CAISO Draft 2022 Flex Capacity Needs Assessment

CAISO calculates the overall flexible capacity need of the ISO system and the relative contributions to this need attributable to the load serving entities (LSEs) under each local regulatory authority (LRA).

• This report details the system-level flexible capacity needs and the aggregate flexible capacity need attributable to CPUC jurisdictional LSEs.

• This report does not break-out the flexible capacity need by LSE attributable to individual local regulatory authorities (LRAs) other than the CPUC.

• The ISO will use the results from the study to allocate shares of the system flexible capacity needs to each LRA with LSEs responsible for load in the ISO Balancing Authority area consistent with the allocation methodology set forth in the ISO’s Tariff section 40.10.2.

• Based on that allocation, the ISO will advise each LRA of its MW share of the ISO’s flexible capacity needs.

• The key results of the ISO’s flexible capacity needs assessment for 2022 are based on the CEC’s 1-in-2 hourly IEPR forecast Managed Total Energy for Load, which looks at the following components:

            1. Baseline Consumption Load

            2. Behind the meter solar PV

            3. Behind the meter residential storage (RES)

            4. Behind the meter storage non-residential (NONRES)

            5. Additional achievable energy efficiency (AAEE)