Atlantic LNG arbitrage. When ICE Endex TTF front-month holds well above Henry Hub, U.S. cargoes favour the European route over Asia, tightening the pool of spot supply available to Pacific buyers. TTF closed at €61.38/MWh on August 15 (2026-08-15). [LIVE PRICES]
Recent spot history is a reminder of how quickly that calculation can reverse. The JKM jumped from the mid-USD 9s to the mid-USD 13s in a single week during mid-June after extended maintenance at Norway's Nyhamna gas processing plant triggered supply concerns. Disruptions can override bearish fundamentals in days.1
The next concrete signals come from weekly inventory data. METI's next LNG release will show whether Japanese utilities are rebuilding stocks ahead of autumn, and AGSI+ data will reveal whether European storage gains continue above seasonal norms. A sustained build in either region confirms the bearish consensus; a draw or another unplanned supply outage would test how much the summer rally has left to run.1,2