On a recent trip to China, US Secretary of the Treasury Janet Yellen warned China directly that the US would not stand by in the face of China’s “large-scale government support” for industries such as solar power, electric vehicles (EVs) and batteries. Reminding her audience that the US steel industry had previously been decimated by Chinese subsidies, she made clear the Biden administration’s determination not to allow green industries to suffer the same fate.

China has scaled up its green industries with mind-boggling speed. It now produces nearly 80% of the world’s solar PV modules, 60% of wind turbines, and 60% of electric vehicles and batteries. In 2023 alone, its solar-power capacity grew by more than the total installed capacity in the US. These investments were driven by a variety of government policies at the national, provincial and municipal levels, allowing Chinese firms to travel rapidly along the learning curve to dominate their respective markets.

But there is a big difference between solar PV cells, electric vehicles and batteries on one hand, and older industries such as steel and gas-powered cars. Green technologies are crucial in the fight against climate change, making them a global public good. The only way we can decarbonize the planet without undermining economic growth and poverty reduction is to shift to renewables and green technologies as rapidly as possible.

The case for subsidizing green industries, as China has done, is impeccable. Beyond the usual argument that new technologies provide know-how and other positive externalities, one also must account for the immeasurable costs of climate change and the huge prospective benefits of accelerating the green transition. Moreover, because the knowledge spillovers cross national borders, China’s subsidies benefit not only consumers everywhere, but also other firms along the global supply chain.

Another powerful argument follows from second-best reasoning. If the world were organized by a social planner, there would be a global carbon tax; but, of course, there is no such thing. Although a variety of regional, national, and subnational carbon-pricing schemes do exist, only a tiny share of global emissions is subject to a price that comes close to covering the true social cost of carbon. 

Under these circumstances, green industrial policies are doubly beneficial—both to stimulate the necessary technological learning and to substitute for carbon pricing. Western commentators who trot out scare words like “excess capacity”, “subsidy wars” and “China trade shock 2.0″ have gotten things exactly backwards. A glut in renewables and green products is precisely what the climate doctor ordered.

China’s green industrial policies have been responsible for some of the most important wins to date against climate change. As Chinese producers expanded capacity and reaped the benefits of scale, the costs of renewable energy plummeted. In the space of a decade, prices fell by 80% for solar, 73% for offshore wind, 57% for onshore wind and 80% for electric batteries. 

These gains underpin the creeping optimism in climate circles that we might just be able to keep global warming within reasonable bounds. Government incentives, private investment, and learning curves proved to be a very powerful combination indeed.

With the Inflation Reduction Act, America already has its own version of China’s green industrial policies. The law provides hundreds of billions of dollars in subsidies to facilitate the transition to renewables and green industries. While some of the tax incentives do favour domestic producers over imports (or are available only with stringent sourcing requirements), these blemishes must be seen in the context of the political compromises needed to ensure the legislation’s passage. 

They may be a small price to pay for what many analysts view as a climate-policy ‘game changer.’ Countries have other interests besides the climate, of course. They can harbour legitimate concerns about the consequences of other countries’ green-industrial policies for jobs and innovative capacity at home. If they judge that these costs outweigh the climate and consumer benefits, they should be free to impose countervailing tariffs on imports, as trade rules already allow. It would be better for the world overall if they didn’t react that way, but nobody can or should stop them.

In fact, before globalization and the tightening of trade rules went into overdrive in the 1990s, it was not uncommon for countries to negotiate informal arrangements with exporters as a way to moderate import surges and keep exporters reasonably happy. Recall the Multifibre Arrangement for garments in the 1970s, and the voluntary export restrictions for automobiles and steel in the 1980s. 

While economists decried these schemes as protectionist, such arrangements did little damage to the world economy. They essentially acted as safety valves: by allowing pressure to escape, they helped keep the trade peace.What governments should not do is decry green industrial policies as norm violations or dangerous transgressions of international rules. The moral, environmental and economic arguments favour those who subsidize their green industries, not those who want to tax others’ production. ©2024/project syndicate