Air pollution from AI data centers may cause measurable health and economic impacts

Harvard researchers report that on-site fossil-fuel power at some AI data centers can raise fine particulate pollution and that case analyses estimate substantial annual health and economic damages in affected communities.

Harvard researchers and a postdoctoral analyst examined how on-site fossil fuel power at AI data centers can increase fine particulate pollution and related health and economic costs. The work builds on doctoral research linking air pollution to health outcomes using causal inference and large datasets. Case studies were developed for several facilities and have been used by communities and regulators in permitting discussions. The research also considers technical and modeling challenges in tracing emissions and estimating health effects. Key findings: - Analyses estimated large annual health damages at some sites, for example $53–$99 million for the Vantage Data Center in Loudoun County, Virginia, and tens of millions of dollars for the proposed xAI gas plant near Memphis. - Estimated impacts reported include an increase of several premature deaths per year in affected regions, alongside higher hospital admissions, asthma-related outcomes, and lost productivity. - The independent analyses have informed permitting and public processes, including a town hall in Memphis and a Planning Commission recommendation to deny a gas plant expansion in Fluvanna County. - Researchers note challenges in measuring plant operating frequency, modeling pollution dispersion, and translating exposure into health risks, and describe potential technical approaches such as routing computational load to facilities powered by renewables. Summary: The research connects on-site fossil-fuel generation at AI data centers to increased fine particulate pollution and substantial estimated health and economic damages in some communities. These analyses have been introduced into permitting and community engagement processes; further regulatory outcomes are undetermined at this time.