California Assembly Bill 380, now Public Utilities Code § 380, requires that the California Public Utilities Commission (CPUC), in consultation with the California ISO, establish resource adequacy requirements for all load serving entities within the CPUC jurisdiction. The CPUC Energy Division administers the Resource Adequacy (RA) program, reviews all RA-related compliance filings, and advises the presiding Administrative Law Judge in ongoing RA proceedings.

The CPUC served its annual Resource Adequacy subpoena on the ISO on March 30, 2023.

The CPUC is requesting data from the ISO in thirty-two broad categories: (1) RA import allocations, (2) supply plans filed by generators and monthly validations for RA resources, (3) list of units confirmed to provide RA to the ISO, (4) economic bids and self-schedules, (5) ISO settlement quality meter data, (6) access to OMS application, (7) monthly ISO Masterfile data, (8) flexible capacity needs assessment data and allocations, (9) access to CIRA data base, (10) energy management system (EMS) data, (11a) capacity procurement mechanism (CPM) and capacity solicitation process (CSP) results, (11b) CPM settlement data, (11c) reliability must run (RMR) cost data, (12) reliability event reports sent to WECC, (13) demand response (PDR/RDRR) and non-generating resource (NGR) settlement data, (14) CPUC jurisdictional LSE annual and monthly deficiency notifications, (15) local capacity study data, (16) local residual analysis, (17) CPM and RMR designation capacity and costs allocations, (18) notices of intent to retire/mothball/return to service, (19) CEC subpoena data, (20) resource adequacy availability incentive mechanism (RAAIM) data, (21) demand response (DR) registration system information, (22) price taker exports, (23) use limited resource information, (24) wheeling transactions, (25) counting firm load as contingency reserves by IOUs, (26) market battery state of charge, (27) generation resource PNODE location, (28)  ancillary services settlement data for demand response resources, (29) identification of co-located storage resource configurations, (30) meter data for hybrid energy storage, (31) proxy demand response commitment cost offers, and (32) data on projects in interconnection queue. The CPUC requests this data to allow it to evaluate the success of the RA program on an annual basis, and to determine whether program modifications could improve the CPUC's ability to fulfill its statutory program in future program years.  The 2023 schedule for data releases is located on pages 25-31 of the subpoena. The confidentiality of any data disclosed is protected by a confidentiality agreement between the ISO and the CPUC.

Any market participant that objects to the ISO producing the requested documents and information must submit its objection by noon on April 20, 2023, along with a court order or other appropriate order that prohibits disclosure in response to the subpoena. Unless the ISO receives such an order by the listed due date, the ISO will thereafter respond to the subpoena.