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Oil, Gas & Energy — Seasonality, Routes and Risk

Energy is the one price that shows up inside every other price. This page sets out what oil, gas and electricity normally do through the calendar year, what genuinely pushes them up and down, which sea lanes and pipelines physically carry them, where the weak points are, which countries get hurt first, and what expensive energy does to an economy — the parts that bite within days, and the parts that take years.

What this page is for. It is written for advisory and preparation, not for prediction and not as a trade recommendation. Nobody gets a warning shot before a strait closes, a pipeline is cut or a reservoir runs dry. The point of knowing the seasonal pattern, the routes and the dependency map in advance is that you can act before it hits the fan, while options are still cheap and shelves are still full — instead of discovering the map for the first time in the middle of the crisis.

1 · The board, in USD

All prices on this page are quoted in US dollars, because that is the currency the world actually trades energy in. The board below is live from the same feed the Commodities Analysis page uses.

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Units matter more than they look. Crude is priced per barrel (159 litres). US natural gas is priced per MMBtu (roughly a million British thermal units); European gas is normally quoted per MWh, and 1 MMBtu is about 0.293 MWh — so a European price in EUR/MWh and a US price in USD/MMBtu are not remotely the same number even when the gas is identical. Petrol and heating oil trade per US gallon (3.785 litres). Comparing an American headline with a European one without converting both the unit and the currency is the single most common way people mis-read an energy story.

2 · What moves the price — systematically

Energy prices are not mysterious. They are the outcome of a small number of forces, and almost every headline you will ever read is one of them wearing a costume. Split them into four layers: demand, supply, plumbing (the physical middle of the chain) and the paper market.

The two columns. Anything that raises consumption or removes supply pushes the price up; anything that cuts consumption or adds supply pushes it down. The strength of each arrow depends on spare capacity — see below.

2.1  Demand — who is burning it

2.2  Supply — who is producing it

2.3  Plumbing — getting it from there to here

2.4  The paper market — and the shape of the curve

Far more barrels trade on paper than are ever delivered. That is not a scandal; it is how producers and airlines hedge. But it means positioning and financial flows can move the price for weeks without a single physical barrel changing hands.

The one piece of jargon worth learning is the shape of the futures curve, because it tells you what the physical market is actually short of:

Backwardation
Near-dated contracts cost more than later ones. The market is paying up for barrels now — a sign of physical tightness. Typically goes with falling inventories.
Contango
Later contracts cost more than near ones. Nobody is desperate for barrels today; it pays to store them. A sign of surplus — and in extreme cases, of storage filling up.
Practical use for a non-trader: the curve shape is a free read on whether a price spike is a genuine shortage or a fear premium. A spike with the curve flipping hard into backwardation is physical. A spike with the curve still in contango is mostly nerves — and nerves unwind faster than shortages.

3 · Seasonality — what to expect through the year

Energy is one of the few markets with a physical reason to be seasonal. People heat in winter and drive in summer, refineries shut for maintenance in the quiet months, storage is filled in one half of the year and emptied in the other. That leaves a footprint in the price history — a real one, but a weak one, easily buried by a war, a cartel decision or a recession.

The two charts below are computed live from the actual price history at load time, not typed in from a textbook. For each calendar month we take every month-on-month change in the record, average them, and chain the twelve averages into one typical year. The number of years behind each month is shown, because an average of four Januaries is not evidence.

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How to read the hit rate. The average tells you the size of the typical move; the hit rate tells you how often it actually went that way. A month with a +2% average and a 52% hit rate is one big year dragging the average — not a pattern. A month with a +1% average and a 70% hit rate is a pattern. Neither is a guarantee, and we do not draw a line at all when the evidence is too thin to be honest about.

3.1  The calendar, and the reason behind each month

January
Peak heating demand in the northern hemisphere. Gas and power are at their most weather-sensitive: a cold snap has nowhere to hide because storage is already being drawn down. Crude is quieter — the new year brings fresh hedging and fresh budgets.
February
Still heating season, and the month when a genuine cold event does the most damage (frozen wellheads cut supply and demand spikes at the same time). Chinese New Year briefly dents Asian industrial demand. US refinery maintenance turnarounds begin.
March
Heating demand fades, gas storage bottoms out and the injection season begins — the market flips from emptying tanks to filling them. Refiners start buying crude for the summer fuel season.
April
The classic build-up month for crude and petrol: refineries come back from maintenance, and the switch to the more expensive summer petrol blend works its way to the pump. Gas is in its low-demand shoulder.
May
Northern driving season starts in earnest at the end of the month. Alpine and Nordic hydro gets its snowmelt inflow, which softens power prices where hydro is big.
June
Driving demand at full strength; cooling demand starts lifting electricity and, in gas-fired grids, gas. The Atlantic hurricane season opens on 1 June and the risk premium for offshore production and Gulf-coast refining begins to be priced.
July
Peak cooling load in the northern hemisphere; grids run at their annual stress test. Rivers start running low in dry years, which matters for barge freight and for thermal-plant cooling.
August
Hurricane season peaks (August–September). Low water on inland waterways typically bites hardest now. European storage refill is in its final stretch before winter, so any LNG competition with Asia shows up in the price.
September
The turn. Driving season ends, the cheaper winter petrol blend returns, and the second refinery maintenance window opens. Storm risk is still live. Gas begins pricing the coming winter rather than the passing summer.
October
The quiet shoulder for oil demand and the last of the gas injection season. Heating demand has not started but the winter risk premium is now firmly in the gas curve.
November
The withdrawal season starts: gas storage begins to empty. Hurricane season closes on 30 November. Diesel and heating oil demand builds.
December
Full heating season. In the US Gulf, year-end inventory taxes encourage refiners to run crude stocks down, which can distort the weekly statistics. Thin holiday liquidity exaggerates whatever move does happen.
The honest limit of seasonality. In a calm year the calendar above is a decent guide. In a year with a war, a cartel shock, a pandemic or a deep recession, it is worth almost nothing — those forces are an order of magnitude larger than the seasonal tendency. Treat seasonality as a tilt in the odds, never as a forecast, and never as a reason to ignore what is actually happening on the map.

4 · The sea lanes — where it physically comes from

Roughly six out of every ten barrels of oil consumed in the world travel by ship, and essentially all liquefied natural gas does. Ships are cheap and flexible — until they have to pass through a gap a few kilometres wide that somebody can close. Every serious oil price shock of the last fifty years has been about one of the points on this map.

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Red numbers are chokepoints; amber lines are the main crude and product sea routes; the dashed amber line is the Cape of Good Hope detour that everything falls back on when the Red Sea route is unusable.

The structural lesson. A chokepoint does not have to be closed to cost money. It only has to become risky. Insurers reprice, owners refuse charters, voyages lengthen, and the delivered price rises while global production is completely unchanged. When you read that a strait is “still open”, check the war-risk premium and the number of transits, not the statement.

5 · The pipelines — where it comes from by land

Pipelines are cheaper than ships and far less flexible. A tanker can be redirected mid-voyage; a pipeline goes where it was built, through whichever countries it was built through, and if it stops there is no substitute on the other end. That inflexibility is exactly why pipelines are political.

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Blue = gas, amber = oil, dashed grey = built but idle, shut or destroyed. Routes are schematic: the corridor is right, the exact trench is not.

Ships versus pipes, in one line: pipelines are cheap, fixed and hostage to whoever they cross; ships are expensive, flexible and hostage to a handful of straits. A country that can only be supplied one way is exposed either way — the useful question is never “is our supply secure?” but “how many independent ways in do we have, and what is the cost of the second one?”

6 · Water, weather and heat — the risk nobody prices until it arrives

Straits and pipelines get the headlines. In practice, a surprising share of energy disruption over the last decade has been caused by something with no politics in it at all: not enough water, or water that is too warm. It hits three separate things at once — transport, cooling and generation — and it hits them in the same weeks, because the cause is the same.

6.1  Rivers as fuel corridors

6.2  Water as coolant and as fuel

6.3  The wind and sun version of the same problem

Wind and solar have a weather risk of their own, and it is correlated across a continent. A still, overcast, cold high-pressure system — the Germans call it a Dunkelflaute — can hold wind and solar output near zero across north-west Europe for several days in midwinter, when demand is at its annual peak. Solar output in high latitudes is at its yearly minimum in exactly the months heating demand is at its maximum. This is not an argument against either technology; it is an argument for being honest that a grid is only as strong as its worst simultaneous hour, not its annual average.

The point that generalises: energy risk is not only about hostile actors. Drought, heat and stillness are supply shocks too, they arrive with little warning, and they tend to hit transport, cooling and generation at the same time and in the same place. Any dependency map that only counts politics is missing half the picture.

7 · Electricity — every source has a transport loss and a supply risk

Electricity is not an energy source. It is an energy carrier — a way of moving energy from where it was released to where it is used. That distinction is the whole of this section, and it produces one rule with no exceptions:

Every energy source that has to be carried somewhere as electrical power carries two costs that are easy to forget: a supply risk at the far end of the chain, and a transport loss along the way. Coal has to arrive by rail or barge. Gas has to arrive by pipe or ship. Uranium has to be mined, converted, enriched and fabricated on three continents. Even wind and sun, which arrive free and locally, have to be carried from a windy coast or a sunny desert to a city that is somewhere else — over lines that lose a slice of the power, that can fail, and that cross borders somebody controls. There is no such thing as an energy source with no chain behind it.

The chain, with the losses that are usually left out of the brochure. Percentages are typical ranges, not constants: they vary widely by technology, age, distance and country. The headline number to keep is that between the energy in the fuel and the energy doing work at the socket, a large minority — often a majority — is gone.

7.1  Where the energy actually goes

7.2  The sources, and what each one is actually exposed to

Hydro
Cheap, long-lived, fast to ramp, and the only large-scale storage most countries have. Risk: drought and snowpack failure, silting of reservoirs, seasonal inflow that may not match demand, and in a dry year no substitute at all. Also a geopolitical risk where the river crosses a border upstream.
Nuclear
High output, steady, low fuel volume, weather-independent. Risk: a fuel chain concentrated in very few countries (section 8), cooling-water limits in heatwaves, decade-long build times and cost overruns, and concentration risk — a single unit is a gigawatt, so one unplanned outage is a national event.
Wind
No fuel, no fuel price, fast to build. Risk: output is a weather variable, correlated across whole regions, and worst in exactly the cold, still, high-pressure conditions that maximise demand. Needs firm backup or storage that is rarely counted in the headline cost.
Solar
Cheapest new generation in most of the world, and it matches daytime cooling demand very well. Risk: it produces nothing at night and least in midwinter — the exact hours heating-dominated grids peak. Also a supply-chain concentration risk in manufacturing.
Gas
The flexibility of the modern grid: it starts fast and fills the gaps everything else leaves. Risk: it is an imported commodity for most of the world, its price is the most volatile of any fuel, and it is usually the plant that sets the electricity price — so a gas shock becomes a power shock even where gas is a small share of the mix.
Coal
Storable on site in a heap that lasts weeks, which is a genuine security advantage. Risk: emissions and the policy attached to them, plus a bulky logistics chain by rail and barge that low water and strikes can cut.
Geothermal & biomass
Firm, weather-independent output where the geology or the feedstock exists. Risk: geographically limited; biomass carries a fuel-supply and land-use chain of its own.
Imports via interconnector
Often the cheapest megawatt available, and the fastest fix for a local shortfall. Risk: it is not capacity you control. In a continental cold snap every neighbour needs it at the same hour, and exports are the first thing a government restricts when its own lights are at stake.
The one-line test for any grid, anywhere: what happens on the coldest, stillest, darkest evening of the year if the largest single unit trips and the interconnector is already at its limit? Every serious electricity crisis is that sentence coming true.

8 · Nuclear fuel — uranium is a fuel, not a perpetual motion machine

Nuclear power is often discussed as though a reactor, once built, simply produces. It does not. A reactor consumes fuel, continuously, and that fuel has a supply chain as long and as concentrated as any pipeline. A typical plant is refuelled every 12 to 24 months, replacing roughly a third of its core each time. Stop the fuel chain and the reactor stops — later than a gas plant would, but it stops.

8.1  Where the uranium comes out of the ground

Share of world uranium mine production. Around three-quarters of it comes from just three countries. Figures are approximate and move a few points year to year (II).

Kazakhstan alone produces about 40% of the world’s mined uranium — a larger share of its commodity than Saudi Arabia has ever held of oil. Canada and Namibia follow, then Australia, Uzbekistan, Russia, China and Niger. Most Kazakh output is extracted by in-situ recovery, which is cheap, and much of it has historically left the country on routes that cross Russia.

8.2  The real bottleneck is not the mine

Uranium out of the ground is useless to a reactor. It has to pass through four more industrial steps, and each step exists in only a handful of places on earth:

So is uranium running out? Not soon, and not in the way oil is discussed — identified resources at current prices are usually put at roughly a century of present demand, and higher prices would make far more of it economic. But that is a statement about geology, not about supply. The binding constraints are the ten-to-fifteen year lead time from discovery to production, the tiny number of conversion and enrichment plants, and the reactor-specific fabrication step. A country can sit on uranium ore and still be unable to fuel its own reactors.
The genuine advantage, stated fairly: energy density. A year of fuel for a large reactor fits on a few trucks, so utilities routinely hold one to three years of inventory in a warehouse. No country can stockpile a year of gas or a year of oil that way. Nuclear’s supply chain is narrow and slow — but once the fuel is in the building, it is genuinely immune to next winter’s weather, freight rate and strait closure. That is a different risk profile, not a smaller one.

9 · Who gets hurt first — exposure by country

The measure below is net energy import dependency: the share of a country’s total energy use that has to be brought in from outside. Red means highly dependent on imported oil, gas or fuel — the countries that feel a disruption first and hardest. Green means broadly independent, or a net exporter. Amber is in between.

Country / blocImport dep.What that means in practice
Singapore~98%Imports essentially all primary energy. Survives on being a trading and refining hub — but has no domestic cushion at all.
Malta98%The most import-dependent country in the EU; an island grid on a single undersea link and imported fuel.
Taiwan~97%Island, no pipelines, LNG stocks measured in days rather than weeks. Structurally the most fragile large economy on this list.
Luxembourg91%No domestic production; entirely dependent on neighbours for fuel and power.
South Korea~92%Heavy industry plus almost no domestic fuel. Nuclear provides the only large non-imported block of electricity — and its fuel is imported too.
Jordan, Morocco, Lebanon~90–95%Import nearly all fuel with limited fiscal room to absorb a price spike. Where high energy prices turn into subsidy crises and street protest fastest.
Cyprus88%Isolated island grid, oil-dominated, with gas discoveries not yet at scale.
Japan~85–88%The world’s largest or second-largest LNG buyer by choice of necessity. Everything arrives by sea through the routes in section 4.
Italy~75–80%Gas-heavy power mix supplied from North Africa, Azerbaijan and LNG. Exposed to both the Mediterranean and the Gulf.
Turkey~70–75%Large importer of both oil and gas, with a currency that amplifies every dollar move in the price.
Germany~65–70%Industrial demand, no domestic gas of consequence, and inland waterways that carry the fuel. Exposed on two axes at once.
Switzerland~70%Strong hydro and nuclear for electricity, but essentially all oil and gas imported, and dependent on the same Rhine corridor and neighbouring grids as everyone around it.
Spain, Portugal, Greece~65–75%High import shares, but large and growing renewable output and several independent LNG entry points — better placed than the raw number suggests.
EU as a whole57%Nearly six of every ten units of energy used come from outside the bloc; about two-thirds of those imports are oil and petroleum products (IV).
India~40% totalThe total understates it: roughly 85–90% of crude oil is imported. Domestic coal cushions electricity; transport fuel has no cushion at all.
China~20% totalSame distortion: domestic coal keeps the total low, while over 70% of oil is imported and almost all of it passes Malacca. Hence the strategic reserve and the pipelines in section 5.
Latvia, Sweden, Finland27–33%Among the least dependent in the EU, on hydro, nuclear, biomass and wind.
Estonia5%The EU’s lowest, on domestic oil shale. Energy-independent, though not by a route anyone else would copy.
Brazilnet exporterSelf-sufficient in crude, hydro-dominated grid, large ethanol industry. Its exposure is to drought, not to straits.
United Statesnet exporterNet exporter of oil, gas and refined products. Still feels the price — oil is a world market — but not the physical shortage.
Canada, Australianet exportersLarge exporters of oil, gas, coal and uranium respectively. Structurally on the winning side of an energy shock.
Norwaynet exporterEurope’s largest pipeline gas supplier and a hydro-powered grid. The clearest example of energy independence in a developed economy.
Gulf producers, Russia, Kazakhstan, Algeria, Nigeria, Angolanet exportersSell into the shock. Their vulnerability is the mirror image: a price collapse, and in several cases a dependence on imported refined products despite exporting crude.

EU figures are the published 2024 import-dependency rates (IV); non-EU figures are approximate and given as bands. Dependency is a structural measure, not a forecast of who suffers most in any particular event.

Three warnings about reading this table. (1) Net exporter is not the same as safe — several large crude exporters import most of their refined fuel, and a refinery outage hurts them immediately. (2) A low total can hide a high fuel-specific dependency, as with India and China on oil. (3) Everyone pays the price. Physical supply and price are different exposures: an exporter is protected from the queue at the pump, not from what the world charges at it.

10 · What high energy prices actually do — fast and slow

An energy shock is not one event. It is a sequence, and the parts arrive on very different clocks. Knowing which effects are days away and which are years away is the difference between preparing and panicking.

The transmission timeline. The top band moves before most people have finished reading the news; the bottom band is still moving when the price itself has long since come back down.

10.1  Within days to weeks

10.2  Within one to twelve months

10.3  Over one to ten years

The distributional point, stated plainly. Energy is a larger share of the budget the poorer the household, and a larger share of costs the more physical the business. An energy shock is therefore regressive by construction — it is a tax that falls hardest on people and firms with the least ability to hedge, substitute or wait. Any policy response that ignores this simply moves the cost somewhere less visible.

11 · Fusion — when, realistically, and whether ever

Fusion deserves a straight answer rather than either the hype or the sneer, because the honest position sits between them.

Where fusion actually stands. The physics milestone is real and already passed. The engineering and economic milestones are not, and they are the ones that decide whether it ever powers anything.

11.1  What has genuinely been achieved

In December 2022 the National Ignition Facility in California produced more fusion energy from a fuel capsule than the laser energy delivered to it — about 3.15 MJ out for 2.05 MJ in. That is a real, historic result: scientific ignition. The caveat is equally real. Producing that laser pulse drew on the order of 300 MJ from the wall. Scientific gain and engineering gain are different things, and only the second one sells electricity.

11.2  What is still missing

11.3  The dates, as they currently stand

The planning conclusion. No fusion plant has ever supplied electricity to a grid, and none is close. Even on optimistic private timelines, first grid power is a 2030s event and any share large enough to change a country’s energy balance is a 2040s or 2050s one. For any decision you face in the next fifteen years — how to heat a building, what to hedge, where to site a factory — fusion is not an input. Treat it as a long-dated option that might pay off enormously and might not pay off at all, and build your plans on technologies that already work.

12 · What to watch, and what to do about it

The purpose of everything above is to be useful before the event. Here is the short list worth checking once a month, and the short list of things that are worth doing while nothing is happening.

12.1  The monthly watchlist

12.2  What is worth doing in calm weather

Framing: none of this is a market call, and none of it requires you to be right about the price. It is about arranging things so that being wrong is survivable — which is the only form of preparation that works, because the specific trigger is never the one anybody wrote down in advance. See also the disclaimer: this is educational material, not investment, legal or tax advice.

13 · Data freshness — checked monthly

Half of this page is live: the price board and the seasonality charts recompute from the market data feed every time the page loads, so they cannot go stale. The other half — volumes, capacities, production shares, project dates — is written text, and written text rots. It is reviewed on a monthly cycle and flagged here.

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If the flag above is amber or red, the written figures are past their review date. The live charts are still current regardless — they do not depend on the review.

Sources are cited inline by section, marked Source (I)–(IV): (I) German Federal Institute of Hydrology and Federal Waterways administration gauge data for Kaub, plus 2026 inland-shipping and freight-rate reporting; (II) World Nuclear Association world uranium mining production, and national producer reporting; (III) OECD Nuclear Energy Agency / IAEA uranium resources and fuel-cycle facility surveys, and US Geological Survey uranium supply-chain reporting; (IV) Eurostat energy import dependency statistics, 2024 reference year. Chokepoint volumes follow US Energy Information Administration world-chokepoint estimates. Prices and the seasonality statistics come from the site’s own market data feed and are computed at page load. All figures outside the live charts are approximate, move over time, and should be verified before being relied upon.

Article rev 1 · last revised 17 Sep 2026knowbase-oil-energy