The California ISO has posted new proposed revision requests (PRRs) reflecting edits to Business Practice Manuals (BPM). Revised BPMs that have completed the BPM change management process are posted in the BPM Library. All PRRs and related activity are publicly available through the BPM change management site.

BPM PRR updates are part of the ISO Daily Briefing in addition to being listed in the “Announcement” sections of the BPM change management tool. These updates include PRRs that have become available for review, upcoming BPM meetings, and comment due dates. All registered BPM users should continue to reference the BPM Change Management tool to see current PRR status. Click here to sign up for the Daily Briefing.

The PRRs listed below have an open comment period from Aug. 11, 2021 through Sept. 15, 2021.

New PRR

PRR 1366 Settlements and Billing BPM, Emergency PRR, Updated charge code 6456 intertie deviation settlement to exempt hour ahead scheduling process market disruption intervals from intertie deviation settlement penalty assessment

As discussed during the August 4 Market Settlement User Group call, an emergency settlements release is required to resolve a design gap from the Intertie Deviation Settlement project. The solution implemented will prevent charging Intertie Deviation Settlement penalty to ISO Balancing Authority Areas in cases where Hour-Ahead Scheduling Process (HASP) market disruption occurs. Additional details on the August emergency settlements release component are provided in the following table.

The remaining artifact delivery schedule and target deployment plan for the release are provided in the table below. These dates are subject to change. Please submit any questions/comments as an “Inquiry Ticket” through CIDI.

BPM Library updates

The reference document on the ISO website lists the updated BPMs in the library.

The ISO may unilaterally make and implement revisions to the BPMs in emergency circumstances, as set forth in Sections 22.4.3 and 22.11 of the ISO Tariff and in Section 2.6 of the Business Practice Manual for BPM Change Management. An emergency PRR will continue through the BPM change management stakeholder process to obtain stakeholder input on the revisions and make other recommendations, as necessary.

Please note that affected parties must register in order to submit a PRR or written comments.

More information on the BPM change management process is available on the BPM webpage of the ISO website.