PJM is performing system maintenance on Tuesday, January 26, Wednesday, January 27 and Thursday, January 28 from 3:00-5:00 p.m. EPT (1500- 1700 hours). This maintenance will cause stale data to Data Miner, Data Snapshot, Data Viewer, PJM Now, LMP postings on Data Viewer, and eDataFeed. In addition, there could be stale data on the Markets and Operations page.

PJM Coronavirus (COVID-19) Information

For information and updates about PJM’s precautions in response to the coronavirus (COVID-19) pandemic, visit PJM’s Info-Connection page.

Generation Deactivations

Generator deactivations can alter power flows that may yield violations of established transmission system reliability criteria. Therefore system upgrades may be required to correct any identified reliability violation, in many areas of PJM. Visit the Learning Center site to learn about the steps PJM takes to keep the grid stable when power plants retire.

The list of deactivations is typically updated within 24 business hours of notification from the generator. If a deactivation is not shown, PJM has not been notified of the deactivation.

Byron Deactivation Sensitivity Study


Unit
Capacity (MW)
Fuel Type
State
Age
Transmission Owner Zone
Owner Notification Date
Requested Deactivation Date
Reliability Analysis
Related Upgrades & Materials
Byron Unit 1
1168
IL
35
ComEd
TBA
9.13.2021
Byron Deactivation Response Letter PDF
PJM performed a sensitivity study. While not official, the sensitivity study did not identify any reliability concerns.
Byron Unit 2
1247
IL
33
ComEd
TBA
9.13.2021
Byron Deactivation Response Letter PDF
PJM performed a sensitivity study. While not official, the sensitivity study did not identify any reliability concerns.