The California ISO Full Network Model (FNM) maintenance and update process occurs on a periodic basis. The time variability of the update process underscores the necessity and requirement for market participants to provide full and complete data and information well in advance of the time that the participant expects their new or modified facilities to connect or disconnect from the ISO grid.
To inform participants of the FNM releases planned for the 2021 calendar year and to assist with timely provision of materials required for inclusion in the model, the ISO has posted schedules with critical milestones and Master File data freeze dates to the RC West Portal (access required), ISO website, and Western EIM website. The schedule applicable for each location is available at:
