China’s vast development of renewable energy and infrastructure is more than just an engineering feat. It is the foundation for the age of artificial intelligence. From solar farms to high-speed rail and 5G networks, these investments provide the power and connectivity needed to operate AI at scale. The impact of these advancements is reflected by a variety of S&P DJI China benchmarks, which, through the inclusion of different share classes, offer distinct perspectives into the country’s capital markets. For example, the S&P China 500 and its subset, the S&P China 50 Index, provide a comprehensive view across listings, while the S&P China A 300 Index and S&P China A 50 offer a domestic perspective.

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Energy as the AI Backbone

AI is energy-intensive, and China, the world’s largest electricity producer since 2011, has rapidly expanded renewables, lifting their share from 28% in 2021 to 36% today.¹ In the first half of 2025, China added nearly 250 gigawatts of solar and wind energy, raising its total solar capacity above 1 terawatt, which accounts for over half of the global capacity.²

Despite its dominance, China is often underweighted in global benchmarks. In the S&P Global Clean Energy Transition Index, China accounts for approximately 13% of the index weight but 32% of the constituents. Structural factors such as state ownership, lower valuations and historical access constraints result in global benchmarks that understate China’s role. Interestingly, much of the index’s clean energy coverage (54%) falls under the GICS^® Utilities sector, including electric and renewable power producers.³

In contrast, domestic benchmarks such as the S&P China 500 Energy Index and the S&P China 500 Utilities Index provide pure China coverage, measuring firms central to clean energy generation, transmission and distribution.

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Infrastructure at Scale

Power alone cannot enable AI without logistics and networks. China operates 48,000 kilometers of high-speed rail (approximately 70% of global mileage),⁴ 7 of the 10 busiest ports⁵ and is the global leader in shipbuilding.⁶ Digital infrastructure has expanded even faster—with 4.4 million 5G base stations and more than 1 billion subscribers, China accounts for approximately 60% of global 5G coverage.^7, 8

These achievements are measured by the S&P Asia Infrastructure Index, which tracks leading regional infrastructure companies, with China accounting for approximately 21% of the index weight and one-third of its constituents.

Convergence in Markets

China’s “New Infrastructure” strategy integrates ultra-high-voltage grids, AI computing centers, 5G and smart transport, aligning energy and infrastructure directly with AI. This buildout is accompanied by scientific depth: in 2024 China spent CYN 3.6 trillion (approximately USD 500 billion) on R&D across science and technology, now ranking second globally. It leads in number of academic AI publications, AI patents and STEM PhDs, while the U.S. still leads in top generative AI models. The gap, however, is closing.^9, 10

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Over the past 12 months, broad-based strength has been visible across China’s sectors, with Information Technology (up 105.1%) benefiting from AI investment, Industrials (up 43.8%) supporting infrastructure buildout and Energy (up 13.9%) providing the foundation. Together, these results demonstrate how China’s strategic priorities are reflected in its markets.

Conclusion

As artificial intelligence becomes a defining theme of the next decade, China’s advances across energy, infrastructure and research provide a unique foundation for growth. This transformation is already visible in the capital markets, with S&P DJI’s China benchmarks offering complementary lenses that measure different aspects of the shift—whether broad, domestic or sector specific.

¹ https://www.iea.org/energy-system/renewables

² https://climateactiontracker.org/countries/china/policies-action/

³ Source: S&P Dow Jones Indices LLC. Data as of Sept. 12, 2025

⁴ https://www.scmp.com/economy/china-economy/article/3319006/china-vows-high-speed-rail-upgrade-after-years-record-breaking-expansion

⁵ https://www.ship-technology.com/features/the-top-10-busiest-container-ports-in-the-world/

⁶ https://www.csis.org/analysis/china-dominates-shipbuilding-industry

⁷ https://www.rcrwireless.com/20250428/5g/china-reaches-4-5g

⁸ https://www.mordorintelligence.com/industry-reports/5g-base-station-market

⁹ https://www.globaltimes.cn/page/202501/1327442.shtml

¹⁰ https://hai.stanford.edu/ai-index/2025-ai-index-report

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