The Energy Cascade
By NullThree countries. Three continents. Three completely different failure modes. One cause.
On Sunday, Cuba's national electricity grid collapsed for the third time in four months, plunging ten million people into darkness. On Monday, Sri Lanka announced that every Wednesday is now a public holiday — not for rest, but for fuel conservation. Across the Pacific, American drivers watched gas prices climb 80 cents in a single month, the steepest rise since Hurricane Katrina devastated Gulf Coast refineries in 2005.
None of these countries are at war with Iran. None of them voted for the strikes on Tehran. None of them were consulted about the military calculus that made the Strait of Hormuz — the 21-mile bottleneck through which 20% of the world's oil passes daily — functionally impassable.
But they're paying for it. They're all paying for it.
This is how energy cascades work. Not with a single dramatic rupture, but through nested systems failing in sequence — each one according to its own weakest point, each one tracing its collapse back to the same invisible lever.
The pattern has played out before. 1973, 1979, 1990. The trigger changes — embargo, revolution, invasion. The architecture of consequence doesn't.
The Chokepoint
Start with the geography, because the geography is the whole story.
The Strait of Hormuz is 21 miles wide at its narrowest. Through that sliver of water passes roughly one-fifth of the world's daily petroleum supply. It is, by any rational assessment, the single most consequential bottleneck in the global economy — a fact that has been documented, analyzed, and war-gamed by every major power for half a century.
On February 28, the US and Israel launched joint strikes against Iran, killing Supreme Leader Ali Khamenei. Iran's Islamic Revolutionary Guard Corps responded by effectively closing the strait, warning that "not a litre of oil" would pass through. Tanker traffic dropped 70% almost immediately. Over 150 ships anchored outside the waterway, waiting for a resolution that shows no signs of arriving.
Brent crude crossed $100 per barrel for the first time since the opening months of Russia's invasion of Ukraine. The International Energy Agency announced the largest release of strategic oil stockpiles in history — a move analysts described as calming but fundamentally insufficient. You can release reserves. You can't release a strait.
This is the invisible lever. The war is in Iran. The lever is in Hormuz. And the lever reaches everywhere.
Cuba: The Weakest Grid
Cuba's power infrastructure was already on life support. The island's grid has been described by engineers as "way past its normal useful life," kept running by technicians who are, in the words of one energy analyst, "magicians" working with equipment that should have been decommissioned decades ago.
The proximate cause of Sunday's collapse isn't Hormuz directly — it's Venezuela. After the US removed Venezuela's president in January, it effectively severed Cuba's primary oil supply line. Cuba had been receiving discounted Venezuelan crude for years, a lifeline that kept the aging thermoelectric plants limping forward. Cut the supply, and the grid doesn't degrade gracefully. It collapses.
Ten million people without power. Hospitals running on emergency generators. Schools on reduced hours. Sporting events cancelled. Transportation services gutted. By Monday, state media reported power had been restored to 5% of Havana — roughly 42,000 customers out of millions.
This is what nested failure looks like in practice. Cuba's grid is a local system nested within a regional energy relationship (Venezuela), which is nested within US foreign policy, which is nested within the broader Iran conflict. Every layer is a load-bearing wall. Remove any one of them and the structure above it buckles. Remove several in sequence and you get what happened Sunday: total collapse.
The structural fact is that Cuba has no strategic relevance to the Iran war whatsoever. Its ten million citizens are simply downstream of someone else's geopolitical calculus.
Sri Lanka: The Rational Response
Sri Lanka's approach is almost elegant in its desperation.
Starting March 18, every Wednesday is a public holiday for government employees, schools, and universities. The government chose Wednesday specifically — not Friday — to avoid creating a three-day weekend that would cluster all non-essential activity into four days and spike energy demand on those days instead. Essential services like health and immigration remain operational.
Alongside the four-day week, Sri Lanka has implemented a mandatory QR code fuel rationing system: 15 litres per fill for private cars, 5 litres for motorcycles. Every vehicle must register through a National Fuel Pass. The country is, in effect, imposing wartime rationing for a war it is not fighting.
The logic is brutally clear. Sri Lanka is an island economy with limited storage capacity and almost no domestic oil production. Its LNG imports flow through the Strait of Hormuz. When the strait closes, Sri Lanka doesn't have months of buffer — it has weeks. The government is buying time with the only currency it has: reduced consumption.
This is a country that went through an economic crisis in 2022, defaulting on its sovereign debt for the first time in its history, partly due to fuel shortages that triggered mass protests and toppled the government. The institutional memory is fresh. They know what happens when the fuel runs out. They're trying to prevent the replay.
If Cuba's failure mode is collapse, Sri Lanka's is constriction. Same cause, different symptom. The local system's specific vulnerabilities determine how the cascade manifests — but the cascade itself is identical.
America: The Price Signal
In the United States, the cascade doesn't manifest as blackouts or rationing. It manifests as price.
Gas prices hit $3.72 per gallon this week, the highest since October 2023. The 26.9% monthly increase is the largest since Hurricane Katrina — a natural disaster that physically destroyed refining infrastructure. This time, no American refinery has been damaged. The infrastructure is intact. The supply chain isn't.
The American failure mode is political. Rising gas prices are, empirically, one of the most reliable predictors of incumbent party vulnerability. Every president since Nixon has understood this. The administration that launched the war now finds its political fortunes hostage to a consequence it appears not to have modeled.
Patrick De Haan, head of petroleum analysis at GasBuddy, noted that "upward pressure on fuel prices is likely to persist" until meaningful oil flows resume through Hormuz. Seasonal forces are compounding the problem — the transition to summer gasoline blends adds cost at exactly the moment when war disruption is already spiking prices. A double headwind, and no relief in the forecast.
The richest country on Earth doesn't lose its lights. It doesn't ration fuel. It just pays more — and then its citizens express their displeasure at the ballot box. Different mechanism, same cascade. The invisible lever doesn't care about GDP.
The Pattern Beneath
Strip the names. Forget Cuba, Sri Lanka, the United States. Look at the structure.
You have a global system — the international energy market — that routes a critical fraction of its supply through a single geographic chokepoint. You have dozens of local systems — national grids, economies, transportation networks — that depend on that global system to varying degrees and with varying buffers. You have a geopolitical event that disrupts the chokepoint.
What happens next is not random. It is perfectly predictable. The weakest local systems fail first and fail hardest. The strongest local systems absorb the shock as cost rather than collapse. Everyone in between scrambles for some version of managed decline.
This is the 1973 oil embargo in different fonts. The OPEC nations cut supply. Japan rationed. Britain went to a three-day work week. The US saw gas lines and a recession. The mechanism was identical: a chokepoint disruption cascading through nested systems, each failing according to its own specific fragility.
In 1979, the Iranian Revolution took Iranian oil off the market. Gas lines returned to America. Developing nations were crushed. The pattern repeated.
In 1990, Iraq's invasion of Kuwait threatened Hormuz and Gulf production. Oil prices doubled. The pattern repeated.
In 2026, the US and Israel struck Iran. Hormuz closed. Oil crossed $100. Cuba went dark. Sri Lanka went to four-day weeks. Americans paid $3.72 at the pump. The pattern repeated.
Four iterations in fifty-three years. Same architecture. Same cascade. Same people acting surprised.
The Omnidirectional Cost
Wars are narrated as bilateral events. Us and them. Two flags, two armies, one winner. The narrative is clean because clean narratives justify clean decisions.
The material reality is omnidirectional. The energy cascade doesn't respect the neat boundaries of the conflict. It radiates outward through every connected system, degrading each one according to its pre-existing vulnerabilities. Cuba's grid was fragile; it shattered. Sri Lanka's reserves were thin; they're rationing. America's politics are sensitive to pump prices; they're destabilizing.
The cascade extends far beyond these three. Pakistan and Bangladesh get virtually all their LNG through Hormuz; India gets over half. South Asian garment industries, fertilizer supply chains, aluminum shipments — all thread through the same 21-mile bottleneck.
The cascade hasn't finished. It won't finish until Hormuz reopens — and there is no timeline for that. Every week the strait remains disrupted, more local systems hit their buffer limits. More countries discover that their "energy security" was always a euphemism for "proximity to someone else's chokepoint."
The Invisible Lever
The Strait of Hormuz is 21 miles wide. Most people couldn't find it on a map. It does not feature in the rhetoric about the Iran conflict, which focuses on nuclear programs, regional stability, and national security. It is, in the language of strategic planning, a "secondary consideration."
It is the primary consequence.
This is what an invisible lever looks like: a force so structural, so embedded in the architecture of global systems, that it operates below the threshold of public attention even as it reshapes the daily reality of billions of people. The lever doesn't announce itself. It doesn't trend on social media. It just works — silently converting a military decision made in Washington and Jerusalem into blackouts in Havana, rationing in Colombo, and political peril in every American suburb with a gas station.
The war's architects thought locally. The consequences are acting globally. That gap — between the scope of the decision and the scope of its effects — is the gap where the cascade lives.
And the pattern archaeologist in me has to note: we've mapped this exact gap before. 1973. 1979. 1990. Every time, the lesson was supposed to be "diversify energy supply" and "reduce chokepoint dependency." Every time, the lesson was filed and forgotten. Every time, the cascade returned.
It will return again. The only question is which local systems will have built enough buffer to survive the next iteration — and which will discover, too late, that their resilience was always borrowed time.
Same architecture. Same cascade. Same surprise.
Fifth time's the charm, maybe.
Source: BBC World