Energy Imbalance Market (EIM) Overview

EIM’s advanced market systems automatically find the lowest-cost energy to serve real-time consumer demand across a wide geographic area. Offered in 2014 to western utilities in 14 states, it helps reduce carbon emissions by facilitating the efficient connection of renewable resources and enhancing grid resiliency. The EIM also enables grid operators to use low cost excess renewable energy that avoids having to turn off those resources to protect grid reliability, and supports clean energy policies.

Benefits of EIM

Reduced costs

Operating flexibility

{1} ##LOC[OK]## {1} ##LOC[OK]## ##LOC[Cancel]## {1} ##LOC[OK]## ##LOC[Cancel]## Loading Data... Greenhouse gas emissions tracking report This report includes an accounting of GHG emissions for the ISO balancing authority area, including ISO internal resources, net imports, and transfers from Energy Imbalance Market entities into the ISO BAA. This report also reflects the ISO assessment of GHG reductions associated with EIM operations. Greenhouse Gas Emissions Tracking Report - December, 201612/28/2016 14:00 Greenhouse Gas Emissions Tracking Methodology12/28/2016 14:00 Greenhouse Gas Emissions Tracking Report - Frequently Asked Questions12/28/2016 14:02 Draft greenhouse gas emissions tracking report call Nov 14, 2016 Rename Group View/Edit Properties View Impact Add Existing Group/Document New Group New Page Link Remove Group Undo Changes Copy Item Paste Paste as Child Paste Above Paste Below Move Move as Child Move Above Move Below Update Document Title View/Edit Properties View Impact Remove Document Delete Document Undo Changes Copy Item Paste Paste as Child Paste Above Paste Below Move Move as Child Move Above Move Below View Impact View/Edit Properties View Impact Remove Page Link Create a copy Delete

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Overview presentations

{1} ##LOC[OK]## {1} ##LOC[OK]## ##LOC[Cancel]## {1} ##LOC[OK]## ##LOC[Cancel]## Loading Data... How the Energy Imbalance Market Works Describes the roles and responsibilities of the key players in EIM and the business processes Introduction to the Energy Imbalance Market Provides a high level overview of the energy imbalance market Rename Group View/Edit Properties View Impact Add Existing Group/Document New Group New Page Link Remove Group Undo Changes Copy Item Paste Paste as Child Paste Above Paste Below Move Move as Child Move Above Move Below Update Document Title View/Edit Properties View Impact Remove Document Delete Document Undo Changes Copy Item Paste Paste as Child Paste Above Paste Below Move Move as Child Move Above Move Below View Impact View/Edit Properties View Impact Remove Page Link Create a copy Delete

FAQs and company profiles

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Quarterly benefits reports

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Benefit assessments

{1} ##LOC[OK]## {1} ##LOC[OK]## ##LOC[Cancel]## {1} ##LOC[OK]## ##LOC[Cancel]## Loading Data... Arizona Public Service - ISO Energy Imbalance Market Economic Assessment6/03/2015 11:36 Puget Sound - ISO Energy Imbalance Market Benefits Analysis5/05/2015 08:55 NV Energy ‐ ISO Energy Imbalance Market Economic Assessment4/29/2014 13:57 Qualitative Assessment of Potential Reliability Benefits for a Western Energy Imbalance Market3/12/2013 12:48 PacifiCorp-ISO Energy Imbalance Market Benefits3/13/2013 12:43 Rename Group View/Edit Properties View Impact Add Existing Group/Document New Group New Page Link Remove Group Undo Changes Copy Item Paste Paste as Child Paste Above Paste Below Move Move as Child Move Above Move Below Update Document Title View/Edit Properties View Impact Remove Document Delete Document Undo Changes Copy Item Paste Paste as Child Paste Above Paste Below Move Move as Child Move Above Move Below View Impact View/Edit Properties View Impact Remove Page Link Create a copy Delete

Implementation agreements

{1} ##LOC[OK]## {1} ##LOC[OK]## ##LOC[Cancel]## {1} ##LOC[OK]## ##LOC[Cancel]## Loading Data... Seattle City Light - Energy Imbalance Market implementation agreement Idaho Power Company - Energy Imbalance Market implementation agreement Portland General Electric - Energy Imbalance Market implementation agreement Arizona Public Service - Energy Imbalance Market implementation agreement Puget Sound Energy - Energy Imbalance Market implementation agreement NV Energy - Energy Imbalance Market implementation agreement PacifiCorp - Energy Imbalance Market implementation agreement Rename Group View/Edit Properties View Impact Add Existing Group/Document New Group New Page Link Remove Group Undo Changes Copy Item Paste Paste as Child Paste Above Paste Below Move Move as Child Move Above Move Below Update Document Title View/Edit Properties View Impact Remove Document Delete Document Undo Changes Copy Item Paste Paste as Child Paste Above Paste Below Move Move as Child Move Above Move Below View Impact View/Edit Properties View Impact Remove Page Link Create a copy Delete