CAISO Demand Response Resource User Guide
Contents
1. Real Time Unit Commitment RTUC An application of the RTM that runs every 15 minutes and commits Fast and Medium Start Units using the SCUC to adjust from Day Ahead Schedules and HASP Intertie Schedules T Real Time Economic Dispatch RTED The mode of the Real Time Dispatch that CAISO MPD MM Last Revised November 29 2007 20 DRAFT Demand Response Participation in MRTU Release 1 will optimally dispatch resources based on their Energy Bids excluding Contingency Only Operating Reserves except when needed to avoid an imminent System Emergency T RUC Procurement Target quantity to be procured in RUC based on CFCD Scheduling Coordinator An entity certified by the CAISO for the purposes of undertaking the functions specified in Section 4 5 3 of the CAISO Tariff T Short Term Unit Commitment STUC The Unit Commitment procedure runs at approximately T 52 5 minutes for a Time Horizon of approximately five 5 hours The STUC determines whether some Medium Start Units need to be started early enough to meet the Demand within the STUC Time Horizon using the CAISO Forecast of CAISO Demand The STUC produces a Unit Commitment solution for every 15 minute interval within the STUC Time Horizon and issues binding Start Up instructions only as necessary T CAISO MPD MM Last Revised November 29 2007 212. enhanced to show more data The CAISO will take appropriate steps in the publishing of the DR results to maintain the confidentiality of contracts This includes having the DR Providers review the report before it is published 6 1 Estimate of Demand Response Available MW The Demand Response providers shall provide the CAISO with an estimate of the MW available in each DR program as necessary The information shall be included with the Demand Response Forecast as an additional sheet in the workbook This is for monthly planning information purposes only The MW actually submitted when a DR program is called under Sections 2 3 and 4 will supersede any estimate in this monthly planning submission The document will also provide information on each of the programs including event limits hours per call calls per month and year notification time etc 7 Future Market Enhancements for Demand Response The CAISO has formed a Demand Response Post Release 1 working group as discussed in Section 1 above to address the future enhancements that will allow Demand Response resources to participate directly in the CAISO markets as dispatchable resources The design that is under consideration will allow demand resources also known as Participating Load to submit three part bids similar to a generators start up minimum load and multi segment energy bid that would consist of load curtailment cost minimum CAISO MPD MM Last Revised Novembe
3. beginning at seventy five minutes prior to the Trading Hour through which the CAISO conducts the following activities 1 accepts Bids for Supply of Energy including imports exports and Ancillary Services imports to be supplied during the next CAISO MPD MM Last Revised November 29 2007 19 DRAFT Demand Response Participation in MRTU Release 1 Trading Hour that apply to the MPM RRD RTUC STUC and RTD 2 conducts the MPM RRD on the Bids that apply to the RTUC STUC and RTD and 3 conducts the RTUC for the hourly pre dispatch of Energy and Ancillary Services T Integrated Forward Market IFM The pricing run conducted by the CAISO using SCUC in the Day Ahead Market after the MPM RRD process which includes Unit Commitment Ancillary Service procurement Congestion Management and Energy procurement based on Supply and Demand Bids T Participating Load An entity including an entity with Pumping Load providing Curtailable Demand which has undertaken in writing by execution of a Participating Load Agreement to comply with all applicable provisions of the CAISO Tariff as they may be amended from time to time T Residual Unit Commitment RUC The process conducted by the CAISO in the Day Ahead Market after the IFM has been executed to ensure sufficient Generating Units System Units System Resources and Participating Loads are committed to meet the CAISO Forecast of CAISO Demand T
4. Demand Response resources will not participate in the CAISO market in Release 1 through an explicit market bid the CAISO will need to be notified via a manual process using an Excel spreadsheet when a Demand Response Provider plans to call on a DR Program Each Demand Response Provider will submit a spreadsheet to the CAISO The DR forecast is a best estimate by the Demand Response Provider based on historical performance and other factors In the future these estimates may be standardized to be based on an agreed upon load impact protocol that is approved by the CPUC as described in Section 5 The forecast is broken out by Demand Response Program by hour In the future the Demand Response Forecast will also be required to be broken out by RUC Zone Initially in 2008 the RUC zones will consist only of the UDC areas and MSS areas Therefore CAISO MPD MM Last Revised November 29 2007 7 DRAFT Demand Response Participation in MRTU Release 1 the Demand Response forecast will be required by UDC area and will not need to be defined more granularly In the future as the CAISO s forecasting ability improves and becomes more granular there may be modifications to the existing RUC zones These modifications will be communicated to stakeholders and the BPM for Market Operations will be updated with the new information Sufficient time will be provided for the Demand Response Providers to adjust their systems and programs to provide this informat
5. in MRTU Release 1 Working Group The CAISO MRTU Release 1 software will include limited functionality and ability for demand resources to participate directly in the CAISO wholesale markets The CAISO markets for MRTU Release 1 will accommodate pump storage hydro units and aggregated hydro pumps that participate in the CAISO markets as Participating Load Although the design is limited it may be possible for other types of demand resources to fit into this model allowing them to provide the CAISO imbalance energy as well as non spinning reserve as a participating load However as currently designed the existing Demand Response Programs managed by the three Investor Owned Utilities in California PG amp E SCE and SDG amp E and others are not compatible with the CAISO s current Participating Load model Since the existing Demand Response Programs provide valuable DR but are not compatible with the current Participating Load model the MRTU Release 1 Working Group was formed to develop a process by which the CAISO can immediately account for benefits provided by these Demand Response Programs in the CAISO energy markets 1 1 About this Guide The purpose of this user guide is to document a process that describes how Demand Response Programs and Demand Response resources can be incorporated into MRTU Release 1 The Guide focuses on DR being in MRTU as Non Participating Load This user guide is intended to be a living document that will be upd
6. program is scheduled to be initiated In order to adjust all hours the DR forecast will need to be received by the CAISO 75 minutes prior to the top of the first hour the program will be initiated Any adjustments made to the CFCD either up or down will be logged by the CAISO operator If conditions are such that a Demand Response Provider knows they will initiate a Day of Program by 10 00 a m the Day Ahead and sends that Demand Response forecast to the CAISO the CAISO will adjust the RUC procurement target in the Day Ahead Market as well as the Real Time CFCD for the following day to account for the demand response As described in Section 2 4 above the real time processes run continuously so the earlier the adjustment to the CFCD can be made will allow it to impact the various real time processes that commit units over a longer time horizon such as the STUC and RTUC 3 For example Trade Hour 10 begins at 0900 and ends at 1000 As such trading for Trade Hour 10 ends at 0745 i e T 75 minutes before the Trade Hour CAISO MPD MM Last Revised November 29 2007 14 DRAFT Demand Response Participation in MRTU Release 1 4 Emergency Programs Emergency Programs also known as Interruptible or non firm programs are triggered based upon a CAISO declared Stage 2 or Stage 3 emergency or for a local transmission emergency These programs may be initiated by the Demand Response Provider themselves or by request from the CAISO 4 1 Process f
7. 7 08 a m for Trading hour ending 7 looking out over a time horizon for unit commitment of T 15 7 45 am to T 240 12 00 pm Depending on system conditions and the quantity of Demand Response provided the adjustment to the CFCD may or may not result in a change to Real Time unit commitment CAISO MPD MM Last Revised November 29 2007 12 DRAFT Demand Response Participation in MRTU Release 1 3 Day Of Price Responsive Demand Response Programs Day Of Price Responsive Demand Response Programs are initiated by Demand Response Providers and may be initiated based on CAISO system conditions or other specific triggers such as forecasted load expected heat rate indicator forecasted high prices CAISO Alerts or Warnings forecasted or actual temperature etc CAISO declared system emergencies are covered under the Emergency Programs described in section 6 below Under Day of Price Responsive Programs customers are notified the same day the event will occur and depending on the program are given as much as 3 hours notice to as little as 15 minutes notice to curtail load The following sections describe in detail the process for how Day Ahead Demand Response Programs will participate and be accounted for in the CAISO markets for MRTU Release 1 The overall process is shown graphically below Each box that represents a process is explained in detail in the sections that follow Process Overview Day Of Programs DR
8. DRAFT Demand Response Participation in MRTU Release 1 E gt California ISO Your Link to Power CAISO Demand Response Resource User Guide Guide to Participation in MRTU Release 1 November 29 2007 Version 3 0 CAISO MPD MM Last Revised November 29 2007 DRAFT Demand Response Participation in MRTU Release 1 Table of Contents 1 INTRODUCTION 1 1 About this Guide 1 2 CAISO Requirements 2 DAY AHEAD DEMAND RESPONSE PROGRAMS AND DAY OF PROGRAMS CALLED DAY AHEAD 2 1 Process for Day Ahead Programs 2 2 Submission of Demand Response DR Forecast 2 3 Accounting for Demand Response in the RUC Process 2 4 Accounting for Demand Response in the Real Time Market Unit Commitment Processes 3 DAY OF PRICE RESPONSIVE DEMAND RESPONSE PROGRAMS 3 1 Process for Day Of Programs 3 2 Adjustments for Day Of Programs in the Day Ahead and Real Time Markets 4 EMERGENCY PROGRAMS 4 1 Process for Emergency Programs 5 LOAD IMPACT PROTOCOLS 5 1 Actual DR Performance 6 REPORTING DR RESULTS TO THE MARKET CAISO MPD MM Last Revised November 29 2007 14 14 15 15 15 16 17 DRAFT Demand Response Participation in MRTU Release 1 6 1 Estimate of Demand Response Available MW 17 7 FUTURE MARKET ENHANCEMENTS FOR DEMAND RESPONSE 17 8 REFERENCES 18 8 1 CAISO Contacts 18 9 GLOSSARY OF TERMS 18 CAISO MPD MM Last Revised November 29 2007 3 DRAFT Demand Response Participation in MRTU Release 1 1 Introduction In t
9. Provider submits hourly CAISO Operator adjusts DR Forecast to the CAISO by CFCD for the Real Time T 75 of the first hour the market for relevant hours proaram will be initiated to account for DR DR Provider sends initial DR results to CAISO no more than 7 days following the trade day DR Provider sends final CAISO reports DR DR results on all results to the market on programs to CAISO by an annual basis end of calendar year CAISO MPD MM Last F DRAFT Demand Response Participation in MRTU Release 1 3 1 Process for Day Of Programs Demand Response Providers will fill out the DR Price Responsive Program spreadsheet with the relevant data for the Day Of Program or programs being called and e mail to the CAISO following the same process described in Section 2 2 above as soon as possible after an event is triggered but no later than the Trading Hour minus 75 minutes Real Time Market close time Demand Response Providers will report actual results to the CAISO using the process described in Section 5 below 3 2 Adjustments for Day Of Programs in the Day Ahead and Real Time Markets The CAISO will adjust the CFCD based on the DR Forecast in Real Time no later than T 75 minutes for each hour that a program is scheduled to be initiated This timing corresponds to the Real Time Market close time Depending on when the DR forecast is received the CAISO will adjust the CFCD for all hours or only a portion of hours the DR
10. am Tje Demand Bidding Program Day Ahead Heat Rate Exceed 15K BTU 9 3 2007 9 02 40 2 Critical Peak Pricing Program Day Ahead 42 Heat Rate Exceed 15K BTU 9 3 2007 9 02 25 Capacity Bidding Program Day Ahead Heat Rate Exceed 15K BTU Third Party Contract Day Of CAISO Flex Alert Demand Bidding Program Capacity Bidding Program September 4 2007 Load Curtailment Inc HE15 MW 25 4 32 5 25 40 Day Of CAISO Stage 1 Day Of Heat Rate Exceed 15K BTU Total Price Response MW 65 2 50 4 72 5 3 Email Daily DR Forecast to the following CAISO email addresses Shift Supervisors ClISOSS caiso com or ShiftSupervisors caiso com Day Ahead Market CAISOMktOps caiso com Hour Ahead Market MarketOpsHourAhead caiso com Also cc JGoodin caiso com GPerez caiso com BSK cpuc ca gov Please see Attachment A for the DR Price Responsive Program Forecast Spreadsheet 2 3 Accounting for Demand Response in the RUC Process The purpose of the RUC Residual Unit Commitment is to procure additional capacity in the Day Ahead Market that is required to meet the CAISO forecast of CAISO demand above what was committed in the Integrated Forward Market IFM The RUC process runs after the IFM is complete See Figure 1 below for CAISO Day Ahead processes The RUC process is based on specific requirements for serving expected CAISO Demand less any Demand scheduled in the IFM These requirement
11. applicable load impact protocols is currently being addressed by the CPUC in the DR Rulemaking R 07 01 041 proceeding CAISO MPD MM Last Revised November 29 2007 15 DRAFT Demand Response Participation in MRTU Release 1 For the purposes of reporting DR Performance to the CAISO on Day Ahead and Day Of Programs the three main Demand Response providers have agreed to use a 3 in 10 baseline where the hourly average is based on the three 3 highest energy usage days of the immediate past ten 10 similar days The three 3 highest energy usage days are those days with the highest total kilowatt hour usages during the program hours The past ten 10 similar days will include Monday through Friday excluding holidays and will additionally exclude days when the customer was paid to reduce load on an interruptible or other curtailment program or days when rotating outages were called These baseline methodologies will be further refined in the future 5 1 Actual DR Performance The actual DR response based on application of the appropriate baseline methodologies see Section 5 will be reported to the CAISO in a separate spreadsheet titled DR Program Results This spreadsheet will contain results for all programs by event date and by hour This information will be sent to the CAISO within 7 days of the trade day after the event or as soon as possible thereafter If additional updates are required following the 7 day report to correc
12. ated periodically to reflect added functionality and enhancements that further eliminate the manual processes described herein and seek to seamlessly integrate demand response resources into the CAISO s markets and its grid operations This user guide is the result of a collaborative effort by Demand Response Providers as part of the MRTU Release 1 Working Group Further refinement to this guide is expected with the initiation of the MRTU Post Release 1 working group and its efforts CAISO MPD MM Last Revised November 29 2007 5 DRAFT Demand Response Participation in MRTU Release 1 1 2 CAISO Requirements The entity submitting Demand Response data and or bids to the CAISO must be a certified Schedule Coordinator A Scheduling Coordinator is an entity certified by the CAISO for the purposes of undertaking functions such as scheduling bidding and settlement and as further defined in Section 4 5 3 of the CAISO Tariff In this document Scheduling Coordinators that submit Demand Response data to the CAISO will be referred to as Demand Response Providers 2 Day Ahead Demand Response Programs and Day Of Programs called Day Ahead Day Ahead Demand Response Programs are initiated by Demand Response Providers and are triggered based on various conditions such as the day ahead forecasted temperature day ahead forecasted demand and high price forecasts Customers are typically notified the day prior to the event day that the program will be
13. d forecasts for the RTM the Demand Response MWs that were forecasted and accounted for in the RUC procurement target in the Day Ahead market will be accounted for in Real Time by reducing the CFCD for the hours that the Demand Response Program will be initiated This ensures that the DR is carried through and accounted for when the CAISO commits additional generating units in the RTM For example if a forecast for a Day Ahead DR Program is submitted to the CAISO for trade day tomorrow for hour ending 12 through hour ending 17 the CAISO operator would adjust the CFCD for the Real Time market for the same hours The real time processes run continuously so in this example assuming that T is 12 00 pm which is the first hour of the DR Program the HASP process when it runs at T 67 5 looking out a trading hour in the future would be performing the hourly pre dispatch of resources beginning 10 53 a m for hourly pre dispatch of units starting from 12 00 p m T to T 60 1 00p m The STUC process would run beginning at T 52 5 11 12 a m for that same trade hour and would be committing units for the time horizon T 15 minutes 11 45 a m through T 240 4 00 p m Therefore adjustments made the CFCD for hour ending 12 through 16 would be taken into account for this run and subsequent runs of the HASP and STUC processes If the adjustment to the CFCD were made well in advance the STUC could see this adjustment to the CFCD as early as approximately
14. he September 21 2006 MRTU FERC Order the CAISO was directed to work with market participants to present additional opportunities for Demand Response resources to participate in the CAISO market and to work with Load Serving Entities LSEs to develop methods for the accounting of expected demand response within Residual Unit Commitment RUC procurement In this regard five key demand resource working groups have been formed to help meet this important objective The five working groups are Demand Response Participation in MRTU Release 1 e Lead agency CAISO Demand Response Participation in MRTU Post Release 1 e Lead agency CAISO Demand Resource Product Specification e Lead agency CEC Infrastructure for Demand Resources e Lead agency CEC Vision for Demand Resources e Lead agency CPUC Each working group has specific objectives and resulting deliverables to produce with the over arching objective being to enable greater participation from demand resources in the wholesale power markets This User Guide was developed in response to this directive and is a result of the CAISO working collaboratively with the CPUC CEC and Demand Resource Providers to advance the integration of demand resources into the CAISO s wholesale market design 1116 FERC 61 274 CAISO MPD MM Last Revised November 29 2007 4 DRAFT Demand Response Participation in MRTU Release 1 and grid operations through the Demand Response participation
15. ined for the purpose of this user guide only Term Definition CAISO Forecast of CAISO Demand The forecast of CAISO Demand made by CFCD the CAISO for use in the CAISO Markets CAISO MPD MM Last Revised November 29 2007 18 DRAFT Demand Response Participation in MRTU Release 1 T Day Ahead Demand Response Program A program to provide a reduction in Demand that is initiated the day ahead of the actual event Day Of Demand Response Program A program to provide a reduction in Demand that is initiated the same day of the event Demand Response DR Forecast a MW quantity of Demand Response expected to be delivered Demand Response Program A program to provide a reduction in Demand in response to specified conditions or circumstances typically implemented by an LSE T Demand Resource Provider Any entity that provides demand response programs curtailable demand or services Demand Response Provider A certified SC that submits DR data to the CAISO Demand Response DR Results Actual MW Quantity of Demand Response delivered based on baseline and used to compare against DR forecast Emergency Demand Response Program Demand Response Programs that are initiated as a result of a local transmission emergency or when the CAISO calls a Stage 2 or Stage 3 emergency Hour Ahead Scheduling Process HASP The process conducted by the CAISO
16. ion by the new RUC zones Once the CAISO s RUC zones become more granular it will be required to submit the Demand Response forecast broken out by specific RUC Zone rather than the larger UDC area so the RUC procurement target can be adjusted based on the location of the Demand Response within the specific RUC Zone The Daily DR Forecast Spreadsheet will be updated as these changes are made The CAISO has defined the following RUC Zones for MRTU Release 1 e PG amp E UDC e Pasadena e Vernon e SCE UDC e Azusa e State Water e SDG amp E UDC e Banning Project e NCPAMSS e Colton e Anaheim e Riverside The process for submitting the Demand Response Forecast to the CAISO is as follows 1 Each day that a Demand Response Provider is planning to call a DR program it will fill out the Excel spread sheet DR Price Responsive Program Forecast 2 The spreadsheet should include all of the Demand Response Provider s Day Ahead and Day Of Price Responsive Programs even if they are not being called If a Day Ahead DR event is called the Demand Response Provider will fill out the data that pertains the to the specific DR Program that will be called no later than 10 a m the Day Ahead which corresponds to the Day Ahead Market close time CAISO MPD MM Last Revised November 29 2007 8 DRAFT Demand Response Participation in MRTU Release 1 Example of Demand Response Forecast Event Date Demand Response Provider Programs Progr
17. or Emergency Programs Demand Response Providers will fill out the spreadsheet entitled DR Emergency Program Forecast shown in Attachment B and e mail to the CAISO following the process described in Section 2 2 above as soon as possible after an event is triggered The CAISO will continue to follow the process defined in CAISO Operating Procedure No E 511 when making a request to a Demand Response Provider to trigger an Emergency Program Since emergencies are unpredictable and emergency responsive programs are dispatched as a last resort grid reliability measure the CAISO does not intend to adjust the RUC Procurement Target or the Real Time CFCD to account for the Demand Response provided by these programs Estimated actual DR response will be recorded in a separate spreadsheet titled DR Expected Results and submitted to the CAISO as described in Section 5 1 below 5 Load Impact Protocols Demand Response performance is determined by the Demand Response Provider based on the difference between the meter read and the calculated energy baseline Currently load impact protocols used to determine baselines may differ by program type and or by the three primary Demand Response Providers PG amp E SCE and SDG amp E In the near future there will likely be a need to agree to a set of load impact protocols applicable to determining Demand Response Program performance for CAISO operational use and purposes This issue of appropriate and
18. orecast of CAISO Demand CFCD to clear with supply in each of the processes Please see Figure 2 below for a description of the CAISO Real Time processes Figure 2 CAISO Real Time Processes Element Acronym Detail Market Power Applies to all Bids received by T 75 before the aan MPM Mitigation operating hour Executes at T 67 5 and looks at the next Trading Hour Hour Ahead Pre dispatches Non Dynamic System Resources HASP l Scheduling Process Pre dispatches AS on the interties Provides Advisory Schedules in 15 minute increments Executes hourly at T 52 5 Looks ahead 4 5 hours to meet the CAISO demand forecast in each 15 min Short Term Unit interval and commits Short and Medium Start Units STUC a Commitment if commitment decision can not be postponed for the next STUC RTUC execution Otherwise commitment decisions are advisory Real Time Unit RTUC Executes every 15 min at the middle of each Commitment quarter of the hour Looks out between four and CAISO MPD MM Last Revised November 29 2007 11 DRAFT Demand Response Participation in MRTU Release 1 seven 15 minute intervals to ensure there is sufficient Capacity to meet the Demand e Commits and de commits Short Start and Fast Start Units e Procures additional AS Real Time Economic Executes every 5 minutes to meet the Imbalance RTED Dispatch Energy requirement Since the CAISO generates new loa
19. orecast submitted by the Demand Response Providers as described in Section 2 2 above The RUC Procurement Target will be adjusted based on the MW quantity of forecasted DR submitted to the CAISO The accounted for Demand Response will allow the CAISO to adjust the RUC procurement target downwards resulting in less RUC procurement The CAISO must receive the Demand Response forecast by no later than10 00 a m the Day Ahead in order to adjust the RUC CAISO MPD MM Last Revised November 29 2007 10 DRAFT Demand Response Participation in MRTU Release 1 Procurement Target As described in Section 2 4 below if the Demand Response forecast is received after 10 00 a m only the CFCD for the Real Time market will be adjusted for each hour the program is forecasted to be initiated Any changes to the RUC Procurement Target and reasons for the change will be logged by the CAISO Operator and communicated to the market in the form of a report that will be posted on the CAISO website It is still to be determined the format of the report and how often it will be posted This guide will be updated with more detailed information when it becomes available 2 4 Accounting for Demand Response in the Real Time Market Unit Commitment Processes The Real Time Market RTM consists of three processes working together STUC RTUC and RTED Since non participating load bids are not accepted into the RTM the RTM and its processes use the CAISO F
20. r 29 2007 17 DRAFT Demand Response Participation in MRTU Release 1 load reduction cost and a multi segment load energy bid Under this full dispatchable demand resource model the Participating Load will have the opportunity to participate directly in the Day Ahead energy market RUC Non Spinning Reserve and the Real Time Imbalance Energy Market For more information on future enhancements associated with Demand Response please refer to most recent Draft Straw Proposal entitled Post Release 1 MRTU Functionality for Demand Response posted on the CAISO website at the following link http www caiso com 1c91 1c919e0e1 1c30 pdf 8 References Other documents that provide background or additional detail directly related to the CAISO Demand Response Resource User Guide are e BPM for Market Operations e 5 Year Market Initiatives Road Map e Residual Unit Commitment Zones under MRTU e Issue Paper Post Release 1 MRTU Functionality for Demand Response e CAISO Operating Procedure No E 511 e The Market 201 Training Workbook 8 1 CAISO Contacts Please contact Margaret Miller at mmiller caiso com or 916 608 7028 or John Goodin at jgoodin caiso com or 916 608 7154 with questions or comments on the Demand Response Resource User Guide 9 Glossary of Terms Some but not all of the terms provided herein are defined terms in the CAISO Tariff These tariff defined terms have been flagged with a T Other terms have been def
21. s are embedded in the RUC procurement target which is based on the CAISO Forecast of CAISO Demand CFCD and are established prior to the RUC run The RUC procurement target is based on the difference between CFCD and the IFM Energy Schedule for each Trading Hour of the next Trading Day The RUC process determines any incremental unit commitments and procures capacity from RUC Availability Bids to meet the RUC procurement target Capacity selected in this process is awarded RUC Availability and is required to be bid in and made available to the Real Time Market CAISO MPD MM Last Revised November 29 2007 9 DRAFT Demand Response Participation in MRTU Release 1 The RUC procurement target is manually configurable by the CAISO operator and may be adjusted up or down based on various requirements Please see the BPM for Market Operations section 6 7 2 for a description of situations where the RUC procurement target may be adjusted up or down by the CAISO operator The BPM for Market Operations may be accessed at the following link http www caiso com 1c0f 1cOfec1830fa0 doc Figure 1 CAISO Day Ahead Market Processes Market Processes DAM Processes Publish Results Since Demand Resources other than Participating Load will not explicitly participate in the market in MRTU Release 1 the CAISO will manually adjust the RUC procurement target by adjusting the CFCD in the relevant RUC Zone based on the Day Ahead Demand Response F
22. t any significant variances Demand Response providers will send an update to the CAISO and note the date of the revision in the template At the end of the calendar year Demand Response Providers will re calculate and send final data for all programs by event date for the entire year to the CAISO using the same DR Program Results spreadsheet The goal is for the data reported to the CAISO on DR Results to be consistent with what is reported to the CPUC and other regulatory agencies Sample of DR Program Results Spreadsheet Demand Response Provider Load Curtailment Inc Programs Demand Bidding Program 6 7 2007 Day Ahead Critical Peak Pricing Program 6 7 2007 Day Ahead Capacity Bidding Program Third Party Contract 16 40 2 25 4 325 81 3 4 86 6 12 2007 Emergency ISO Stage 2 CAISO MPD MM Last Revised November 29 2007 16 DRAFT Demand Response Participation in MRTU Release 1 Please see Attachment C for the DR Program Results spreadsheet 6 Reporting DR Results to the Market The CAISO proposes to publish the Demand Response results annually at the end of the calendar year after receiving the final DR results from providers The report would include the hourly DR forecasts the MW reduced from the CAISO Forecast CFCD if applicable and the final DR results As Demand Response resources continue to play a larger role directly in the CAISO markets this report will be
23. triggered This section also applies to Day Of DR programs when they are called the Day Ahead 2 1 Process for Day Ahead Programs The following sections describe in detail the process for how Day Ahead Demand Response Programs will participate and be accounted for in the CAISO markets for MRTU Release 1 The overall process is shown graphically below Each box that represents a process is explained in detail in the sections that follow Other models for how demand response resources are delivered to the CAISO may evolve with time e g the Curtailment Service Provider model used in some eastern ISOs however no changes to the Scheduling Coordinator model are contemplated at this juncture given regulatory policy settlement and technical barriers that must first be addressed CAISO MPD MM Last Revised November 29 2007 6 DRAFT Demand Response Participation in MRTU Release 1 Process Overview Day Ahead Programs CAISO operations adjusts RUC procurement target DR Provider submits hourly DR Forecast to the CAISO by 10 00 a m the Day Ahead based on DR forecast CAISO Operator DR Provider sends initial DR adjusts CFCD in results to CAISO no more real time for the than 7 days following the followina trade dav trade dav DR Provider sends final DR results to CAISO by end of calendar year CAISO reports DR results to the market on an annual basis 2 2 Submission of Demand Response DR Forecast Since
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