Impact of the xAI Data Center on Air Quality in Southwest Memphis

• In Event: A Critical Examination of Intersecting Policy, Socioeconomic, Energy, and Environmental Health Concerns About Data Centers

Abstract

The xAI Data Center (hereafter “xAI”) is one of the largest data centers in the world. It is located in Southwest Memphis, Tennessee, a low-income, African American–concentrated community that already hosts major industries. Since its launch on September 1, 2024, xAI has been powered by 15 natural gas turbines that emit large quantities of air pollutants, raising environmental concerns among the public. This study aimed to assess whether xAI operations significantly degraded air quality in nearby communities, with a focus on Boxtown (the nearest subdivision) and Riverview (an air pollution hotspot). The contributions of xAI turbines to air pollution were estimated using EPA’s AERSCREEN dispersion model. The worst-case short-term and annual concentrations of criteria and toxic air pollutants were then compared with national standards. Because the modeling results indicated concerns about PM2.5 pollution, daily 1 km-resolution aerosol optical depth (AOD) satellite data collected between Jan 2023 and May 2025 were retrieved from the MODIS MAIAC Level 2 product for Memphis. PM2.5 concentrations before and after xAI’s launch were compared using a regression discontinuity (RD) model. Short-term air monitoring was conducted to assess compliance with air standards. The air modeling showed that the resulting concentrations in nearby subdivisions remained below national standards for all pollutants except PM2.5. The daily and annual concentrations of PM2.5 were 38 and 9.4 µg/m³, exceeding standards of 35 and 9 µg/m³, respectively. The satellite data showed that the immediate PM2.5 shifts were –1.21 µg/m³ (95 % CI: –7.76 to 5.35) in Boxtown and 0.19 µg/m³ (95 % CI: –6.32 to 6.69) in Riverview, indicating no statistically significant post-cut changes in trend. The monitored concentrations of PM2.5, CO, NO2, and formaldehyde aligned with the modeled concentrations and met the corresponding standards. The operation of xAI’s gas turbines has not significantly degraded air quality in Southwest Memphis. However, high baseline PM2.5 concentrations underscore the need for broader regional pollution mitigation. Establishing sustained, community-based monitoring will be essential to ensure transparency and protect public health in vulnerable populations.

Author

• Chunrong Jia, The University of Memphis
  Presenting Author