Emergency Generator Permitting by State

This matrix provides a state-level overview of permitting options for emergency generators, as determined by state or local air quality regulations and the regulatory agency with jurisdiction over the facility where the generator is located.

Permitting requirements and pathways vary by state and, in some cases, by local jurisdiction. Facilities are responsible for evaluating which permitting option is most appropriate based on generator type, usage, capacity, and regulatory applicability.

In addition to state permitting requirements, facilities operating emergency generators must also comply with applicable federal air quality regulations, including:

• New Source Performance Standards (NSPS) under 40 CFR Part 60, Subpart IIII or Subpart JJJJ
• National Emissions Standards for Hazardous Air Pollutants (NESHAP) under 40 CFR Part 63, Subpart ZZZZ

This matrix includes only state-level permitting information. Local or regional environmental regulatory agencies may impose additional permitting, registration, or operational requirements that are not reflected here.

The information provided is intended for informational purposes only. Due to the summary nature of this matrix, it may not capture all regulatory nuances, exemptions, or enforcement considerations. Facilities should consult the applicable regulations directly and/or seek legal or regulatory guidance when evaluating compliance obligations.