wunder beta🗺️ The Geography of Energy: Where Power Comes From
Understand the world map of oil, gas, coal, and the renewables replacing them. You'll learn why energy deposits sit where they do, how pipelines, tankers, and grids move power across borders, and how
What you’ll learn
- The Map Was Drawn Before There Were PeopleSee the world energy map as a map of ancient burial environments rather than of politics.Fossil fuels are captured sunlight that decomposers never returned to the atmosphere, so deposits exist only where burial outran decay in low-oxygen settings. Oil and gas came from plankton in stagnant marine basins; coal came from waterlogged tropical swamps, especially in the Carboniferous. Plate tectonics then moved the evidence, so Britain's coal formed near the equator.
- Source, Reservoir, TrapExplain why source rock is common but oil fields are rare, using the petroleum system.Oil is buoyant and migrates upward, so its default fate is to seep away at the surface; a field requires source rock cooked in the right temperature window, a porous reservoir, and a trap with an impermeable seal — with the trap in place before the oil arrives. The Persian Gulf assembled all of these at unusual scale, including salt that made both seals and domes. 'Proved reserves' measure what is recoverable at current prices and technology, not what is present.
- The Cost of Moving a JouleAdopt transport cost per joule as the question that predicts a fuel's market shape and politics.Energy sits where geology put it and people live elsewhere; everything else is the bill for that gap. Transport cost is set by energy density and handling requirements, and it determines whether buyers and sellers are interchangeable. Cheap-to-move oil gets one global market; expensive-to-move gas gets regional markets and long marriages.
- Oil: The One Global PriceExplain oil's single global price, why energy independence does not insulate it, and why routes matter more than wells.Oil is fungible and cheap to ship, so it trades as one commodity against benchmarks such as Brent and WTI, and there is no national oil price. Its vulnerability is therefore its sea routes, above all the Strait of Hormuz. The 2026 closure drove Brent from about $61 to $118 and back below $70 after the strait reopened in June — a route problem, not a resource problem.
- Gas: Three Markets, One MoleculeExplain why natural gas has regional rather than global markets, and read the 2026 benchmark divergence as proof.Methane carries roughly a thousandth of a liquid's energy per unit volume, so it moves only by pipeline or by chilling to about −162 °C as LNG. Pipelines are cheap but marry one seller to one buyer; LNG costs far more per joule and buys the option to sell elsewhere. After the 2026 Hormuz closure, EIA reported TTF up 35% and JKM up 51% while Henry Hub fell 9% — one event, three markets, two directions.
- Coal: The Fuel That Stays HomeExplain why coal stays close to home and therefore generates domestic rather than international politics.Coal's low value per tonne means freight rivals the cargo over distance, so most coal is burned near where it is mined, often at a power station beside the mine. The coal that travels internationally is disproportionately high-value metallurgical coal, and exporters are countries with coal near a port. Coal was nonetheless the innovation that first made energy a cargo rather than a property of a place.
- Electricity: The Map With No WarehouseUnderstand the grid as a geographical object whose defining constraint is that electricity cannot be stored.Electricity must be consumed at the instant it is generated, so the grid has no warehouse and supply must match demand second by second. Its reach is the reach of its wires, which makes interconnection a foreign policy decision built in steel. Congestion means one country can have several simultaneous prices — the same transport constraint as Hormuz, with the wire as the strait.
- The Renewable Resource Is Geography TooSee renewable resources as geographic, and understand why they cannot be exported as a commodity.Solar and wind resources are widely but not evenly distributed, and capacity factor is a property of a place rather than of a machine. Because the resource is a flux and not a substance, it cannot be shipped — so a sunny country gets cheap domestic power that attracts industry rather than a commodity to export. The cost moves from fuel to capital and to transmission, and the world's primary energy remains overwhelmingly fossil despite very fast renewable growth.
- The New Chokepoints Are FactoriesLocate the energy transition's real bottleneck in processing and manufacturing rather than in geology.Critical mineral reserves are comparatively widespread; the concentration sits downstream in refining and component manufacture, which is an industrial and policy outcome rather than a geological one. Minerals are also a stock rather than a flow — installed rather than burnt, and largely recyclable — so an interruption bites over years rather than days. 'The new oil' therefore gets the timescale badly wrong.
- Reading the Map YourselfApply the transport-cost rule independently, and see what the map can and cannot settle.One question — what does it cost to move this joule, and what does that do to who needs whom — accounts for oil's single price, gas's three markets, coal's domestic politics, electricity's instantaneity, and renewables' pull on industry. The rule makes testable predictions about benchmark spreads, transmission fights, and the domestication of energy politics. It explains what is possible and what it costs; it does not decide what anyone should want.
Questions this course answers
Why is 'where did dead life get buried before it rotted?' a better question for locating fossil fuels than 'where was there abundant life?'
A fossil fuel is captured sunlight that was never given back. Normally decomposers respire dead organic matter's carbon straight back to the atmosphere and nothing is stored. Deposits exist only where burial outran decay — in anoxic settings. Since life itself was widespread, it is the burial condition, not the biology, that makes the map lumpy.
A company finds a thick, organic-rich source rock cooked in the right temperature window, sitting beneath a beautiful salt-sealed dome. Why might there still be no oil field?
A petroleum system needs source, reservoir, and trap-with-seal — plus timing. Oil is buoyant and migrates upward over geological time, and its default fate is to reach the surface and be lost. A trap only works if it already exists when the oil arrives. A dome that forms ten million years too late is a perfectly good dome full of water.
What does the course argue is the single question that best predicts a fuel's politics?
Transport cost per joule determines market shape, and market shape determines leverage. Cheap-to-move fuels (oil) make buyers and sellers interchangeable and produce one global price; expensive-to-move fuels (gas) chain a specific buyer to a specific seller. Reserves tell you where the stuff is; the transport bill tells you what happens next.
A country produces every barrel of oil it consumes. A war shuts in production on the far side of the world and the global price triples. What happens to the price at that country's pumps, and why?
Because oil is fungible and cheap to ship, there is a world price rather than national prices, set by the world's marginal barrel. Being a net exporter changes who receives the money — a real benefit — but does not insulate the price you pay. Only measures that break the market, such as export bans or price caps, change that, and they carry their own costs.
After the February 2026 Hormuz closure, EIA reported Europe's TTF up 35% and Asia's JKM up 51%, while the US Henry Hub benchmark fell 9%. What does the negative number demonstrate?
One event moved three benchmarks in two directions, which is impossible for a globally traded commodity. US gas can only reach Europe and Asia as LNG; with export opportunities limited, the gas stayed home and glutted its own market. The minus sign is a direct measurement of the fact that you cannot casually move gas.
Why do importers pay a large premium for LNG when a pipeline delivers the same molecule far more cheaply per joule?
A pipeline is a fixed steel object joining one seller to one buyer; it cannot be redirected, which makes both parties hostages and is why gas contracts historically ran for decades at pre-agreed prices. LNG costs much more per joule and buys optionality. That premium is not inefficiency — it is the price of not being married to your supplier.
Grounded in trusted sources
- US Energy Information Administration, Today in Energy, 'International LNG prices rise amid Strait of Hormuz closure' (28 April 2026) — https://www.eia.gov/todayinenergy/detail.php?id=67604
- US Energy Information Administration, Today in Energy, 'Crude oil and petroleum product prices increased sharply in the first quarter of 2026' (7 April 2026) — https://www.eia.gov/todayinenergy/detail.php?id=67424
- US Energy Information Administration, Short-Term Energy Outlook, July 2026 — https://www.eia.gov/outlooks/steo/report/global_oil.php
- US Energy Information Administration, press release, 'EIA expects a drop in global oil demand will limit price increases from Hormuz disruptions' (9 June 2026) — https://www.eia.gov/pressroom/releases/press589.php
- Our World in Data, 'Global Primary Energy' data (2024 values, accessed July 2026) — https://ourworldindata.org/grapher/global-primary-energy
- Energy Institute, Statistical Review of World Energy, 75th edition (2026)
- International Energy Agency, Gas Market Report Q1-2026, and Global Critical Minerals Outlook
- US Geological Survey — petroleum system concepts; Mineral Commodity Summaries
Every Wunder lesson is built from real, reputable sources — never invented.
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