The U.S.-Israeli war with Iran has upended oil and gas supplies, prompting some countries to ration fuel and others to roll out subsidies and tax cuts to shield consumers from surging prices. Early signs indicate the war, which began two months ago, is speeding up some countries' low-carbon transition.

Simon Stiell, Executive Secretary of the U.N.'s climate secretariat UNFCCC, put it bluntly: "Those who've fought to keep the world hooked on fossil fuels are inadvertently supercharging the global renewables boom."

Chinese exports of solar technology, batteries and electric vehicles all reached record highs in March, according to energy think tank Ember , while the S&P Global Clean Energy Transition Index, which tracks 100 companies that produce solar, wind, hydro, biomass and other renewable energy across emerging and developed markets, is up 70.92 percent year on year.

UK Solar Installations Hit Decade High as Energy Bills Surge

More than 27,000 solar installations were completed in March 2026 - the highest monthly total since 2012 - bringing the total number of solar installations across the UK to more than two million for the first time.

Solar capacity increased by 11.7% over the past year, adding 2.3 GW of clean, homegrown electricity to Britain's energy mix.

Energy secretary Ed Miliband said of the figures: "This is our clean energy mission in action - helping families weather global energy shocks, bringing bills down, and getting Britain off the fossil fuel rollercoaster."

Jess Ralston, head of energy at the Energy and Climate Intelligence Unit (ECIU), said the British public is "clearly viewing net zero technologies like solar as the solution to energy bill volatility and protection from what have essentially been back-to-back oil and gas crises".

Demand for rooftop solar systems across Europe has surged, while countries including Pakistan have reported a jump in electric vehicle sales.

In the first three weeks after the war began, Octopus Energy in the U.K. saw a 50-percent surge in solar panel sales and a 30-percent jump in heat pump demand.

First Solar Posts Record Revenue as Demand Soars

American solar manufacturer First Solar reported strong first-quarter results that underscore the sector's momentum. Net sales were $1.04 billion for the first quarter of 2026, a 24% increase compared to the first quarter of 2025, driven primarily by an increase in the volume of modules sold to third parties.

First Solar posted net sales of $1.04 billion, up 23.6% year over year, as module volumes rose 30.9%. Gross margin improved to 46.6%, reflecting lower logistics costs and a richer mix of U.S.-produced modules that qualify for Section 45X credits.

The company said its "differentiated technology, our domestic manufacturing footprint, and our independence from Chinese supply chains are attributes that are increasingly valued by our customers."

China Dominates as Global Wind Power Hits Record 165 GW

The global wind industry installed a record 165 gigawatts of new capacity last year, up 40% from 2024 and mostly driven by China, a report by the Global Wind Energy Council said.

China made up the bulk of that, adding a record 120.5 GW of new wind capacity. Europe was the second-highest region for installations, commissioning 19 GW of new capacity.

China's newly installed solar and wind power capacity exceeded 430 million kilowatts in 2025, an increase of 22 percent year on year, hitting a record high. This surge propelled the cumulative grid-connected capacity of wind and solar power to 1.84 billion kilowatts, accounting for 47.3 percent of the country's total installed power capacity and surpassing thermal power for the first time.

Trump Administration Battles Offshore Wind Despite Energy Crisis

Even as the Iran war drives countries toward energy independence, the Trump administration continues its campaign against offshore wind. The Department of the Interior announced that it is pausing—effective immediately—the leases for all large-scale offshore wind projects under construction in the United States due to national security risks identified by the Department of War in recently completed classified reports. This pause will give the Department, along with the Department of War and other relevant government agencies, time to work with leaseholders and state partners to assess the possibility of mitigating the national security risks posed by these projects.

One after another, federal judges have sided with all five wind farms impacted by the Interior Department's pause, allowing them to resume construction, at least temporarily. Royce Lamberth, the district court judge who issued a preliminary injunction allowing the Sunrise Wind project in New York to continue, had the opportunity to review the classified report on wind's supposed national security risks—but was not persuaded. "Purportedly new classified information does not constitute a sufficient explanation for the bureau's decision to entirely stop work on the Sunrise Wind project," Lamberth said from the bench.

Late last year, the Trump administration invoked classified national security threats to stop work on five wind farms that were under construction, but courts have ruled that the projects can proceed.

New York Gov. Kathy Hochul, a Democrat, condemned the agreement. "Using a pay-not-to-play scheme to pressure a company to not build offshore wind is an outrageous abuse of taxpayer dollars," Hochul said in a statement to The New York Times. Environmental groups also blasted the deal, with some noting that it comes as Trump's war with Iran has caused chaos for global oil markets.

Energy Security Becomes the New Climate Argument

Gonzalo Escribano, senior fellow for energy and climate of Elcano Royal Institute, a think tank in Madrid, said the way countries think about renewables has "definitely" changed in the wake of the conflict. A pivot to clean energy sources is now not necessarily seen as going green, but rather an attempt to shore up domestic energy security.

Sam Butler-Sloss, research manager at global energy think tank Ember, told CNBC: "The Iran crisis accelerates the shift to renewables and electrification. High fossil prices drive switching, making already cheap electrotech even more competitive."

He estimated that scaling up EVs could save importers more than $600 billion a year in oil imports, describing the switch as a "security superlever."

According to market data, WTI crude traded at $71.50 per barrel on Friday, up 0.6%, while Brent crude stood at $75.20 per barrel, up 0.5%. Natural gas prices at Henry Hub fell 2.4% to $3.25 per MMBtu. SPAC issuance hit 62 deals in Q1 2026, raising $11.8 billion — nearly four times the volume of Q1 2025 — with energy transition cited as a priority sector.

The paradox is stark: a war over fossil fuel chokepoints is proving to be one of the strongest accelerants for clean energy adoption in modern history. Whether that momentum survives a resolution to the conflict may determine the pace of the energy transition for years to come.