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Multi-stage generating unit modeling
The California ISO is developing software functionality for modeling multi-stage generating units, such as combined cycle generating plants. These units pose particular challenges with modeling and dispatch because they have multiple configurations in which they can operate and forbidden regions in which they cannot operate. The ISO seeks to review with stakeholders the key policy issues that arise with modeling these units, and to maintain an open dialog as implementation of the multi-stage generating functionality goes forward. The ISO is developing rules for the transition costs specified in the multi-stage generating transition matrix. These mitigation rules to balance flexibility and prevent economic withholding are part of the Bidding and Mitigation of Commitment Costs stakeholder initiative.
- Outcome
  The ISO activated multi-stage generator modeling that optimizes the commitment and dispatch of generating units that have multiple operating configurations. There are 17 multi-stage generator modeling resources to the market. — Implemented: Dec. 6, 2010; FERC Order: July 30, 2010 (ER10-1360); Board of Governors approval: May 18, 2009
- Multi-stage generating unit modeling - papers and proposals
- Multi-stage generating unit modeling - tariff language
- Comments on MSG Unit Modeling Stakeholder Meeting Mar 14, 2011
- Forbidden operating regions
- Comments on Third Draft Tariff Language
- Comments on Second Draft Tariff Language
- Comments on Draft Tariff Language
- Comments on Revised Straw Proposal 13-Apr-2009
- Comments on Straw Proposal 17-Feb-2009
- Comments on Issue Paper 07-Nov-2008