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March 17, 2021


Information Only


FERC Order 831 Compliance Initiative: Deployment Effective for Trade Date 3/20/21


The California ISO is deploying the functionality of its Federal Energy Regulatory Commission (FERC) Order 831 Compliance initiative, effective for trade date March 20, 2021, for both Real-Time and Day-Ahead Markets of March 20.


The ISO is implementing its FERC Order 831 Compliance functionality, which include the following changes:

  • Hard Energy Bid Cap raised to $2,000/MWh
  • Soft Energy Bid Cap set at $1,000/MWh
  • Minimum Load Cost Hard Cap set at $2,000/MWh
  • Market Penalty Parameters scaled up as applicable based on the $2,000/MWh Hard Energy Bid Cap
  • After-the-fact cost recovery for eligible energy bids above the Hard Energy Bid Cap and eligible minimum load bids above the Minimum Load Cost Hard Cap, subject to approval from the ISO

Scheduling Coordinators may begin to submit energy and minimum load bids in the Scheduling Infrastructure Business Rules (SIBR) up to the respective $2,000/MWh hard caps, subject to existing bid validation rules, upon implementation of this functionality. Additional information on bid validation rules for specific resource types and changes to Market Penalty Parameters are detailed in revised versions of the Market Instruments Business Practice Manual (BPM) and Market Operations BPM respectively. The Proposed Revision Requests (PRRs) detailing these edits will be available prior to the project activation date on the BPM Change Management website at


Please refer to the links below for more information on FERC Order 831 Compliance functionality.


FERC Order No. 831 compliance filing:


Market Instruments BPM:


Market Operations BPM:



Contact your Client Representative or ISO Customer Service at 916-608-7320

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California Independent System Operator | P.O. Box 639014 | Folsom, CA 95630 | United States