The 1,711 MW Conemaugh Generating Station is located in West Wheatfield Township, Indiana County and the 1,711 MW Keystone Generating Station is located in Plumcreek Township, Armstrong County and Armstrong Township, Indiana County.
The Keystone-Conemaugh Projects, LLC had previously notified DEP they would permanently cease coal combustion at the Conemaugh Station and the Keystone Station in 2028, however, KeyCon said PJM has expressed concerns regarding the facilities retiring due to an “unprecedented increase in electricity demand.”
KeyCon is now evaluating options to transition both facilities from a cessation pathway to a compliance pathway, according to EPA.
Recently, Keystone-Conemaugh Projects, LLC notified DEP it intended to convert to the voluntary incentives program for the flue gas desulfurization water and generally applicable bottom ash transport water limitations.
The proposed Consent Decree provides a schedule for Keystone-Conemaugh Projects, LLC to install and begin operating bottom ash system upgrades at both Conemaugh Station and Keystone Station to meet Federal requirements for bottom ash transport water discharges.
A copy of the proposed Consent Decree is available for review by contacting DEP’s Northwest Regional Office Clean Water Program at 230 Chestnut Street in Meadville, PA 16335 or by calling 814-332-6942 or sending email to: RA-EPNPDES_NWRO@pa.gov.
No hearing has been scheduled on the proposed Consent Decree, but one may be requested.
Comments are due February 9-- 30 days after the notice.
Comments should be sent to: DEP’s Northwest Regional Office Clean Water Program at 230 Chestnut Street in Meadville, PA 16335 or by email to: RA-EPNPDES_NWRO@pa.gov.
After the close of the public comment period, the Department will evaluate and file responses to the comments received, and then ask the Indiana Court of Common Pleas to take appropriate action regarding the proposed Consent Decree.
Background
On December 1, 2025, representatives of the US Environmental Protection Agency met with representatives of Keystone-Conemaugh Projects, LLC to review the status of the facilities and waste and wastewater handling plans.
Click Here for a copy of an EPA memo summarizing the meeting with additional details about what is being proposed for plant operations.
For more information on environmental programs in Pennsylvania, visit DEP’s website. Submit Environmental Complaints; Click Here to sign up for DEP’s newsletter; sign up for DEP’s eNotice; Like DEP on Facebook, Follow DEP on Twitter and visit DEP’s YouTube Channel.
[Posted: January 9, 2026] PA Environment Digest
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