July 10, 2015



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Market Rules and Market Design



Energy Imbalance Market Transition Period Draft Tariff Language Posted, Call 7/22/15




The California ISO has scheduled a stakeholder call on July 22, 2015 to discuss the transition period draft tariff language for the Energy Imbalance Market.  Comments on the language are due by July 17.



Main Text

The ISO has scheduled a stakeholder call on July 22, 2015 to discuss the transition period draft tariff language for the Energy Imbalance Market (EIM).  The language is available at


As approved by the ISO Board of Governors in January 2015, the ISO will be amending its tariff to specify that all new EIM entities will be subject to a transition period after implementation for a period of six months. During the transition period, the provisions of ISO tariff Sections and the second sentence of Section shall not apply to constraints that are within the new EIM entity balancing area or affect EIM transfers between the new EIM entity and any other EIM entity that is subject to this subsection (b).


For the those intervals that experience infeasibilities described in those provisions, the ISO shall instead determine prices consistent with the provisions of Sections 27, 34, and Appendix C, that would apply in the absence of Section and the second sentence of Section In addition, during the transition period the ISO shall set the Flexible Ramping Constraint parameter specified in Section 27.10 for pricing purposes for the new EIM entity at an amount between and including $0 and $0.01.


Please submit comments on the transition period draft tariff language to by close of business July 17.


Web Conference Details

Date: Wednesday, July 22, 2015

Time: 10:00 a.m. to 12:00 p.m. (Pacific Time)

Guests are welcome to participate via web conferencing or telephone.

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Connection Instructions

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Web Conference Information

Web Address (URL):

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Call-in: 888-621-9649, Passcode: 420694#


Technical Support or contact AT&T Connect support at 1-888-796-6118.



For More Information Contact

Kristina Osborne at 916-608-7237 or


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