When the U.S. Department of Energy released its Solar Futures Study in September 2021, the report projected that solar power could supply 40% of American electricity by 2035. But the study also acknowledged a critical vulnerability: the nation’s ability to meet that goal depends almost entirely on imports.
Two years later, the raw data on global clean-energy manufacturing make clear just how steep the challenge of reducing that dependence will be.
An Overwhelming Lead in Solar and Battery Production
According to the International Energy Agency, China produced 80% of the world’s solar panels in 2022. That year, the country’s total manufacturing capacity for solar cells reached 450 gigawatts — a figure that dwarfs the combined production capabilities of virtually every other nation.
China’s dominance extends beyond solar: BloombergNEF data show the country held 70% of global lithium-ion battery production capacity in the same period. Two companies anchor these sectors. LONGi Green Energy, founded in 2000 and based in the inland city of Xi’an, is the world’s largest solar panel manufacturer. Contemporary Amperex Technology Co. Limited, known as CATL and founded in 2011 in the coastal city of Ningde, is the largest battery maker globally, commanding a 34% market share in 2022.
Together, they illustrate the geographic and industrial breadth of China’s clean-energy manufacturing base. China’s 14th Five-Year Plan, covering 2021 to 2025, sets a target of 1,200 gigawatts of combined wind and solar capacity by 2030 — more than double the 534 GW installed as of 2020.
In 2022 alone, the country added 87.4 GW of new solar capacity, a record annual figure for any nation. That single-year addition is roughly equivalent to the entire electricity generation capacity of a medium-sized European country.
Policy Responses and the Scale of the Gap
This concentration of production capacity has not gone unnoticed in Washington. In June 2022, the U.S. administration invoked the Defense Production Act to boost domestic solar manufacturing, a move that underscored the strategic vulnerability created by near-total dependence on Chinese supply chains. The policy aims to accelerate production of solar panels and related components inside the United States.
Yet the numbers underscore the difficulty of rapid catch-up. China’s 450 GW of solar cell manufacturing capacity in 2022 is not merely a lead; it is a position from which the country can supply the vast majority of global demand while continuing to expand its own domestic installations at a record pace.
The U.S. Solar Futures Study provides a roadmap, but as policymakers have acknowledged, roadmaps are not factories. The gap between ambition and industrial reality remains vast, and China’s head start in both solar panel and battery production gives it a structural advantage that policy alone may struggle to close. China’s manufacturing dominance was not accidental.
After an early focus on satellite components in the late 1990s, the country began producing solar panels for domestic use. Substantial government incentives introduced around 2011 accelerated the industry’s growth.
Over time, China built an enormous production base for solar cells, batteries, and other clean-energy technologies. That capacity now far exceeds what any other country can match, creating a global reliance on Chinese supply chains for renewable energy components.
Background and What to Watch
China is a vast country in East Asia, home to more people than any nation except India. Its economy is the second largest on the planet, accounting for roughly a fifth of total global output. After decades of centralized policies that led to widespread famine and stagnation, leaders launched market reforms in the late 1970s known as the reform and opening up.
That shift unleashed decades of explosive economic growth and transformed China into the world’s largest manufacturer. Today, it holds a permanent seat on the United Nations Security Council, fields a large military, and possesses a nuclear arsenal.
For many nations, including the United States, ambitious targets for expanding solar power and electric vehicles depend on hardware that is overwhelmingly made in China. Concerns about supply chain security and geopolitical risk have prompted policymakers in Washington and elsewhere to try to boost domestic production. The sheer scale of China’s existing infrastructure, however, means that reshoring will take years and require massive investment.
The key question going forward is whether other major economies can build meaningful domestic solar manufacturing capacity before the end of the decade. China’s 2030 target of 1,200 GW of wind and solar capacity is ambitious, but given the country’s track record of over-delivering on energy targets, it would be unwise to bet against it being met or exceeded.
For consumers and businesses, this means the price and availability of solar panels, batteries, and the products that rely on them will continue to be shaped by decisions made in Beijing and by companies headquartered in Chinese cities such as Xi’an and Ningde.
