China’s Solar Price Edge: Scale, Integration, and Oversupply
China’s low solar panel prices come from an unusually large and integrated manufacturing ecosystem that spans polysilicon, wafers, cells, modules, equipment, and logistics. The IEA estimates China holds about 85% of global solar PV supply-chain production capacity and around 95% of wafer capacity. In 2026, global manufacturing overcapacity is also pushing prices lower, after module prices fell by roughly 50% between 2023 and 2025.
China’s cost position rests on an industrial web that stretches from quartz and polysilicon through ingots, wafers, cells, and finished modules, including glass, frames, chemicals, equipment, and logistics. The IEA places China at about 85% of worldwide solar PV supply-chain production capacity and roughly 95% of wafer capacity.
Large plants spread expensive equipment and construction costs over more output, negotiate better material prices, and generate more data to improve yields and equipment use. Vertical integration helps firms coordinate upgrades and inventories and reduces reliance on outside suppliers. Between 2023 and 2025, module prices roughly halved amid excess global capacity.
Cheaper solar panels could make clean electricity more affordable for households, businesses, and utilities, potentially speeding adoption. Installers and project developers may benefit from lower input costs. At the same time, manufacturers outside China could face tighter margins and possible consolidation, affecting workers and suppliers in those regions. Governments may weigh energy-security and industrial concerns alongside climate goals.