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  • Flexible ramping product
    In August 2011, the California ISO Board of Governors approved the flexible ramping constraint interim compensation methodology. At that time the ISO committed to begin a stakeholder initiative to evaluate the creation of a flexible ramping product that will allow the ISO to procure sufficient ramping capability via economic bids. Through this initiative, the ISO will evaluate allocating costs to generation and load in accordance with cost causation principles.
    • Outcome
      On Nov. 1, 2016, the ISO implemented two market products in the 15- and 5-minute markets: Flexible Ramp Up and Flexible Ramp Down uncertainty awards. These products provide additional upward and downward flexible ramping capability to account for uncertainty due to demand and renewable forecasting errors. In addition, the existing flexible ramping sufficiency test was extended to ensure feasible ramping capacity for real-time interchange schedules. — Effective date: Nov. 4, 2016; Implemented: Nov. 1, 2016; FERC approval: ER17-40: Oct. 31, 2016, ER16-2023: Sept. 26, 2016; Tariff amendment filings: ER17-40: Oct. 6, 2016, ER16-2023: June 24, 2016; Board of Governors approval: Feb. 3, 2016
    • Flexible ramping product - papers and proposals
    • Flexible ramping product - tariff language
    • Comments on revised draft final proposal - 2016
    • Comments on revised draft technical appendix
    • Comments on draft technical appendix
    • Comments on draft final proposal includes 15-minute market and energy imbalance market
    • Comments on revised straw proposal includes 15-minute market and energy imbalance market
    • Comments on straw proposal includes 15-minute market and energy imbalance market
    • Comments on second revised draft final proposal
    • Comments on flexible ramping product workshop Oct 2, 2012
    • Comments on technical workshop discussion Sep 18, 2012
    • Comments on revised draft final proposal
    • Comments on supplemental foundational approach paper
    • Comments on technical workshop discussion May 29, 2012
    • Comments on draft final proposal
    • Comments on cost allocation straw proposal
    • Comments on third revised straw proposal
    • Comments on second revised straw proposal
    • Comments on revised straw proposal
    • Comments on straw proposal
    • Comments - draft tariff language
    • Comments - flexible ramping constraint penalty price - draft tariff language
    • Jun 24, 2016 Tariff amendment - flexible ramping product (ER16-2023)
    • Web conference - revised draft tariff language - May 26, 2016
    • Web conference - draft tariff language - May 9, 2016
    • Web conference Jan 5, 2016
    • Workshop Nov 18, 2015
    • Meeting - working group - Jun 17, 2015
    • Web conference Apr 21, 2015
    • Web conference Dec 11, 2014
    • Meeting Aug 20, 2014
    • Meeting Jun 9, 2014
    • Technical bulletin teleconference Apr 21, 2014
    • Stakeholder meeting Oct 30, 2012
    • Stakeholder meeting Oct 2, 2012
    • Stakeholder workshop Sep 18, 2012
    • Stakeholder meeting Aug 16, 2012
    • Stakeholder meeting Jul 17, 2012
    • Stakeholder web conference Jul 2, 2012
    • Stakeholder meeting May 29, 2012
    • Stakeholder meeting Apr 16, 2012
    • Stakeholder teleconference Mar 14, 2012
    • Stakeholder meeting Jan 12, 2012
    • Stakeholder meeting Dec 5, 2011
    • Stakeholder meeting Nov 7, 2011
    • Flexible ramping product - relevant market notices