July 31, 2015



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Supplemental Stakeholder Process Planned For EIM Readiness Criteria Tariff Language




The California ISO will conduct a supplemental stakeholder process to discuss the tariff language that incorporates Energy Imbalance Market (EIM) readiness criteria.  To allow time for the stakeholder and regulatory processes surrounding these proposed tariff revisions, including certification, the implementation date for NV Energy's entry into the Energy Imbalance Market will move to November 1, 2015 from October 1, 2015.



Main Text

On July 21, 2015, the Federal Energy Regulatory Commission directed the ISO to incorporate Energy Imbalance Market readiness criteria developed in a stakeholder process in May and June 2015 into the ISO tariff.  To meet this order, the ISO will be conducting an additional stakeholder process to develop the tariff language and ensure it properly reflects all readiness criteria.  Information regarding the criteria, stakeholder comments, and responses to comments is available on the ISO website as indicated below.  The ISO will file the proposed tariff language at the end of the stakeholder process seeking Commission approval.


Although both the ISO and NV Energy expect to complete planned readiness activities by October 1, the ISO is moving the NV Energy EIM implementation to November 1, 2015 from October 1, 2015.  This will provide more time for the ISO to continue in its deliberate steps of vetting the readiness criteria and tariff language with stakeholders, and it will provide sufficient time to obtain the necessary regulatory approvals before the start of financially binding operations.


Stakeholder process and FERC filing timeline:


Post tariff language: July 31, 2015

First stakeholder call: August 10, 2015

Stakeholders submit written comments: August 14, 2015

Responses to comments posted: August 18, 2015

Second stakeholder call: August 19, 2015

Submit compliance filing to FERC: week of August 24, 2015


The ISO and NV Energy will file the final certification of readiness criteria on October 1, 2015, after an adequate period of parallel operations, consistent with the tariff criteria filed on compliance.


To access the draft tariff language, click here.

Click here for more information on the EIM readiness criteria.



For More Information Contact

Janet Morris at (916) 608-7337 or


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