2020 Path 26 Counting Constraint for Resource Adequacy Purpose
All scheduling coordinators for load serving entities serving load within the California ISO Balancing Authority Area must submit a Contract Data Template for Allocating Transmission Capacity on Path 26 by June 19, 2019, for the ISO to implement the Path 26 counting constraint consistent with California Public Utility Commission Decision (D.)07-06-029.
In Decision D.07-06-029, the California Public Utility Commission (CPUC) adopted the Path 26 counting constraint as part of the resource adequacy (RA) program requirements applicable to load serving entities (LSEs) under the CPUC’s jurisdiction. The Path 26 counting constraint accounts for the limited transmission transfer capability across Path 26 and relies on information regarding existing contracts for its implementation, similar to the import capability allocation process.
The ISO requires information from all scheduling coordinators (SCs) for LSEs serving load within the ISO Balancing Authority by June 19, 2019, to implement the Path 26 counting constraint consistent with the CPUC RA program’s anticipated timelines. The counting constraint only applies to CPUC-jurisdictional LSEs because the Path 26 counting constraint has not been incorporated into the ISO tariff. The CPUC is in the process of reviewing the need for continuing the Path 26 counting constraint starting with the 2020 RA process. If CPUC makes a determination to terminate the Path 26 counting constraint the ISO will not be using this data and will not send out Path 26 allocations to the any load serving entity.