Chinese solar-cell manufacturer headquartered in Chengdu, south-western China. The company was originally a fish-food producer before pivoting to solar in the 2000s. It provided the solar cells for one in seven of the solar panels sold worldwide in 2024. Its Chengdu factory, operated almost entirely by robots, can produce enough photovoltaic cells in a week to build a power plant with a capacity of more than 500 megawatts; two months of output produces more electricity over the course of a year than a large nuclear reactor.
Tongwei is one of China's four biggest solar producers, alongside LONGi Green Energy Technology, Jinko Solar and Trina Solar. By 2026 all four were trading well below half their share-price peaks, hit by brutal industry-wide overcapacity and price wars; most Chinese solar firms have run at a loss since 2024.
The best defense against logic is ignorance.