DEP Invites Comments On Significant Modification To Title V Air Quality Permit For Constellation Energy Eddystone Natural Gas Power Plant In Delaware County

The Department of Environmental Protection published notice in the June 27 PA Bulletin inviting comments on a significant modification to the Title V Air Quality Permit for the Constellation Energy Eddystone Natural Gas Power Plant in Eddystone Borough, Delaware County.  (PA Bulletin, page 3761)

The Eddystone Power Plant is a peaking plant being kept open beyond its closure date by order of the US Department of Energy.  Read more here.

The facility is requesting to add an area source hazardous air pollutant (HAP) emission restriction to be an area source of HAPS (restricting HAP emissions below 10 tpy (individual) and 25 tpy (combined)). 

The facility will no longer be subject to Federal regulations under 40 CFR 63 Subpart DDDDD. The permit will contain emissions limits for the boilers and turbines limiting NOx, CO, SOx, VOC, PM, HCl and Hg emissions.

DEP is accepting comments until July 27-- 30 days after this notice.

No hearing has been scheduled but one may be requested.

Comments should be directed to DEP Southeast Regional Office, 2 East Main Street, Norristown, PA 18401 or by email to: RA-EPSEROAQPUBCOM@pa.gov. 

Requests to review the permit application in-person should be sent to the File Review Coordinator by email to: RA-EPSEROAQPUBCOM@pa.gov. 

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[Posted: June 26, 2026]  PA Environment Digest