Lawmakers Press EPA to Monitor Data Center Diesel Generator Emissions

Senator Raphael Warnock and Representative Hank Johnson have urged the Environmental Protection Agency (EPA) to better monitor and regulate diesel-powered generators used as emergency backup power at data centers. In a letter to the agency, they argued that large facilities can house hundreds of generators and that the sector has expanded with “virtually no federal oversight or monitoring.” The lawmakers framed the issue as a public-health and air-quality concern as data center construction grows across the country. Their request seeks agency attention and a briefing; it does not itself establish a new emissions rule or impose new requirements on operators.

The lawmakers cited the scale and potential output of the equipment as reasons for closer scrutiny. According to the source, each generator at the referenced facilities can power approximately 2,000 homes and produce about 50 pounds of harmful pollutants per hour. The letter also raises the possibility that a severe storm or widespread power outage could bring multiple generators online at once, increasing emissions when backup systems operate simultaneously. The lawmakers said diesel emissions have been linked to asthma, bronchitis, and other lung diseases, and warned that pollution from a single data center could reach communities more than six miles away.

Georgia is a particular focus in the lawmakers’ account. The state is described as the nation’s fourth-largest data center hub, with more than 270 facilities. Plans for a site in Fayetteville call for nearly 230 diesel generators, while developers at a similar Covington facility plan to install 321 generators with comparable specifications. Warnock had earlier called for a statewide moratorium on data center construction in Georgia after visiting OpenAI’s proposed data center site and meeting residents in Effingham County. That advocacy provides context for the EPA request, but the source does not say that OpenAI is the operator of the Fayetteville or Covington sites.

For federal contractors and project teams, the immediate procurement signal is regulatory uncertainty rather than a new solicitation or compliance mandate. Data center developers and operators can review how generator inventories, operating scenarios, emissions controls, and monitoring plans are addressed in project design and permitting, while avoiding assumptions that new EPA requirements are already in force. Suppliers of backup-power equipment, emissions-control technologies, monitoring systems, and environmental consulting may see changing requirements or demand if the agency takes further action. The source states that the lawmakers requested an EPA briefing by November 19, 2026; stakeholders can track whether the agency responds and whether that response identifies any formal regulatory or oversight steps.

• Warnock and Johnson pressed the EPA to monitor and regulate diesel generators used for data center backup power; their request is not itself a regulation.
• The lawmakers cited facilities with hundreds of generators and asserted that oversight and monitoring have been limited.
• Each generator described in the source can power approximately 2,000 homes and produce approximately 50 pounds of harmful pollutants per hour.
• The source identifies potential health concerns including asthma, bronchitis, and other lung diseases, and describes the risk of simultaneous generator operation during storms or widespread outages.
• Georgia is identified as the nation’s fourth-largest data center hub, with more than 270 facilities statewide.
• Planned installations cited include nearly 230 generators in Fayetteville and 321 in Covington; the source says pollution from one site’s generators can reach communities more than six miles away.
• Warnock previously called for a statewide moratorium on Georgia data center construction after visiting OpenAI’s proposed site and meeting concerned residents in Effingham County.
• Developers and operators can assess generator emissions, monitoring, controls, and permitting considerations, but should distinguish planning from requirements actually imposed by EPA.
• Contractors providing backup power, emissions controls, emissions monitoring, or environmental services should watch for follow-on EPA action that could affect technical specifications and demand.
• The lawmakers requested an EPA briefing by November 19, 2026, a near-term milestone for tracking the agency’s response.