Capping Local RA Requirements at System RA Requirements
ISO proposes to cap the local resource adequacy requirement at the system level, addressing concerns for load serving entities with differing capacity needs. The proposal aims to prevent over-committed capacity and ensure reliability by implementing replacement rules for outages. The local requirement is limited to the system requirement on a monthly and annual basis, promoting grid stability and efficiency.
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Presentation Transcript
Capping Local RA Requirements at System RA Requirements February 9, 2015 Karl Meeusen California ISO
ISO proposes to cap the local RA requirement at the system requirement Addresses replacement requirement concerns for LSE s with a local capacity requirement greater than a system capacity requirement Local resource on planned outages are also automatically considered system resources and maybe subject to replacement requirement for the outage The additional capacity offers limited additional local reliability benefits Consistent with proposal made by ISO in the Reliability Services stakeholder initiative Page 2
Benefits of the ISO proposal Prevents other load serving entities from taking outages and leaning on the over-committed capacity Due to ISO replacement rule, the LSE may be required to replace an outage resulting in the LSE s total capacity in aggregate to be beyond the load serving entity s peak demand and reserve margin requirement Page 3
Local requirement capped at the system requirement in monthly and annual showings 2500 2000 1500 RA MW 1000 500 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Local RA requirement System RA requirement Page 4
