arstechnica.com 13 days ago URGENCY: 6/10
Coal Pollution Slashes Solar Power Output
A new study reveals that coal pollution significantly reduces solar power production. Discover how aerosols from coal burning are costing us hundreds of terawatts annually.

The Hidden Costs of Coal Pollution
Coal is notorious for being the most polluting fuel, emitting high levels of carbon and toxic metals. Recent research indicates that coal-derived aerosols not only harm health but also drastically reduce solar energy production, with estimates showing a loss of over 500 terawatt-hours in 2023 alone.
The study, conducted by a UK research team, utilized AI-analyzed satellite imagery to assess solar facilities globally. Key findings include:
- Over 25% of potential solar power was lost in 2023.
- 20% of this loss was due to cloud cover, while 6% was attributed to aerosols.
- Sulfur dioxide aerosols from coal burning account for nearly half of the total aerosol impact.