Commonwealth LNG Books Out at 8.5 mtpa, Adding to the US Supply Wave Bearing Down on JKM

Commonwealth LNG Books Out at 8.5 mtpa, Adding to the US Supply Wave Bearing Down on JKM A fully subscribed US export project points to more North American LNG from 2026, even as the spot marker holds near multi-year highs on positioning rather than scarcity. Commonwealth LNG's proposed Cameron Parish project in Louisiana is now fully subscribed, after Mercuria amended its 20-year sale and purchase agreement to take an additional 0.5 mtpa, lifting its commitment to 1.5 mtpa, lngpriceindex.com reported on 2026-05-19.⁵ The book now sits at the project's full 8.5 mtpa nameplate.⁵ That matters because the next increment of supply is closer to sanction than to speculation. With the offtake closed, focus shifts to a final investment decision that would add another non-Hormuz US Gulf export source into the 93 to 150 mtpa North American supply wave expected from the second half of 2026 onward.⁵ For a spot buyer, the question is whether current tightness survives that build-out.⁵ The benchmark itself is going nowhere. The Japan Korea Marker for spot LNG stood at $17.10/MMBtu on 2026-05-19, unchanged on the day, with sentiment reading neutral after a long run higher, EnergyRiskIQ data showed.^6,5 What is holding it up looks more like positioning than fundamentals. ChAI's forecast flagged upward pressure on the marker from technical data, with a $0.99/MMBtu impact attributed largely to traders' positions and price signals, while inventory data pulled the other way.⁴ Inventories describe a comfortable market. A 28 June METI release put Japan's LNG stocks for power generation at 2.23 million tonnes as of 25 June, down 0.14 million tonnes on the week but up 0.09 million tonnes from a year earlier.² That is not the profile of a market short of cargoes.² History shows how violently this benchmark can move. Asian spot LNG surged to $56.326/MMBtu on Wednesday (2026-05-13), the highest since Platts launched the marker in 2009, after a European gas crisis pulled cargoes west, S&P Global Platts data showed.³ The November contract jumped $16.655/MMBtu in a single session that day.³ That spike originated in European demand transmitted through the Atlantic basin, not an Asian supply shortfall.³ The lesson for a JKM holder is that the benchmark's worst tail risk often starts an ocean away.³ The longer-run call leans the other way. Fitch Solutions expected Asian LNG to stay under pressure as a supply glut loomed, while noting that severe disruptions had supported stronger performance in earlier quarters.¹ The cheaper-feedstock case reinforces it. The EIA projects the Henry Hub spot price will average around $3.80/MMBtu in 2026, a 13% cut from the prior month's forecast.⁴ Lower US gas costs widen the Atlantic LNG arbitrage and make sanctioning capacity like Commonwealth easier, which is how a soft US gas price eventually presses on the marker through fresh cargoes.^4,5 For now the consensus is one-sided. The packet's signal read showed JKM spot weighted entirely to the downside across 47 signals, with no bullish counterweight.^4,1 That is a crowded position, and crowded positions are where a European cold snap or a single delayed cargo do the most damage.⁴ Two things to watch into the back half of the year. The first is Commonwealth's final investment decision, the trigger that turns a closed book into committed capacity.⁵ The second is whether Japan's weekly power-sector inventories hold through injection season, because a comfortable buyer in Tokyo is much of what keeps the 2026-05-19 assessment from looking rich.²