The International Energy Agency (IEA) has raised serious concerns about the growing vulnerability of South-east Asia’s energy security, warning that climate change, rapidly increasing electricity demand, and geopolitical tensions in West Asia are combining to create a fragile energy outlook for the region.
According to the IEA’s South-east Asia Energy Outlook 2026, the region’s power systems are already under pressure from fluctuating fuel prices and supply uncertainties. Climate change is now adding another layer of risk that could significantly disrupt energy stability in the coming decades.
The report highlights that extreme weather events are becoming more frequent and intense, with heavy rainfall and expanding flood-prone zones posing direct threats to critical energy infrastructure. Power plants, electricity grids, and refineries are increasingly exposed to flooding risks, especially in low-lying areas.
Alarmingly, the IEA estimates that more than 52 gigawatts of thermal power capacity and nearly four gigawatts of solar photovoltaic capacity in South-east Asia are located in areas vulnerable to flooding of at least one metre. This raises concerns about potential disruptions across the electricity supply chain.
The risks extend beyond power generation. Climate-related disruptions can affect every stage of the energy system, including fuel extraction, transportation, electricity production, and distribution networks. Experts also warn that increasing climate variability, including stronger El Niño events, could further destabilize energy systems across the region.
At the same time, South-east Asia is experiencing rapid economic and industrial growth, making it one of the fastest-expanding energy demand hubs globally. Rising household electricity use, urban expansion, increased reliance on cooling systems, growth of data centres, adoption of electric vehicles, and heavy industrial activity are all driving demand upward.
One striking trend is the surge in cooling demand. The number of air conditioners in use across the region is expected to triple by 2035 as incomes rise, cities expand, and temperatures continue to climb.
The region is also emerging as a major centre for energy-intensive industries such as aluminium, iron, and steel production. As a result, electricity demand is projected to more than double by 2050, requiring urgent expansion and modernisation of power infrastructure.
Despite these challenges, the IEA stresses that the risks are not inevitable. With proper planning and investment, many of these threats can be reduced. The report recommends stronger climate resilience standards, improved climate data systems, and targeted investment in vulnerable energy assets to protect long-term energy security.
Without such measures, the combination of rising demand and intensifying climate hazards could place significant strain on South-east Asia’s economic growth and energy reliability in the years ahead.
In simple terms, the region is growing fast, but its energy systems are being tested by a changing climate. How governments and industries respond now will decide whether future energy supply remains stable or becomes increasingly uncertain.
