Southeast Asia is the New Engine of China’s Clean-Tech Boom

China’s clean-energy manufacturers are finding an increasingly important outlet in Southeast Asia, as governments across the region spend heavily on solar power, batteries, electric vehicles and electricity grids to keep pace with industrialisation and rising power demand.

The Association of Southeast Asian Nations comprises Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand and Vietnam. Timor-Leste became ASEAN’s 11th member in October 2025.

Together, ASEAN countries have spent more than $20bn on Chinese-made clean-technology products in 2026, according to energy think tank Ember, about 50 per cent more than during the comparable period last year. The region has consequently become the largest Asian market for Chinese clean-tech exports.

The significance extends beyond a surge in bilateral trade. Southeast Asia is becoming an increasingly important outlet for China’s enormous clean-technology manufacturing capacity at a time when access to some developed markets is becoming more politically and commercially difficult.

For China, this is partly an export-market story. For Southeast Asia, it is fundamentally an electricity story.

The region’s energy demand has increased by more than 35 per cent over the past decade, while electricity demand has risen by more than 60 per cent. The International Energy Agency attributes the increase to expanding electricity access, industrial consumption, urbanisation, rising incomes and growing demand for cooling and appliances.

That creates a market particularly suited to China’s industrial strengths: solar modules, batteries, electric vehicles, power electronics and grid equipment.

Southeast Asia’s energy transition should not, however, be mistaken for a straightforward replacement of fossil fuels with renewables.

Historically, fossil fuels have supplied most of the region’s additional energy demand. The IEA says total energy demand is now about 40 per cent higher than in 2015, with fossil fuels supplying most of that increase. Coal demand has grown particularly rapidly, at an average rate of about 8 per cent a year, lifting coal’s share of the region’s total energy mix from 20 per cent in 2015 to about 30 per cent today.

That history matters because it explains why clean-technology imports are rising without necessarily producing an immediate collapse in coal consumption.

The region is adding clean energy to an expanding power system rather than simply replacing an old one.

The IEA expects Southeast Asia’s electricity demand to grow by an average 5.3 per cent a year between 2026 and 2030, faster than many other major regions.

The longer-term implications are even larger. Under current policy settings, Southeast Asia is expected to account for about 25 per cent of global energy-demand growth between now and 2035, second only to India, according to the IEA. By 2050, the region’s energy demand is expected to surpass that of the European Union.

That means Southeast Asia will need vast quantities of generation equipment, transmission infrastructure and storage regardless of how quickly individual countries phase down fossil fuels. China is well positioned to supply that expansion.

ASEAN countries have spent about $4.1bn on Chinese solar products so far in 2026, almost 90 per cent more than during the comparable period of 2025. ASEAN accounted for 57 per cent of China’s solar exports across Asia. The Philippines, Malaysia, Indonesia and Vietnam were among the largest buyers, with their spending roughly doubling from a year earlier.

But solar is only part of the story. Southeast Asian buyers have spent just under $7bn on Chinese energy-storage batteries, about $1.6bn on grid components, $1.2bn on heating and cooling systems and $6.3bn on electric vehicles so far this year, according to the Ember data cited by Reuters.

The breadth of those purchases becomes crucial. A market buying solar panels alone could simply be experiencing a temporary installation boom. A market simultaneously buying batteries, grid equipment, electric vehicles and cooling systems is building the infrastructure of a more electrified economy.

That makes Southeast Asia strategically different from some earlier export markets for Chinese clean technology.

China’s clean-tech export model has already encountered the limits of relying on wealthy Western markets.

Europe became a major destination for Chinese clean technologies, particularly solar equipment and electric vehicles. But trade investigations, tariffs and industrial policies have complicated the outlook for Chinese manufacturers in several European markets. China’s clean-tech exporters are therefore increasingly looking to emerging markets where electricity demand and infrastructure investment are growing rapidly.

Southeast Asia offers an unusually attractive combination. It is geographically close to China, deeply integrated into Chinese manufacturing supply chains and itself becoming an important production centre for electronics, automobiles and other industrial goods.

The industrial relationship is also moving beyond finished-product exports.

Indonesia has become central to China’s expansion in batteries and electric vehicles because of its position in the nickel supply chain. The IEA identifies Indonesia as the dominant player in Southeast Asia’s coal market, accounting for nearly 90 per cent of regional coal production and close to half of coal demand. Vietnam, Thailand and the Philippines also produce coal for domestic use.

Vietnam, Thailand, Malaysia and Indonesia are simultaneously becoming important manufacturing locations for global supply chains, creating the potential for Chinese companies to establish production capacity closer to their customers rather than simply shipping finished products from China.

This creates a feedback loop. Chinese companies supply technology and capital. Southeast Asian countries provide growing markets, manufacturing capacity, minerals and investment incentives. Industrialisation then increases electricity demand, which creates additional demand for solar, batteries, grid equipment and other technologies.

That is a considerably more durable proposition than simply exporting finished solar panels.

Yet there is an uncomfortable contradiction at the heart of Southeast Asia’s clean-tech boom.

The region is buying record quantities of equipment designed to reduce emissions while continuing to rely heavily on coal.

The IEA says coal remains central to Southeast Asia’s electricity system because the region has a relatively young coal-fired generation fleet that can provide flexibility and backup capacity as other sources expand.

Indonesia illustrates the problem particularly clearly. Its coal industry is not simply connected to electricity generation; coal is also embedded in the country’s expanding industrial economy, including energy-intensive metals processing. The IEA expects coal to remain important even as renewable generation expands.

This is why the clean-tech boom should not be interpreted as evidence that Southeast Asia is already decarbonising at the pace required by climate targets.

It is better understood as an infrastructure race.

Governments need to accommodate factories, data centres, air conditioners, electric vehicles and rising household consumption. Solar and wind can provide additional generation, but they also require transmission, storage and balancing capacity.

The transition therefore depends as much on what Southeast Asia builds next as on what it retires.

The most strategically significant figure in the latest trade data may therefore not be the $4.1bn spent on solar equipment, but the nearly $7bn spent on energy-storage batteries.

Solar panels generate electricity only when the sun is available. As their share of generation rises, electricity systems need greater flexibility to shift power across hours and manage fluctuations.

Southeast Asia’s grids have historically been fragmented across national markets and archipelagos. Indonesia and the Philippines face the additional challenge of connecting populations and industrial centres spread across thousands of islands. The IEA identifies grids and investment in electricity infrastructure as key requirements for the region’s transition.

The scale of that investment is substantial. The IEA estimates total energy investment in Southeast Asia at about $100bn in 2025, rising to around $130bn by 2035 under its stated-policies and current-policies scenarios, and to almost $190bn by 2035 under its accelerated-policies scenario. By 2050, investment could reach about $250bn under the accelerated scenario.

That suggests the next phase of the China-Southeast Asia relationship may be less about selling individual pieces of equipment and more about building an integrated electricity system.

For China’s manufacturers, Southeast Asia offers something Europe increasingly cannot: a rapidly expanding market with enormous additional electricity demand and governments seeking investment.

For Southeast Asian governments, China offers something equally valuable: manufacturing scale and relatively low-cost technology at a moment when energy infrastructure needs are growing faster than domestic industrial capacity.

The relationship is therefore likely to become more complicated than a simple exporter-importer arrangement.

Some ASEAN countries will seek to attract Chinese factories rather than merely import Chinese products. Others will try to build domestic champions while retaining access to Chinese supply chains. Governments will also face pressure to diversify suppliers because dependence on a single country for critical energy technologies carries its own strategic risks.

For now, however, the direction of travel is getting clearer. Southeast Asia’s economic growth is creating an enormous requirement for electricity at precisely the moment China possesses the world’s deepest manufacturing capacity in many of the technologies needed to produce, store and consume that electricity. The IEA expects Southeast Asia to be one of the fastest-growing electricity-demand regions through the end of the decade, with annual growth of 5.3 per cent from 2026 to 2030.

The result is an alignment of economic interests that could last for decades.

The irony is that China’s clean-tech export boom is not necessarily being driven by the world’s most advanced green economies. It is increasingly being driven by countries still building their basic industrial and electricity infrastructure.

Southeast Asia’s energy transition will therefore not resemble Europe’s. It will be larger, more carbon-intensive and more dependent on new electricity demand.

That makes the region not merely a new destination for China’s clean-tech exports, but potentially one of the defining markets for the next phase of China’s global industrial expansion.

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