Brent is not the average cost of producing a barrel of oil. It is the price required to keep the final barrel in the market or drive the final buyer out of it. LNG, coal, power, carbon. Same story.
Markets do not clear at the average. They clear at the margin.
That’s where prices are set. That’s where forecasts fail. And that’s where money is made and lost.
That is the premise of Marginal Barrel.
A remarkable amount of energy analysis still treats averages as if they matter more than marginal decisions. Average breakevens. Average supply costs. Average demand growth. Useful for presentations, perhaps. Less useful for understanding why prices moved yesterday or where they’re headed next.
The cost of getting this wrong has risen dramatically.
The Margin Has Moved
For much of the last century, finding the marginal barrel was relatively easy.
The marginal supplier sat in the Gulf. The marginal buyer sat somewhere in the OECD. Supply was concentrated. Demand was predictable. Price formation was opaque but not particularly complicated.
That world is gone.
Today’s marginal supply increasingly comes from project developers, private capital and globally traded molecules. A liquefaction train on the US Gulf Coast. A shale producer in the Permian. A floating production vessel offshore Guyana.
And the marginal buyer no longer sits in Frankfurt or Chicago.
It sits in Guangdong. Karachi. Jakarta.
The decision that sets the global gas price may be made by a Chinese industrial consumer declining a spot cargo, a Pakistani utility switching fuels, or an Indonesian power company delaying purchases for another month. These are not side stories. They are the market.
Understanding energy today means understanding who can walk away from the next cargo and at what price.
What Most Commentary Gets Wrong
Three habits dominate modern energy analysis.
First, the obsession with averages.
No barrel is sold at an average price. No cargo clears because an average breakeven says it should. Averages are accounting tools. Markets are marginal systems.
Second, the confusion of cost curves with supply curves.
A cost curve describes what existing production costs. A supply curve describes what it takes to bring the next unit to market. Those are different questions. One requires arithmetic. The other requires capital, permits, infrastructure, shipping and counterparties.
The distance between the two is where most forecasts die.
Third, forecasts without mechanisms.
A price target is not an argument.
A forecast that cannot identify the buyer or seller setting the market is simply a number with excessive confidence attached to it. We’d rather be explicit about the mechanism and wrong about the outcome than the reverse. At least then the mistake is useful.
What We Do
Marginal Barrel starts with a simple question:
Who sets the price?
Every week we take a market problem and push it until we find the answer.
Who is the marginal LNG supplier to Northeast Asia next winter?
What return does a liquefaction project actually need to reach FID?
At what price does Southeast Asia switch from gas back to coal?
What is a producing gas field worth when the assumptions underpinning its contract no longer exist?
The methods are not glamorous. Bottom-up cost curves. Netback analysis. Contract economics. Project models. They are simply the tools that work.
Every piece contains original analysis. Every piece contains a chart. Most contain at least one number you won’t find elsewhere.
Where there is a model behind the work, subscribers get the model.
A Rule We Intend To Keep
Every analysis ends with the same section:
What would change our mind?
Most market commentary treats uncertainty as a weakness. We regard it as a discipline.
If we cannot explain what evidence would invalidate our thesis, then we do not yet have a thesis. We have a preference.
How It Works
A long-form piece every Tuesday morning, Singapore time.
A shorter chart-led note every Friday on whatever moved the market that week.
Free posts remain free. A paid tier will follow once there is enough research and modelling behind the publication to justify it. Subscribers will receive the full analysis, downloadable models and reader-driven research.
Who Writes This
Marginal Barrel is written pseudonymously by a practitioner with two decades across wide spectrum of energy industry.
The anonymity is deliberate.
Energy analysis has too much credentialism and too little accountability. We’d rather be judged on forecasts than biographies, on arithmetic than branding.
The trade-off is obvious. Readers receive no résumé, no conference headshots and no carefully curated list of employers.
Only the work.
That seems fair.
Nothing published here is investment advice. We hold no positions in the markets we write about and will disclose it if that changes.
The marginal barrel sets the price.
Our job is to find it.
What would change our mind? If average costs consistently explain energy prices better than marginal behaviour, then this publication has no reason to exist. We do not expect that outcome. But if the evidence points there, we’ll be the first to say so.
https://substack.com/@livanneah/note/p-222304856?r=64jnhj&utm_source=notes-share-action&utm_medium=web