According to the report, China’s share in making polysilicon, wafers, solar cells and solar panels were, in order, 94%, 96%, 90% and 81%. Polysilicon is the key base material for the solar PV supply chain, while wafers (thin slices of semiconductors) are used to make integrated circuits in solar cells.
In addition, even though Chinese PV solar cell manufacturers preferred to import turn-key technology from abroad, the development of technological competence also played an important role in the rise of the Chinese PV industry, and this is reflected particularly in the rise of Chinese manufacturing of PV machinery for c-Si solar cells.
Further, in 2011, a group of US solar PV manufacturers, the Coalition for American Solar Manufacturing (CASM) filed a trade case against Chinese PV producers for dumping products subsidized by the Chinese government into the US market.
China's photovoltaic industry began by making panels for satellites, and transitioned to the manufacture of domestic panels in the late 1990s. After substantial government incentives were introduced in 2011, China's solar power market grew dramatically: the country became the world's leading installer of photovoltaics in 2013.
This allows the shipments to avoid trade barriers, like tariffs imposed on many Chinese imports by President Donald J. Trump. Several of China’s biggest solar panel manufacturers are building final assembly plants in the United States to tap subsidies offered as part of the Inflation Reduction Act.
Regarding the installation, China is striving to lead that as well. The Renewable Energy Agency's updated report shows that solar PV installation increased from 72 GW in 2011 to more than 1 TW by the end of 2022 (IRENA, 2022b). China's share in production increased from 60 % in 2010 to almost 80 % in 2021.