China’s Hydrogen Boom Could Cut Emissions 72 Percent by 2060, Study Finds

Hydrogen has long been billed as the Swiss army knife of the energy transition, a molecule that can decarbonize everything from steel mills to cargo ships. But a sweeping new analysis of China’s hydrogen system suggests that the molecule’s climate promise depends on a delicate choreography between supply and demand, one that could either deliver a dramatic emissions cut or lock in decades of carbon-intensive production. The study, published in the Journal of Industrial Ecology, offers the most integrated picture yet of how China’s hydrogen economy might evolve through 2060, and its findings carry weight far beyond China’s borders.

A team of researchers led by Maximilian Arras of Tsinghua University, working with colleagues at Tsinghua’s Laboratory for Low Carbon Energy and RWTH Aachen University, constructed a hybrid analytical framework that fuses two powerful modeling traditions. The first is input-output analysis, an economic technique that traces monetary flows between every sector of an economy, revealing how demand in one industry ripples through supply chains and generates emissions elsewhere. The second is the logarithmic mean Divisia index, or LMDI, a decomposition method that mathematically dissects changes in emissions into their underlying drivers, such as shifts in activity levels, technology mix, and energy intensity.

The innovation lies in combining physical and monetary flow analysis into a single coherent accounting system. Most hydrogen studies examine either the techno-economics of production routes or the macroeconomics of demand growth, rarely both at once. By linking the two, the researchers could trace carbon emissions across the entire hydrogen supply chain, from the electricity that powers electrolyzers to the factories that consume the resulting molecule, while simultaneously capturing how economic growth, structural change, and technology substitution interact across what the authors call the resource-environment-economy nexus.

The headline numbers are striking. The model projects that China’s hydrogen demand will quadruple over four decades, rising from 33.0 million tonnes in 2020 to 140.9 million tonnes by 2060. That growth is not driven by the fuel-cell passenger cars that once dominated hydrogen headlines, but by the unglamorous workhorses of the industrial economy: chemical production, oil refining, iron and steel making, heavy transport, and utilities. As sectors that are notoriously hard to electrify turn to hydrogen as both a feedstock and a fuel, the demand curve steepens dramatically in the second half of the period.

On the supply side, the study anticipates a fundamental technology shift. Today, most of China’s hydrogen comes from coal gasification and steam methane reforming, routes that carry a heavy carbon footprint and have earned the nickname grey hydrogen. The model projects that water electrolysis, powered increasingly by renewable electricity, will become the dominant production route by mid-century. This substitution is the linchpin of the entire decarbonization scenario, because the climate value of hydrogen is determined almost entirely by how it is made.

Even so, the transition is not instantaneous. Direct carbon emissions from China’s hydrogen system are projected to peak at 625.3 million tonnes of carbon dioxide in 2030, a sobering reminder that the buildout of hydrogen infrastructure will initially add to the nation’s carbon burden before subtracting from it. Only after that peak do emissions begin their long descent, falling to 175.1 million tonnes by 2060. That represents a 72.1 percent reduction from the peak, achieved through the twin levers of technology substitution and the integration of renewable power into electrolysis.

The decomposition analysis yields perhaps the study’s most policy-relevant insight: hydrogen-based technologies can contribute 46.7 percent of total emissions mitigation in hard-to-abate sectors. These are the corners of the economy, steel, cement, chemicals, long-haul freight, where direct electrification faces fundamental physical barriers, whether because processes require extremely high temperatures, carbon as a chemical reducing agent, or energy densities that batteries cannot match. For these sectors, the study suggests, hydrogen is not merely one option among many but the centerpiece of any credible decarbonization pathway.

The researchers stress-tested their conclusions through scenario and sensitivity analyses, varying assumptions about hydrogen demand growth and economic structure. The robustness of the results across these alternatives matters, because long-range energy projections are notoriously sensitive to initial conditions. A model that produces a 72 percent emissions cut only under one narrow set of assumptions would be a curiosity; one that produces similar results across a range of plausible futures is a genuine guide for policy. The finding that the emissions peak occurs around 2030 also aligns with China’s stated goal of peaking national carbon emissions before the end of the decade, suggesting hydrogen policy and climate targets could reinforce one another.

The study arrives at a moment when hydrogen strategies worldwide are being recalibrated. Early enthusiasm for a hydrogen-everything future has given way to a more sober assessment, with analysts distinguishing carefully between applications where hydrogen is indispensable and those where electrification is cheaper and more efficient. Recent research has also highlighted complications the Chinese study does not center, including the climate impact of hydrogen leakage, since hydrogen itself acts as an indirect greenhouse gas, and the geospatial variation in the carbon intensity of production, which complicates certification schemes and subsidy design. The Tsinghua framework, by tracing emissions across the full supply chain in physical terms, is well suited to incorporating such refinements in future work.

For policymakers, the message is that supply-side optimization alone will not suffice. The study’s integrated approach demonstrates that aligning the pace of clean hydrogen production with the growth of demand in industrial sectors, transport, and utilities is essential; building electrolyzers faster than renewable capacity, or stoking demand before clean supply exists, risks extending the life of grey production. As the world’s largest hydrogen producer and emitter, China’s trajectory will shape global markets for electrolyzers, renewable power, and low-carbon industrial goods. If the quadrupling of demand described in this study unfolds alongside the projected 72 percent emissions decline, it would stand as one of the clearest demonstrations that a major economy can scale a new energy carrier while shrinking its carbon footprint, a proof of concept the rest of the world cannot afford to ignore.

Subject of Research: Integrated analysis of China's hydrogen system across resource, environmental, and economic dimensions

Article Title: Integrated hydrogen system analysis across the resource-environment-economy nexus: a case study of China

Article References: Arras, M., Liang, A. Y., Fu, Y., Li, Z., & Ma, L. (2026). Integrated hydrogen system analysis across the resource-environment-economy nexus: a case study of China. Journal of Industrial Ecology, 30(4), 1727-1742. https://doi.org/10.1007/s44498-026-00117-w

Image Credits: AI Generated

DOI: 10.1007/s44498-026-00117-w

Keywords: hydrogen economy, China, carbon emissions, electrolysis, input-output analysis, LMDI decomposition, hard-to-abate sectors, renewable energy, decarbonization, carbon neutrality, industrial ecology, energy transition