Iran War Jolts Southeast Asia Energy Security Gamble

Southeast Asia assumed imported fuel could keep growth affordable, but the Iran war has turned that bargain into a Southeast Asia energy security liability. The International Energy Agency says the region’s reliance on oil and gas moving through the Strait of Hormuz has left it exposed to shocks that could cost “many billions of dollars” without faster diversification, according to ABC International.

The warning is blunt because the numbers are blunt. Southeast Asia’s energy import bill could rise to $245 billion by 2035, tripling from $80 billion in 2024, the IEA said. That is the core story beneath the headline: this isn’t just a wartime fuel-price scare. It is a stress test of an energy model built around imported fossil fuels, narrow supplier bases, and power systems that still need more domestic clean generation, better grids, and regional coordination.

“Diversification of energy sources and supply routes is now a central priority,” said Fatih Birol, the IEA executive director.

The Iran war scare exposes Southeast Asia’s fragile energy bargain

The old assumption was simple: imported oil and gas were risky in theory, but workable in practice. Ships arrived. Power plants ran. Consumers paid the bill, often with governments and utilities absorbing part of the volatility.

The Iran war has cracked that comfort. The IEA called it a “stark wake-up call” for Southeast Asia energy security because the region depends on oil and gas transported through the Strait of Hormuz, a route suddenly tied to war risk.

The source material points to a region already reacting. Electric vehicle sales are rising. Rooftop solar is booming in the Philippines. Governments are looking again at nuclear power. Laos has banned imports of fuel-powered vehicles for the rest of 2026 to cut oil imports and push EV adoption.

But the IEA’s message is that scattered responses won’t be enough. The deeper issue is structural: Southeast Asia still needs imported fossil fuels to keep power, transport, and industry moving. When a Middle East conflict disrupts confidence in those supplies, energy security, inflation, and climate policy collide.

A useful way to frame the shift:

• Before the shock: Imported fuel looked like a manageable cost of growth.
• After the shock: Imported fuel looks like a channel for inflation and crisis management.
• Before the shock: Clean power was mainly a decarbonization tool.
• After the shock: Clean power is also a hedge against fuel-route risk.

Southeast Asia’s oil and gas import risk is now visible in the bill

The IEA’s most important figure is the projected jump in the region’s energy import bill, from $80 billion in 2024 to $245 billion by 2035 if reforms lag. That projection turns energy security from a policy phrase into a balance-sheet problem.

The war has already pushed the region into what the report described as energy triage, with higher energy bills and rising inflation. The mechanism is straightforward. If imported oil and gas become more expensive or harder to secure, power generation costs rise. Transport costs can rise. Household electricity bills come under pressure. Governments face the choice of letting consumers absorb the pain or intervening to cushion the blow.

The IEA also said the crisis has reinforced reliance on coal during emergencies, a setback for efforts to phase down fossil-fuel dependence. That is the uncomfortable trade-off. In a crunch, governments may prioritize dispatchable power and price stability over transition goals.

This is where the Iran war connects directly to Southeast Asia energy security. The problem isn’t only whether prices spike today. It is whether power systems remain dependent on imported fuels whose supply routes can be rattled by events far outside the region.

Hormuz risk can reach households through power bills, not just fuel pumps

The source does not provide a country-by-country fuel exposure breakdown for Vietnam, Thailand, Singapore, or the Philippines, so the strongest supported conclusion is regional rather than granular: Southeast Asia’s power sector is too exposed to imported oil and gas from a limited number of suppliers.

Still, the IEA and AP reporting show how the shock is already moving through real economies. The Philippines declared a national energy emergency, and consumers have turned to rooftop solar at record rates as a quick response to rising utility bills.

“This is the first time I’ve seen a demand shock of this magnitude,” said Ivan Cano of Manila-based EcoSolutions.

The Philippines also became the second-largest destination for Chinese solar exports in the first quarter of 2026, with imports around three times higher than the same period last year, the IEA found.

That matters because it shows the transition is not only being driven by ministries or climate targets. Consumers are reacting to bills. They are buying panels. They are changing transport choices. The IEA said EV sales more than doubled in 2025 to around half a million units, and one in five cars sold regionally is electric.

For broader political context around the Iran war, XOOMAR has also covered the conflict’s cost debate in Obama Says Iran War Burned Billions and Left US Worse Off and the diplomacy surrounding a tentative end to the conflict in Trump's Iran Peace Deal Erases US Red Lines at Versailles.

Coal gets a crisis reprieve while nuclear gets a second look

The IEA report cuts against a clean, linear transition story. The war is spurring more renewables and EV adoption, but it is also strengthening coal’s role as emergency backup.

That contradiction is the point. When imported fuel systems wobble, governments reach for whatever keeps the lights on. The IEA said the conflict reinforced the need to rely on coal during energy crises. That does not mean coal solves Southeast Asia energy security. It means coal remains politically hard to abandon when reliability and affordability are under pressure.

Nuclear power is also back in the conversation. The report said the war is furthering nuclear plans in Southeast Asia, with Indonesia, Vietnam, and the Philippines possibly furthest along. But the IEA also flagged the obvious constraint: years-long construction and regulatory processes, with uncertain timelines.

That makes nuclear more of a medium-term option than a crisis response. Rooftop solar can appear on a home quickly. An EV purchase can cut fuel exposure immediately for a household. Nuclear power cannot be switched on as an emergency measure, especially in markets still working through construction, rules, and politics.

The winners from this shock are the technologies that cut imported fuel demand

The IEA’s prescription is not subtle. Southeast Asia needs to reduce overall demand for imported fossil fuels, make national grids more efficient, and invest more in solar, wind, hydro, and geothermal power. It also recommends regional energy sharing initiatives such as the Association of Southeast Asian Nations Power Grid.

That last point matters. Domestic renewables can reduce import exposure, but regional power sharing can spread resilience across borders if governments can overcome political barriers. Birol said the crisis could help neighboring nations move past barriers that have slowed the project.

Here is the practical split for stakeholders, based on the source and XOOMAR analysis:

Sam Reynolds of the Institute for Energy Economics and Financial Analysis framed the moment sharply:

“The IEA report clearly highlights that Southeast Asia is at a crossroads.”

He also said that despite a tentative deal to end the Iran war, fossil fuel prices will likely remain high, meaning “we will see a push towards more ambitious clean energy deployment.”

By 2035, the gap will be between reformers and crisis managers

The IEA’s forecast gives policymakers a hard test: either reduce imported fossil-fuel exposure, or risk a $245 billion import bill by 2035.

The strongest scenario for Southeast Asia is not one technology winning everything. It is a mix: faster rooftop and utility-scale renewables, more efficient grids, wider EV adoption, regional power trading, and careful planning for technologies such as nuclear where timelines are long. The weakest scenario is familiar: emergency coal use, delayed reforms, and repeated exposure to fuel shocks whenever geopolitics turns hostile.

The evidence to watch is concrete. Does rooftop solar growth in the Philippines continue after the immediate shock? Do Indonesia, Vietnam, and the Philippines turn nuclear interest into credible timelines? Does Laos’ fuel-powered vehicle import ban become an outlier, or a signal of tougher transport policy? Does ASEAN power-grid cooperation move from aspiration to execution?

The Iran war has already answered one question. Southeast Asia’s imported-fuel model is not as safe as it looked. The next question is whether governments treat this as a temporary price problem, or as the energy-security warning the IEA says it is.

Impact Analysis

• Southeast Asia’s dependence on imported oil and gas leaves it vulnerable to war-related supply shocks through the Strait of Hormuz.
• The IEA warns the region’s energy import bill could triple by 2035 without faster diversification.
• Rising EV adoption, rooftop solar, nuclear reviews, and regional coordination are becoming central to energy security.