Phase 2 of the WEIM resource sufficiency evaluation enhancements initiative considers outstanding enhancements to the WEIM RSE such as the consideration of load conformance, identifying the correct metrics and quantity of uncertainty that should be tested for, and how block hourly exports from the ISO BAA that may be cleared due to advisory WEIM transfers are treated. Phase 2 also investigates the ability for the WEIM to provide assistance for balancing authority areas who have failed the RSE.
OUTCOME (Phase 1): The California ISO activated WEIM resource sufficiency evaluation enhancements Phase 1 (RSEE1) on June 1, 2022. RSEE1 benefits market participants by implementing enhancements to ensure resource sufficiency evaluation is administered accurately and applied equitably, and by improving the accuracy and transparency of the resource sufficiency evaluation.
| Proposal Development | Decision | Implementation | Completed/Closed |
|---|---|---|---|
|
Mar 21, 2023 Revised final draft tariff language posted
Nov 07, 2022 Revised final proposal posted |
Mar 31, 2023 Tariff amendment filing (ER23-1534)
Dec 14, 2022 Joint WEIM Governing Body and Board of Governors approval Sep 14, 2022 FERC Order accepting compliance filing (ER22-1278) Jun 07, 2022 Compliance filing (ER22-1278) May 27, 2022 FERC approval (ER22-1278) Mar 11, 2022 Tariff amendment filing (ER22-1278) Feb 09, 2022 ISO Board of Governors approval - phase 1 Feb 02, 2022 Market Surveillance Committee opinion adopted - phase 1 |
Jun 01, 2022 - phase 1
Implementation milestones
Jul 01, 2023 - phase 2 track 1 Jun 2024 - phase 2 track 2 |