Release User Group Agenda

Release User Group Agenda October 28th, 2014 10:00 a.m. 11:00 a.m. (Pacific Time) Web Conference Information URL: https://www.connectmeeting.att.com Meeting Number: 8665282256 Access Code: 5251941 Conference Call Information Domestic Call In: (866) 528-2256 International Call In: (216) 706-7052 Access Code: 5251941

Release User Group Agenda October 28th, 2014 10:00 a.m. 11:00 a.m. (Pacific Time) Time Topic Facilitator 10:00 10:05 Agenda & ISO Roll call Janet Morris 10:05 11:00 Release Plan Jeff Dawson Jeremy Malekos John Huetter Natasha Sodhi Roxann Hall Kelly Alga John Williams Chris McIntosh Eureka Cullado Indu Nambiar LuAnn Rivera Yinka Ajede Elli Johnston Adrian Chiosea Page 2

Release Plan 2014 Fall 2014 November 1, 2014 (on track) Energy Imbalance Market (EIM) binding dispatches, related financial settlements, and actual energy transfers between balancing authority areas Outage Management System Replacement (OMS) - activation with EIM Fall 2014 December 1, 2014 Outage Management System Replacement (OMS) Tariff section 9 changes effective 12/1/14 (pending regulatory action) Many to Many: SCP Availability Calculations Due to OMS Tariff section 9 changes, effective date is now 12/1/14 (pending regulatory action) Commitment Costs Enhancements Independent efforts Flexible Resource Adequacy Criteria and Must Offer Obligation (FRAC-MOO) Enabling Demand Response Page 3

Release Plan 2015 Spring 2015 Maintenance Release No major functional changes Enhancements or other changes required for summer operations Minor design changes resulting from the Fall 2014 release Other system maintenance as needed Circular Scheduling Many to Many Substitution/App Consolidation Convergence Bidding at the Interties Fall 2015 (tentative) Energy Imbalance Market (EIM) 2015 / EIM Enhancements Contingency Modeling Enhancements BAL-003 Compliance (Frequency Response) RIMS functional enhancements OMAR replacement project ADS User Interface Replacement and Web Service Standardization Capacity Procurement Mechanism Replacement Reliability Services Initiative - tentative based on policy phase Flexible Ramping Product tentative based on policy phase Subject to further release planning: Subset of Hours (to follow Reliability Service Initiative) Acceptable Use Policy - Analyzing to identify next services to enforce Expanding Metering and Telemetry Options Phase 2 Pay for performance year on design changes Pricing enhancements Page 4

2014-2015 Release Schedule http://www.caiso.com/documents/releaseschedule.pdf Page 5

The ISO offers comprehensive training programs Date November 4 November 10 November 10 November 11 November 12 Training Welcome to the ISO (webinar) Outage Management System for Generation training (webinar) Outage Management System for Transmission training (webinar) Settlements 101 (in person) Settlements 201 (in person) Training calendar - http://www.caiso.com/participate/pages/training/default.aspx Contact us - markettraining@caiso.com Page 6

Plans ISO is hosting twice weekly calls, presentations can be found here - http://www.caiso.com/pages/documentsbygroup.aspx?groupid=d0de8446- C30C-46CE-80B9-6413B6381B64 Fall 2014 Release Plan - http://www.caiso.com/documents/fall2014releasemarketsimulationplan.pdf

MAP Stage SIBR URL Change On 11/10, ISO will update the MAPSTAGE SIBR WEBSERVICE endpoints to match the convention used for Production o Currently MAP Stage is the OLDER convention of https://wsmap.caiso.com:4445/sst/runtime.asvc/[sibr] o These will be updated to match the NEWER, PRODUCTION convention of https://wsmap.caiso.com:4445/sst/sibr/[sibr] o The System Access Information document will be updated to reflect the correct URL s. o A Market Notice will be sent prior to the change as well

Fall 2014 Release External Deployment Plan http://www.caiso.com/documents/fall2014externaldeploymentplan.pdf Please refer to the external deployment plan for changes. Projects included: Energy Imbalance Market Full Network Model Expansion Many to Many: SCP & CPM Availability Calculations Outage Management System Replacement (OMS) FERC Order 789 Reliability Standard BAL-002 The Systems Access Information for Market Participants is available at http://www.caiso.com/documents/systemaccessinformation_marketparticipants.pdf. SLIC to WebOMS Business to Business API Mapping Document Posted The document provides a high level mapping of Scheduling and Logging for the ISO of California (SLIC) business to business (B2B) application programming interface (API) to the new WebOMS B2B API. Market participants should use this document in conjunction with the WebOMS B2B API technical specifications document posted on the ISO website at http://www.caiso.com/documents/interfacespecification- OutageManagementSystemReplacement.pdf to aid with the API development for WebOMS. Page 9

Fall 2014 Energy Imbalance Market (EIM) Milestone Details/Date Master File: Register EIM entity, EIM resources, EIM resource emission rate, EIM Interties SIBR: Accept and validate submitted EIM resource plan and load base schedule, EIM resource bids. ALFS: Forecast EIM load, EIM VER. EMS: Model updates EIM BAA, model EIM NSI. DAM/RTM: Perform the DCPA for each BAA for the constraint in the BAA and the test and mitigate the resources in the BAA; Decompose the LMP congestion by the constraint belong the same BAA; option for EIM entity unit commitment; All LMPs will not include marginal loss contributions from external network losses; The EIM entity access the interface to submit exceptional dispatch with EIM type ; send the latest valid prior RTD advisory results to EIM when ISO run RTCD. Model Greenhouse Gas (GHG) emission for EIM to ISO; Calculate BAAs transfers; Perform flexible ramping requirement sufficiency test. Meet flexible ramping requirement by BAA and total. MQS: Calculate resource unit contribution on congestion cost for real time congestion balance account. OMS: EIM submission of resource and transmission Outages Settlement: settle 15 minute and 5 minute markets IIE and UIE at LMP ; Calculate EIM LAP hourly volumetric weighted average LMP weighted by the load forecast deviations bounded by the min/max LMPs; Settle EIM administrative cost; create real-time congestion balancing account for each BAA; Collect and allocate underschedule penalty by month. Settle EIM resource BCR. Allocate uplift to the BAA shared by the transfers. Pay the flexible ramping capacity use current formula, allocate the cost prorata to the requirements. CMRI/OASIS/ADS: Publish the market results for EIM BAA and resources. Page 10

Fall 2014 Energy Imbalance Market (EIM) Market Operations, Market Instruments, Settlements and Billing Board Approval November 8, 2013 External Business Requirements http://www.caiso.com/documents/businessrequirementsspecificationv1_2- EnergyImbalanceMarket.pdf Metering no change SIBR 2/28/14 Master File RDT 3/5/14 CMRI 4/1/14 BPMs Tariff ADS by 4/1/14 OASIS by 4/1/14 Charge code matrix posted; configuration guides 4/1/14 Draft EIM BPM posted July 1 PRR process started on 7/23/14 Draft EIM with FNM Expansion Structured Scenarios posted: http://www.caiso.com/documents/energyimbalancemarket- FullNetworkModeExpansionStructuredScenarios.pdf Start market simulation on 7/8/14 File: 2/28/14 Training - Settlements Sept 3, 2014 FERC approval on 6/20/14 Production Activation October 1, 2014 - parallel non-binding production November 1, 2014 - binding dispatches, related financial settlements, and actual energy transfers between balancing authority areas Page 11

Fall 2014 Outage Management System (OMS) OMS: New OMS replaces SLLIC and current OMS (transmission) with a single outage management system. Application Programming Interfaces (APIs) will be modified to support new data structures and functionality, and a new user interface will be provided. Managing Full Network Model Market Instruments Outage Management Market Operations Draft Final Proposal Posted December 3, 2013 Conduct Stakeholder Call December 17, 2013 (pushed from December 10) Stakeholder Comments due December 23, 2013 (pushed from December 17) Present to Board of Governors February 6, 2014 External Business Requirements - Draft Posted June 28, 2013 External Business Rules Posted February 26, 2014 External Business Requirements - Final http://www.caiso.com/documents/externalbusinessrequire mentsspecification-outagemanagementsystem- Replacement.pdf Page 12

Fall 2014 Outage Management System (OMS) Generation - January 8, 2014 Transmission - January 27, 2014 Developer Customer Partnership Group (CPG) Business CPG Cutover CPG Business Process Changes Updated BPMs Other - February 10, 2014 Publish updates - April 9, 2014 Master File (Gen RDT) - May 24, 2014 Publish final updates for Sandbox API testing May 30, 2014 Publish alternative Doc Attach WSDLs August 5, 2014 Updates per Market simulation feedback September 5, 2014 Generation: January 21, 2014 Transmission: February 19, 2014 Generation : March 11, 2014 Transmission : March 12, 2014 Joint : March 26, 2014 August 14, 2014 October 9, 2014 Manage Generation Outages; Manage Transmission Outages September 2014 - PRR Process Ongoing Sandbox Available for B2B service connectivity testing July 7, 2014 API - July 28, 2014; UI - August 5, 2014 Tariff Production Activation File Tariff: July 7, 2014 Tariff Approval: September 5, 2014 Tariff Effective Date Confirmed for 12/1: October 2, 2014 October 1, 2014 for EIM Parallel Production November 1, 2014 for EIM Tariff and EIM entities December 1, 2014 for non-eim entities Page 13

Fall 2014 Many to Many: SCP Availability Calculations Board Approval CIRA: Enhance SCP Availability Calculations Settlements: Impacts based on resource availability calculation in CIRA. Current system uses point and actual values in RAAM, with OMS there are only point values because of which the data settlements receive will be different than today. External Business Requirements File Tariff September 16, 2014 - Reliability Requirements July 29, 2014 Settlements and Billing (related to OMS) Many to Many: January 23, 2014 (original) March 13, 2014 (revised) May 16, 2014 (revised) June 19, 2014 (revised, shows phased approach) Application Consolidation: March 12, 2014 (original) June 19, 2014 (revised, shows phased approach) October 20 October 31, 2014 Structured: Scenarios posted w/timeline Unstructured: - - - Training August 19, 2014 SCs for Resources, Settlements (posted RAAM User Guide on 8/5) Production Activation December 1, 2014 Page 14

Commitment Costs Enhancements Application Software Changes Business Process Changes SIBR: Modification to SIBR rules to accommodate the change of increasing the Proxy Price cap from 100% to 125%. Master File: Modification to restrict Non Use-Limited resources to be on Proxy Cost only, as they shall no longer be allowed to be on Registered Cost. Use-limited resources may use either Registered or Proxy Cost option. Market Instruments: Updates to section C-3 to help manage gas price spikes (in the event that the more current GPI is greater than 125% of previous day s GPI in anyone of the ISO s six gas regions). A process needs to be in place to allow for revising the gas prices used in the commitment cost calculation and bid generation in the Day Ahead market. Implement a desktop procedure for the gas price spike Board Approval Sep 18, 2014 External Business Requirements Oct 15, 2014 Updated BPMs Dec 31, 2014 Tariff Dec 1, 2014 Production Activation Dec 1, 2014 Page 15

Flexible Resource Adequacy Criteria and Must-Offer Obligation (FRAC-MOO) RA System: modified to reflect the acceptance, verification and processing of Flexible Capacity RA data via GUI, determination of Effective Flexible Capacity (EFC) values, issuing EFC list, performing EFC test and determination of necessary backstop procurement for FRAC system deficiencies. Settlements and Billing: Settlement of FRAC-MOO backstop procurement for Flexible Capacity System Deficiencies. SIBR: modify to receive Flex RA data for RUC Board Approval March 19, 2014 External Business Requirements Reliability Requirements, Market Operations: October 10, 2014 (effective 11/6/14) Settlement & Billing: November 12, 2015 (effective 1/1/15) July 21, 2014 May 30, 2014 August 8, 2014 September 22 October 3, 2014: Unstructured (posted high level timeline on 8/11) December 1 12, 2014: Structured & Unstructured for RUC Validation, Settlements Draft Tariff submitted for comments File Tariff Training Production Activation May 19, 2014 August 1, 2014 August 19, 2014 for LSEs, SCs: posted RA and Supply Plan template on 8/8, CIRA User Guide posted 9/15 November 6, 2014 (Independent Fall Release) December 22, 2014 (RUC Validation only) Page 16

Enabling Demand Response: Enabling Demand Response Business Process Changes Board Approval A new application for DRPs to manage locations via user interface and application programming interface (API). Application will verify UDC account number uniqueness. : Based on existing business practices and policies External Business Requirements Sep 12 th, 2014 Updated BPMs Sep 19 th, 2014 Use cases Sep 19 th 2014 Web Service Data Requirements Oct 15 th 2014 Technical specifications with XSDs Dec 1, 2014 Dec 12, 2014 Tariff NA Production Activation Dec 15 th, 2014 Page 17

Spring 2015 Circular Scheduling Business Process Changes Masterfile: Creation of new field to capture attestation letter submission. Change to Intertie RDT to allow participants to view the new field. CAS: Identify circular schedules associated with a SC, with single e-tagged schedule with source/sink at the same BAA; the BAA could be CAISO or other BAA; Exclude dynamic, DC segment, open intertie, Wheeling through for load. CRR Claw Back/MQS: Identify the SC s affiliation for single SC and circular schedule MW. Build new rule to calculate value the CRR claw-back in dollars. Settlement: Identify the SC s affiliation for single SC. Identify the circular schedule Import/export MW applicable to IFM, HASP and real-time market. Build settlement rule that applies to a circular schedule, settle the Import to the ISO at the lower of LMPs at scheduling points for import and export for the MW in the market the schedule was awarded. Circular schedule is not eligible for BCR for the interval. Market Operations, Market Instruments, Settlements & Billing Manage Interchange Scheduling, Manage MQS, Manage Billing and Settlements Board Approval March 2012 External Business Requirements March 22, 2013 Updated BPMs Tariff Approved January 30, 2013 Production Activation April 1, 2015 Page 18

Spring 2015 Many to Many Substitution/App Consolidation Application Software Changes Board Approval External Business Requirements File Tariff CIRA: Add new functionality to process many to many substitution requests Enhance SCP Availability Calculations (in Fall 2014 Release) Provide single platform for management of resource adequacy and replacements /substitutions for associated outages Settlements: Impacts based on resource availability calculation in CIRA. Current system uses point and actual values in RAAM, with OMS there are only point values because of which the data settlements receive will be different than today. - Reliability Requirements Many to Many: January 23, 2014 (original) March 13, 2014 (revised) May 16, 2014 (revised) June 19, 2014 (revised, shows phased approach) Application Consolidation: March 12, 2014 (original) June 19, 2014 (revised, shows phased approach) - CIRA Yes - January 2015 (tentative) Production Activation April 1, 2015 Page 19

Spring 2015 Convergence Bidding on the Interties Business Process Changes This is an existing market functionality that is currently disabled. Will be reinstated in DAM in 2015 Spring release. Impacted systems: SIBR, IFM, Settlements, and CTS. Market Operations, Market Instruments, Settlements and Billing Board Approval February 5, 2014 External Business Requirements http://www.caiso.com/documents/external_business_requirements_sp ecification_ferc_order764.pdf Updated BPMs Tariff FERC Order March 20, 2014 Production Activation May 1, 2015 Page 20

Fall 2015 EIM 2015 Implementation of NV Energy as an EIM Entity Business Process Changes Board Approval External Business Requirements Updated BPMs Tariff Production Activation No changes expected No changes expected No changes expected No changes expected No changes expected No changes expected ISO to promote market network model including NVE area to nonproduction system and allow NVE to connect and exchange data in advance of by 5/15/15. Start of on 8/7/15. No changes expected Modeling NVE into the CAISO FNM through the EMS on 1/28/15 Production activation on 10/1/15. Page 21

Fall 2015 - Contingency Modeling Enhancements Study Results IFM/RTN: Adds a preventive-corrective constraint to the market cooptimization OASIS/CMRI: Publish preventive-corrective capacity awards with associated LMPC Settlements: Payment and charges for corrective capacity awards, allocation of cost of the corrective capacity constraint, no-pay provisions, bid cost recovery Manage Full Network Model, Market Operations, Market Instruments, Settlement and Billing, Definitions and Acronyms In Person Call: March 20, 2014 Distribute Results: Comments Due: Board Approval Spring 2015 External Business Requirements File Tariff Production Activation October 1, 2015 (Fall 2015 Release) Page 22

Fall 2016 BAL-003 Compliance On January 16, 2014, FERC approved BAL-003-1 Frequency Response and Frequency Bias Setting, with different implementation dates for different requirements. R1 goes into effect the first calendar day of the first calendar quarter 24 months after regulatory approval. http://www.gpo.gov/fdsys/pkg/fr-2014-01-23/pdf/2014-01218.pdf 4/1/16: RI effective date 12/1/16: 2017 BA FRO in place (start data collection) 4/1/18: Compliance effective date (supply data to NERC) (UPDATED) Business Process Changes Board Approval External Business Requirements Tariff Production Activation Fall 2016 (UPDATED) Page 23

Fall 2015 RIMS Function Enhancements Business Process Changes Board Approval External Business Requirements Updated BPMs Tariff Functional enhancements resulting from the Customer Partnership Group CPG). More details to be provided in the future. Production Activation Fall 2015 Page 24

Fall 2015 OMAR Replacement Project Business Process Changes Current metering space at the California ISO consists of three major software systems 1. A product that processes Revenue Quality Meter Data (RQMD) in to Settlement Quality Meter Data (SQMD) 2. A data repository of all SQMD used in Settlements 3. An external facing web application to enable market participant access to SQMD. The scope of the project is to replace/consolidate all the three above systems with a New Metering Solution Metering and Definitions & Acronyms (references to systems may need to change) Potential Level-II business process changes under Manage Market & Reliability Data & Modeling Manage Operations Support & Settlements Board Approval External Business Requirements Tariff Potentially needed Dates Production Activation Fall 2015 Page 25

Fall 2015 ADS UI Replacement and Web Service Standardization Business Process Changes Board Approval External Business Requirements Updated BPMs Tariff Port client from Delphi to new common user interface (ADS Query Tool and Real Time Functionality) Conform APIs to current ISO standards Production Activation Fall 2015 Page 26

Fall 2015 Capacity Procurement Mechanism Replacement Business Process Changes Board Approval External Business Requirements Updated BPMs Tariff Production Activation Page 27

Fall 2015 Reliability Services Initiative Business Process Changes The following systems could be impacted based on the below scope: CIRA, Settlements, SIBR, and Master File. Updates to the eligibility criteria for demand response to qualify as a Resource Adequacy (RA) resources Language on the eligibility criteria and must-offer requirement for storage to qualify as a RA resource Replacement and substitution rules for flexible RA resources New price and rules for the SCP for all RA resources including flexible resources New CPM price Reliability Requirements; Market Operations; Market Instruments; Billing & Settlements Board Approval Q1 2015 External Business Requirements Updated BPMs Tariff Production Activation Yes Yes Page 28

Fall 2015 Flexible Ramping Product Business Process Changes Board Approval External Business Requirements Tariff ADS: Send Flexible Ramping Up/Down Awards to Market Participants in DAM for CAISO and FMM for CAISO and EIM. CMRI : Report Flex Ramp Up/Down Awards to Market Participants. DAM/RTM: Co-optimize Energy Ancillary Services and Flexible Ramping up/down. OASIS: Show aggregated Flexible Ramping capacity awards, requirements and marginal prices. Settlements: Settle Flexible Ramping payment at marginal price in Day Ahead and Real Time markets. Add no pay and cost allocation for Flexible Ramping. SIBR: Include Flexible Ramping bidding capability and relevant validation rules of bid cap, self provision. Market Operations; Market Instruments; Settlements & Billing; Definitions & Acronyms. Maintain Day Ahead Process, Real Time Process, Manage Billing and Settlements February 2015 Restart Stakeholder Process in May, 2014 http://www.caiso.com/informed/pages/stakeholderprocesses/flexiblerampingproduc t.aspx ; 4/14/2014: Change the FRC penalty price from $247 to $60 in FMM Yes; The language proposes to change the flexible ramping constraint penalty price from $247 to $60. The draft tariff language is available on the ISO website at http://www.caiso.com/documents/drafttarifflanguage_flexiblerampingproduct.doc Production Activation Fall 2015 Page 29

Expanding Metering and Telemetry Options Phase 2 Business Process Changes No ISO. POC s to test that current systems support the proposals. Proposal 1 - Use of Internet for Telemetry and ISOME Meter Data bridging to the CAISO Energy Communication Network (ECN); Proposal 2 - Use of Internet for Telemetry (with SSL) and Meter Data (w/o SSL) transport directly to the CAISO; Proposal 3 - Expand the use of Inter-Control Center Communications Protocol (ICCP) as an allowable option for RIG Aggregators (telemetry only); Proposal 4 - Expand the ability for resources to submit Settlement Quality Meter Data; Proposal 5 - Remove RIG Aggregator resource ownership and location limitations. Metering, Direct Telemetry Board Approval External Business Requirements Updated BPMs Tariff Production Activation No Changes Page 30