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On March 19, 2026, a new paper released by the Grantham Research Institute on Climate Change and the Environment argues that China’s politics are the real engine behind its green industrial supremacy. The paper does not frame China’s clean-tech rise as a simple subsidy story. Instead, it connects the country’s political structure to a distinctive growth model, and that model to a string of manufacturing victories in solar, batteries, and electric vehicles.
For years, analysts have searched for a single explanation for China’s rapid build-out of clean-energy industries. Some point to central planning, others to local government subsidies, still others to aggressive export pricing. The Grantham paper folds those factors into a broader insight: Chinese politics shape how capital, competition, and policy signals move through the system.
In that model, the central government sets strategic priorities, but regional governments compete fiercely to exceed targets. State-linked financial institutions follow the policy direction, providing low-cost capital to selected sectors. Meanwhile, firms are pushed into high-volume production, rapid cost reduction, and export expansion. The result is not merely an industrial policy, but a politically embedded growth machine that can mobilise resources faster than market-driven economies usually can.
That machine matters because clean-tech industries reward scale. Solar panels, batteries, and EV components are all manufacturing sectors where learning curves and economies of scale translate directly into lower prices. China’s growth model has proven unusually good at moving down those curves quickly, which is one reason the country came to dominate global supply chains in such a short time.
The paper’s central contribution is to show how China’s politics determine its growth model, and how that model then fosters clean-tech development. That distinction matters for policy debates in the United States, Europe, and elsewhere. If China’s advantage were only the result of subsidies, then countervailing tariffs and subsidy-matching programs might be sufficient responses. But if the advantage comes from a deep political and institutional model, then trade measures alone are unlikely to rebalance the global market.
The paper illustrates the point with the trajectory of China’s clean-energy industries over the past two decades. Early government support created the initial market, but it was scale-seeking local suppliers, anxious to win government attentions and export orders, who drove the sharp drops in cost. Once that momentum started, it became self-reinforcing. Chinese producers sold more, earned more, reinvested more, and built new manufacturing capacity that further lowered unit costs.
This also explains why China does not always choose the most efficient or the most technologically pristine pathway. Instead, the system tends to converge on politically supported industries with clear industrial-policy priority. Clean technology became one of those priorities because it aligned with energy security, environmental legitimacy, and technological upgrading. The Grantham paper treats that convergence as a political outcome rather than a purely economic one.
One of the most valuable points in the paper is its refusal to treat subsidies as China’s only tool. In fact, many observers have noted that China’s most successful clean-tech sectors have survived cycles of subsidy cuts. Solar manufacturing, for example, faced a major shakeout in the late 2010s when Beijing reduced feed-in tariffs and forced consolidation. The firms that emerged were not the most protected companies; they were the most efficient scale players.
That pattern resembles China’s earlier experience in high-speed rail, telecom equipment, and even consumer electronics. The state defines a strategic direction, creates a controlled competitive environment, and then lets domestic market dynamics separate winners and losers. The Grantham paper links that pattern to China’s broader political economy. It is an important corrective to the idea that China simply spends its way to industrial leadership.
This deeper structure also explains why Chinese clean-tech firms have been so resilient in the face of foreign restrictions. When tariffs are raised, Chinese companies do not wait passively for a policy fix. They often move operations to third-country locations, shift product categories, or absorb temporarily lower margins in order to maintain market share. That strategic flexibility comes from the same growth model that created their scale advantages.
The paper arrives at an intersection of climate policy and economic security debates. Western governments have spent years trying to create local clean-tech champions through tax credits, procurement rules, and direct subsidies. The Inflation Reduction Act in the United States and the Net-Zero Industry Act in Europe are the most prominent examples. Yet the Grantham paper suggests that these programmes will face a difficult challenge: competing with a whole political-economic model, not simply with a set of subsidies.
That is not to say China is unbeatable. The paper’s argument also implies that China’s growth model has vulnerabilities. It depends heavily on public investment and political alignment. It can produce overcapacity, as seen in several solar and battery segments. It can distort prices in ways that trigger international retaliation. And it relies on exporting enough output to maintain full-capacity production. When overseas markets close or demand slows, the model faces pressure.
Still, the immediate implications are clear. The race for clean-tech leadership in 2026 and beyond is not merely a race for better hardware. It is also a contest between different ways of organising capital, incentives, and government priorities. The Grantham paper gives climate economists and policymakers a useful framework for understanding why China remains the dominant force in clean-energy manufacturing.
As the paper notes, China’s growth model is not a neutral machine that happens to produce clean technology. It is a politically sustained system in which the state continually reshapes market conditions in favour of strategic industries. That system has made China the world’s largest producer of solar modules, batteries, and electric vehicles. It has also made Chinese clean-tech firms deeply embedded in global supply chains, from raw materials and refining to final assembly.
For international observers, the paper offers a caution: the West’s green industrial strategies should be judged not only by their spending levels, but by whether they can generate the same kind of politically stable, long-horizon investment signals that China’s model delivers. The clean-tech transition is now as much about political economy as about emissions targets.
The Grantham Research Institute’s contribution here is to move the debate beyond the usual figures on installed capacity or export volumes. By focusing on the political origins of China’s growth model, the paper gives readers a clearer answer to a persistent question: why did China, rather than Germany, Japan, or the United States, emerge as the anchor of green manufacturing? Because its politics are arranged in a way that makes the rapid scaling of strategic clean-tech industries almost inevitable.
As policymakers continue to design carbon border measures, local-content rules, and green procurement standards, the paper’s political-economy lens will be an essential starting point. Understanding China’s clean-tech presence is impossible without understanding the political forces behind its growth model.
