Iran War's Energy Paradox: How a Fossil-Fuel Shock Is Pushing the World Toward Clean Power

When the US and Israel launched their war on Iran in February, the conflict was expected to be over in weeks. Eight months later, it has become something no one predicted: one of the most disruptive forces in the history of global energy — and, in a deeply counterintuitive way, one of the biggest accelerants of the clean energy transition the world has seen.

Iran's move to strangle the Strait of Hormuz — the narrow waterway that normally carries roughly one-fifth of the world's oil and gas — sent oil prices surging past $100 a barrel in what analysts are calling the biggest oil shock in history. Shipping costs through the strait have remained elevated even as Iran's chokehold has partially loosened, and new fronts have opened up, including attacks by Iran-backed Houthis on Saudi oil facilities and tankers.

The economic pain has forced a reckoning. More than 30 governments have enacted policies to transition away from fossil fuels or improve energy efficiency in direct response to the conflict. Global EV sales rose 4% in the second quarter of 2026, with Europe hitting record highs and Australia and parts of Asia experiencing booms. Solar investment in Southeast Asian countries — which depend heavily on Gulf liquefied natural gas — roughly quadrupled in the first two quarters of 2026, according to data from the Rhodium Group.

The new geopolitics of energy is driving clean energy solutions and electrification.— Amy Myers Jaffe, Director, Global Energy, Climate, and Sustainability Lab, New York University

The demand destruction has been significant enough to flip the IEA's forecasts. Back in January, the agency projected global oil demand would rise by 930,000 barrels per day in 2026. By September, it was forecasting a decline of 2.5 million barrels a day, attributing the reversal to the ongoing impasse in US-Iran negotiations. Global fossil fuel emissions are now on track to fall around 0.5% in 2026 — the first decline since the Covid pandemic year of 2020. The IEA also now estimates that peak oil consumption may arrive this year, rather than in 2029 as previously forecast.

The central irony is impossible to ignore. President Trump — who has called global warming a 'hoax,' described clean energy as a 'scam,' rolled back environmental protections, and cut support for EVs — may be presiding over a geopolitically forced acceleration of the very transition he has worked to slow.

With all [Trump's] efforts to encourage fossil fuel use, he might end up accelerating their phase down instead.— Samantha Gross, Director, Energy Security and Climate Initiative, Brookings Institution

California Governor Gavin Newsom went further, calling Trump the 'greatest gift' to the environmental movement because of the war's knock-on effects. Speaking during Climate Week in New York, Newsom said the conflict had 'completely gutted any sort of romantic notions of energy security' and was 'accelerating investments in clean energy and renewables.'

Experts are careful to note the limits of this framing. Trump's domestic policy changes — cuts to renewable energy funding, weakened air pollution regulations, and support for data centers — will almost certainly increase US carbon emissions. American EV sales have slumped more than 30% this year, as the administration cut support for them and effectively banned cheaper Chinese models. The 'accidental environmentalist' label, analysts say, applies to the global picture, not the domestic one.

The picture is further complicated by coal. As expensive oil and gas have pushed some countries toward renewables, others have turned to the dirtiest fossil fuel as a cheaper short-term fix. Global coal demand is now projected to rise 1.2% in 2026, reversing earlier forecasts of a small decline.

Governments are currently doing a dance between acknowledging the importance of clean power while continuing to support fossil fuel expansion. We are seeing an old and a new world interact in contradiction with each other.— Pauline Heinrichs, Lecturer of War Studies, King's College London

The durability of any clean energy shift depends heavily on how long the conflict lasts. A DNV analysis found that for every month the war continues, the probability of permanent oil 'demand destruction' increases. If the war runs four years, DNV projects oil demand will never return to 2025 levels.

If the war lasts for four years, for example, then our analysis shows that oil demand will never resume to the level we had in 2025.— Sverre Alvik, Vice President and Energy Transition Outlook Director, DNV

Some experts warn against over-optimism — the pandemic offered a similar moment of apparent energy disruption, only for fossil fuel demand to surge in 2021. The IEA itself projects a recovery in oil demand for 2027. Structural change, researchers at the Climate TRACE emissions database argue, requires sustained government policy and incentives, not just price shocks.

We need that action over years, to decades, to make a dent in the climate problem.— Rob Jackson, Climate Scientist, Stanford University

What may prove harder to reverse is the strategic lesson the war has taught governments about fossil fuel vulnerability. Iran demonstrated that drones and missiles — not a powerful navy — are sufficient to strangle a critical waterway. That knowledge, analysts say, has permanently changed how governments think about energy security. The question now is whether the policy responses harden into lasting infrastructure and law, or fade when prices ease.

We cannot continue relying on fossil fuels neither for energy nor for material.— Delphine Lvi Alvars, Global Petrochemicals Campaign Manager, Centre for International Environmental Law

Why it matters — The Iran war has become an unplanned stress test of the global energy system, and its outcome — whether the clean energy gains outlast the conflict or fade like those after Covid — will shape emissions trajectories and energy security policy for decades.

Reported by cnn.com, oilprice.com, canarymedia.com