UPDATE: PJM Issues Cold Weather Alert, Conservative Ops for Feb. 3–4


PJM on Wednesday issued a Cold Weather Alert and declared Conservative Operations throughout the PJM footprint for Feb. 3–4 in anticipation of frigid temperatures.

With the Cold Weather Alert and a preceding Cold Weather Advisory issued Jan. 31, PJM and members prepare for possible severe conditions.

A Cold Weather Alert prepares personnel and facilities for expected extreme cold weather conditions when actual temperatures fall near or below 10 degrees Fahrenheit. Temperatures are expected to fall to the single digits Friday and Saturday throughout the region PJM serves.

Transmission and generation owners must take extra care to maintain equipment so that it does not freeze. This preparation includes:

  • Implementing physical protection against the cold, including wind breaks or shelters around equipment, temporary heaters and other actions
  • Notifying PJM of any changes caused by cold weather to availability of generation, fuel inventories, fuel switching capability or other constraints

During a Cold Weather Alert, PJM may also cancel or postpone planned maintenance outages in order to ensure availability of sufficient resources.

Conservative Operations can be declared when all or part of PJM’s footprint is undergoing, or has the potential to face, adverse impacts from a variety of circumstances or combination of circumstances, including weather, environmental, physical or cyber security events. The declaration of Conservative Operations may include additional reliability actions, including:

  • Recalling/canceling noncritical maintenance outages
  • Reducing transfers of power into, across or through the PJM system
  • Increasing reserves
  • Making additional requests to transmission owners and/or generation owners