The Great Migration of Electrolytic Aluminum Across Thousands of Miles: Welding a "Strategic Bulletproof Vest" for Made in China

China’s green transformation of the aluminum industry is attracting significant international attention.

The Financial Times recently reported that China’s aluminum industry has embarked on a path of green development.

According to industry data, China’s electrolytic aluminum production reached 43.8 million tons in 2024, accounting for about 60% of the world’s total output.

Approximately 13 million tons of capacity from northern coal-producing regions such as Shandong, Henan, and Xinjiang have been relocated westward to water-rich areas like Yunnan and Sichuan, with scale comparable to the entire North American electrolytic aluminum output.

This epic industry migration has effectively armored China’s manufacturing sector with a “strategic bulletproof vest.”

Electrolytic aluminum is a typical high-energy-consuming industry, with electricity accounting for up to 31% of production costs. Energy costs directly influence the industry’s layout.

For a long time, China has maintained a pattern of “building on coal, with heavier industry in the north and lighter in the south.”

Around 2010, the industry was still rapidly expanding along the “Eastern Aluminum, Western Expansion” trajectory—where there was coal, factories were built, and capacity concentrated in coal-rich areas like Xinjiang and Inner Mongolia.

A real turning point occurred in 2017.

That year, four ministries jointly issued the “Special Action Plan for Cleaning Up and Rectifying Illegal and Violating Projects in the Electrolytic Aluminum Industry,” setting a capacity cap of 45 million tons for the first time and implementing strict “equivalent replacement” mechanisms—new projects must meet compliant capacity indicators, no longer relying on coal mine resources.

Due to strict environmental controls, capacities in Beijing, Tianjin, Hebei, and surrounding areas were forced to shut down, becoming the main export regions for capacity.

Seeking cheaper energy sources has always been a core consideration for aluminum companies.

Regions like Yunnan and Sichuan, with abundant and inexpensive hydropower resources and relatively relaxed environmental capacity, began absorbing capacity displaced from the north.

The trend shifted—“Northern aluminum” started moving southward.

In 2018, China Aluminum Group took the lead by relocating 1.2 million tons of capacity to Yunnan.

In 2019, displacement peaked, with over 3 million tons of electrolytic aluminum capacity transferred across provinces nationwide, of which 2.46 million tons went to Yunnan.

That year, Shandong Weiqiao, the largest private aluminum enterprise in the north, transferred 2 million tons of capacity to Wenshan, Yunnan, marking a significant shift from coal-fired to green electricity.

Meanwhile, companies like Henan Linfeng Aluminum and Zhongfu Industrial also moved about 500,000 tons of capacity into Guangyuan, Sichuan, leveraging local low-cost green electricity to revive capacity.

Within just a few years, southwestern border regions have emerged as new highlands for China’s electrolytic aluminum.

By 2024, the total capacity of electrolytic aluminum in Yunnan, Sichuan, Guizhou, and other southwestern provinces exceeded 13 million tons, roughly 30% of the national total.

Electrolytic aluminum is a typical heavy asset industry.

Industry relocation means abandoning the mature supply chains, supporting facilities, and skilled workers in the north to rebuild power grids, factories, rail yards, and logistics systems in the southwest.

For example, the Weiqiao Yanshan project alone invested 3.5 billion yuan in supporting power grid infrastructure, with employee relocation costs reaching 2 billion yuan.

Why does the country still promote this costly “north-to-south aluminum migration” involving hundreds of billions of yuan and tens of millions of tons of capacity?

How should this be calculated?

To answer this, one must look beyond short-term relocation costs and consider three key dimensions from the perspective of the resource endowment in the southwest.

First, resource optimization.

China’s hydropower resources are concentrated in the southwest, while traditional electrolytic aluminum capacity is in the north.

This “energy in the south, high-energy industry in the north” spatial mismatch creates a prominent contradiction: the southwest has long suffered from “water abandonment.”

In 2021, water abandonment in Yunnan exceeded 10 billion kWh, enough to support a million-ton electrolytic aluminum plant operating year-round; Sichuan also experienced severe water abandonment during flood seasons, with large amounts of clean electricity wasted.

The electrolytic aluminum industry, a “power-hungry tiger,” is ideally suited to absorb surplus hydropower.

Taking Yunnan as an example, the province’s electrolytic aluminum capacity jumped from 1.5 million tons in 2017 to 6.3 million tons in 2024, with over 85% of its electricity coming from green sources.

Second, industry competitiveness.

The EU’s Carbon Border Adjustment Mechanism (CBAM) has been officially implemented, and the EU remains one of China’s most important export markets for aluminum.

Continuing to produce electrolytic aluminum with traditional coal-fired power will result in high carbon taxes upon export, directly weakening China’s competitiveness.

Water-powered aluminum has a carbon footprint only 1/7 of that of coal-powered aluminum.

In 2023, Hongtai New Materials in Yunnan obtained China’s first carbon footprint certificate for electrolytic aluminum, with a water-powered aluminum carbon footprint of just 1.8 tons CO₂ per ton of aluminum—86% lower than coal-powered aluminum.

At the EU’s carbon tax rate of 85 euros per ton, exporting one ton of Yunnan green aluminum can save about 340 euros in carbon taxes.

The original trade barriers in the EU have, paradoxically, become a protective barrier for China’s green aluminum.

Third, regional development.

In the past, the southwest could only transmit raw electricity eastward via “West-to-East Power Transmission,” with minimal energy benefits, and the local industry chain, employment, and tax revenue remained limited.

The establishment of electrolytic aluminum industries has fundamentally changed this pattern.

In 2024, Yunnan’s green aluminum output value exceeded 200 billion yuan.

Yanshan County in Wenshan, once a poverty-stricken county, saw its industrial added value grow by 67.3% in 2023 after the Weiqiao 2.03 million-ton green aluminum project was completed, transforming it into a strong industrial county.

The industry migration not only brings capacity but also upgrades the entire industrial chain.

Chongqing Changshou Economic Development Zone aligns with the city’s “33618” modern manufacturing cluster system, focusing on natural gas chemicals, silicon-based new materials, and new energy materials, showing strong development momentum.

Qianjiang District is also developing a complete industry chain from electrolytic aluminum to recycled aluminum, deep processing, and downstream applications, focusing on recycled aluminum, aluminum alloys, and auto parts, integrating into the Chongqing-Chengdu new energy vehicle industry.

From “water abandonment” to “green aluminum,” this economic shift of “north-to-south aluminum” has achieved positive returns in resource matching, industry competitiveness, and regional development.

From north to south, this massive migration of electrolytic aluminum has also helped China firmly maintain the lifeline and confidence of its key industries.

Aluminum may seem ordinary, but it is an indispensable “industrial necessity.”

It is lightweight, high-strength, conductive, corrosion-resistant, and easily recyclable—irreplaceable in modern industry.

Power grid backbone lines rely on aluminum; shortages could cause nationwide blackouts. Aircraft, high-speed trains, and new energy vehicles depend on aluminum for lightweighting. Military aircraft, missiles, ships, and armored vehicles all rely on aluminum, with structural parts, skins, and hulls directly affecting mobility, speed, and range.

Aluminum alloy rods, source: Investment Yunnan

Electrolytic aluminum is undoubtedly a strategic national resource. The common household items like doors, windows, and soda cans are just its most trivial applications.

China is the world’s largest producer and consumer of electrolytic aluminum.

In 2024, production is expected to reach about 44 million tons, over 60% of the global total, with consumption exceeding 40 million tons, nearly 57% of the world’s total—huge in scale and of strategic importance.

Recently, some industry voices have suggested relocating capacity to Indonesia, Vietnam, and Laos, attracted by local cheap resources and costs.

However, this model contains hidden risks.

Electrolytic aluminum is vital to the national economy.

Massive overseas migration could sever supply chains in tense geopolitical situations or sudden policy changes.

Domestic electrolytic aluminum consumption and distribution are shown in the chart: source: Tuha Securities Research Institute.

Therefore, maintaining a complete, controllable industrial chain is crucial.

Today, China is the only country in the world with a full aluminum industry chain—from bauxite, alumina, electrolytic aluminum to high-end aluminum products. This advantage is unmatched by the US, Europe, the Middle East, or Southeast Asia.

Keeping this strategic industry domestically, leveraging southwestern green energy for green upgrading, is an inevitable choice.

It can address global carbon barriers, enhance industry competitiveness, and ensure the independence and security of the industrial chain.

Securing electrolytic aluminum is safeguarding the foundation of China’s manufacturing.

This massive migration has effectively armored China’s manufacturing with a “strategic bulletproof vest.”

Jiangjie is a leading industry and finance media outlet, a Chinese think tank providing long-term research on urban and industrial development based on industry economics and methodology, serving government and enterprise needs.