The purpose of the PJM Transmission Owner/Transmission Operator (TO/TOP) Matrix is to clearly delineate the tasks that PJM is responsible for but are shared with or assigned to the Transmission Owners (TOs) by PJM. These reliability tasks include the implementation of directives and/or operating instructions issued by PJM as the Transmission Operator (TOP). The reliability tasks also include adherence to processes defined in the PJM Manuals, the PJM Operating Agreement, the PJM Consolidated Transmission Owners Agreement and the PJM Reliability Assurance Agreement.
The document that memorializes this agreement is referred to as the TO/TOP Matrix. Links to the more recent versions can be found below.
Early versions of the matrix were written and maintained by the Compliance staff at PJM. Today, the construction of the matrix is a collaborative effort between PJM and the TOs. This work is performed by the TO/TOP Matrix Subcommittee under PJM’s Transmission Owners Agreement-Administrative Committee (TOA-AC).
In order to ensure compliance, PJM conducts regular audits of its TOs to review their evidence that they are meeting their assigned task in the matrix. The guidelines for conducting these audits can be found in the
PJM TO/TOP Reliability Audit Program PDF. This document describes and defines the process that PJM will use to conduct PJM TO/TOP reliability audits. The procedure is designed to validate the PJM member TO’s performance of assigned or shared tasks identified in the PJM TO/TOP Matrix that evaluates a member TO’s ability to comply with the applicable reliability standards and PJM-specific TOP requirements. ReliabilityFirst staff will perform one TO/TOP reliability audit each year from among the TOs scheduled for audit that year. ReliabilityFirst staff will also attend one of the PJM TO/TOP reliability audits to observe the conduct of the audit.