In September 2013, at Nazarbayev University in Astana, Kazakhstan, Chinese President Xi Jinping unveiled the Silk Road Economic Belt, the precursor to what would become China’s vast Belt and Road Initiative (BRI). Conceived as both an economic investment project and a global infrastructure strategy, the initiative placed Central Asia at its geographic and strategic heart. More than a decade later, the region remains central to Beijing’s ambitions, serving not only as a corridor for trade and investment but also as an unexpected testing ground for environmental transition.

Central Asia’s role in the Belt and Road Initiative reflects a convergence of economic opportunity and ecological necessity. For countries across the region, Chinese investment has provided capital for critical industries such as energy, mining, transportation, and infrastructure. At the same time, it has increasingly supported renewable energy projects and environmental modernization efforts. This dual role raises important questions. Does the economic growth generated by Chinese investment justify deeper economic interdependence with Beijing? Are BRI projects accelerating Central Asia’s environmental transition, or are they reinforcing older patterns of fossil fuel dependence?

Environmental transition refers to broad systemic changes that reshape economic, social, and cultural structures to create more sustainable societies. According to the Harvard Center for Astrophysics, such transitions involve shifts toward sustainable development, cleaner energy systems, and environmentally responsible economic models. In Central Asia, China’s growing investments in green technologies, renewable energy infrastructure, and sustainability-oriented development projects appear to support these goals. Yet the reality is more complex than a straightforward story of ecological progress.

Central Asia occupies a strategically important position within China’s broader BRI vision. Rich in natural resources and home to some of the world’s most significant reserves of oil, gas, and minerals, the region has become a natural destination for Chinese capital. Natural gas, in particular, plays an outsized role in the economies of several Central Asian states, making the region especially attractive to a country whose economic growth has long depended on reliable energy supplies.

China remains the largest consumer of oil and natural gas in Asia, and securing access to those resources has been a major driver of its westward economic engagement. At the same time, Beijing seeks to diversify its markets and move beyond the low-cost manufacturing model that powered its rise over previous decades. China increasingly aims to dominate value-added industries, including electric vehicles, solar technologies, battery production, and other advanced green technologies. As a result, Central Asia has become both a supplier of critical resources and a growing market for Chinese industrial and technological exports.

The strengthening relationship is reflected in trade figures. China has now become Central Asia’s largest trading partner. During the first three quarters of 2025 alone, bilateral trade between China and the five Central Asian states—Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan—reached approximately $80 billion.

Chinese investments in the region have historically focused on energy, transportation infrastructure, and metal mining, while more recent investments have expanded into technology and renewable energy. These investments are visible across all five Central Asian republics. The Belt and Road Initiative has therefore become more than a mechanism for increasing economic connectivity between post-Soviet states. It has also emerged as a vehicle through which long-standing environmental challenges may potentially be addressed.

Those environmental challenges are deeply rooted in the Soviet legacy that continues to shape the region today. During the 1970s, Soviet authorities diverted major rivers, including the Amu Darya and Syr Darya, to irrigate vast cotton-growing areas. The result was one of the world’s most infamous environmental disasters: the near destruction of the Aral Sea. As the sea receded, toxic dust from the exposed seabed was carried across Central Asia by powerful winds, contributing to elevated rates of respiratory illnesses, cancers, and other serious health problems.

The environmental consequences extended beyond water management. Soviet-era industrialization left behind extensive networks of mines, factories, and processing facilities that generated severe pollution. Open-pit mining operations and aging industrial infrastructure continue to contribute significantly to carbon emissions while producing large quantities of industrial and toxic waste. Much of the environmental degradation confronting Central Asian governments today is therefore inherited from the Soviet period, leaving policymakers with costly and complex remediation challenges.

Against this backdrop, China has increasingly promoted the idea of a “Green Belt and Road Initiative,” emphasizing sustainable development and environmentally responsible growth. Through this framework, Beijing argues that economic development and environmental progress can proceed simultaneously.

Kazakhstan and Uzbekistan provide some of the most prominent examples. Both countries have historically depended heavily on fossil fuels, yet both are increasingly investing in renewable energy as part of broader efforts to diversify their economies and reduce environmental impacts. Chinese financing and technical expertise have played a significant role in supporting these ambitions.

In Uzbekistan, Chinese firms have participated in several large-scale environmental projects. CAMC Engineering, for example, has committed approximately $350 million to constructing two waste-to-energy plants in the Andijan region.

Meanwhile, Shanghai SUS Environment has partnered with Uzbekistan’s Waste Management Agency to develop advanced waste-processing technologies capable of handling up to 1,500 tons of waste each day. These projects are intended to reduce landfill use while generating energy from municipal waste streams.

Kazakhstan has also become a major destination for Chinese renewable-energy investment. Universal Energy Co., a private Chinese green-energy company, has constructed ten renewable-energy facilities with a combined capacity of 630 megawatts. State-owned Chinese firms have likewise participated in the development of large wind-power projects in Zhanatas and Shelek, contributing to a combined generating capacity of approximately 2.6 gigawatts.

Taken together, these projects suggest that BRI-related investments can support Central Asia’s environmental transition by reducing dependence on fossil fuels, encouraging renewable-energy adoption, and facilitating more sustainable forms of economic development.

Yet these successes coexist with a significant contradiction.

Despite positioning itself as a global leader in renewable-energy technologies, China remains the world’s largest greenhouse-gas emitter. This tension is reflected in its activities across Central Asia. While Beijing promotes green development through the BRI, it simultaneously continues to invest heavily in fossil-fuel extraction, pipeline construction, and hydrocarbon infrastructure throughout the region.

Turkmenistan’s Galkynysh gas field offers a clear example. Chinese investments continue to support expanded gas production that ultimately serves Chinese energy demand. Similar patterns can be observed elsewhere across Central Asia, where fossil-fuel projects remain among the most heavily funded components of BRI cooperation.

Kazakhstan illustrates this contradiction particularly well. Although renewable-energy investments have grown, a substantial portion of Chinese investment continues to flow into fossil-fuel industries. One notable example is the approximately $530 million invested in trunk pipeline infrastructure for transporting ethane and propane in the Atyrau region.

Such investments reinforce what economists often describe as a “carbon lock-in.” Once pipelines, processing facilities, rail links, and export infrastructure are built, they create powerful incentives for continued fossil-fuel production and consumption. These assets are designed to operate for decades, making it more difficult for governments to transition rapidly toward low-carbon economic models.

The implications extend beyond emissions alone. Large-scale infrastructure projects frequently involve land-use changes, environmental disruption during construction, and long-term ecological impacts. Consequently, while renewable-energy investments contribute to environmental modernization, continued investments in fossil-fuel infrastructure may simultaneously undermine those gains.

The result is a paradox at the heart of China’s engagement with Central Asia. On one hand, Beijing’s renewable-energy expertise and growing green investments provide meaningful support for environmental transition. On the other, its continued commitment to fossil-fuel development risks deepening the region’s dependence on carbon-intensive industries.

This contradiction reflects the broader realities of the Belt and Road Initiative itself. The BRI is neither exclusively a green-development project nor solely a vehicle for fossil-fuel expansion. Rather, it serves multiple objectives simultaneously: securing energy resources, expanding trade networks, creating markets for Chinese technologies, and strengthening Beijing’s economic influence across Eurasia.

Ultimately, China’s investments in Central Asia reveal both the possibilities and limitations of environmentally oriented development under the Belt and Road Initiative. The influx of capital into renewable energy, waste management, and sustainable infrastructure has undoubtedly contributed to ecological modernization efforts. At the same time, continued investments in oil, gas, and related infrastructure risk entrenching the very carbon-intensive economic structures that environmental transition seeks to overcome.

Whether the BRI ultimately accelerates or delays Central Asia’s environmental transformation will depend on which of these competing trajectories proves more influential in the years ahead. For now, the region remains suspended between two futures: one increasingly powered by renewable energy and sustainable development, and another still deeply tied to the fossil-fuel foundations upon which much of its modern economy was built.