A recent study reveals coal pollution significantly reduces solar power production globally, with China experiencing a 7.7% decrease in solar output due to aerosol particles. Sulfur dioxide from coal burning accounts for nearly half of these aerosols, while carbon-rich material from fossil fuels contributes another 18%. The pollution impact directly mirrors coal power capacity distribution.

The problem affects regions differently than expected. In China, aerosols offset 30-50% of the country's annual solar growth, while the US sees only 3% losses. This disparity stems from regional placement - US solar farms concentrate in the southwest and west, away from coal plants in the east and northeast. The spatial distribution of photovoltaic losses in China directly correlates with coal-fired power capacity.

China has begun addressing this issue by upgrading to more efficient coal plants and retiring polluting facilities. The data shows recent improvements, with aerosol impact declining. The unique situation where coal actively undermines its primary competitor provides additional impetus for faster transition away from fossil fuels, as enhanced solar productivity partially offsets lost coal production.