PROCEDURE. Part 4.3: Real-Time Scheduling of the Physical Markets PUBLIC. Market Manual 4: Market Operations. Issue 54.

Transcription

1 PUBLIC IMP_PRO_0034 PROCEDURE Market Manual 4: Market Operatins Part 4.3: Real-Time Scheduling f the Physical Markets Issue 54.0 This prcedure prvides guidance t Market Participants n the Real-time scheduling prcess in the IESO-administered physical markets. Public

2 Disclaimer The psting f dcuments n this website is dne fr the cnvenience f market participants and ther interested visitrs t the IESO website. Please be advised that, while the IESO attempts t have all psted dcuments cnfrm t the riginal, changes can result frm the riginal, including changes resulting frm the prgrams used t frmat the dcuments fr psting n the website as well as frm the prgrams used by the viewer t dwnlad and read the dcuments. The IESO makes n representatin r warranty, express r implied, that the dcuments n this website are exact reprductins f the riginal dcuments listed. In additin, the dcuments and infrmatin psted n this website are subject t change. The IESO may revise, withdraw r make final these materials at any time at its sle discretin withut further ntice. It is slely yur respnsibility t ensure that yu are using up-t-date dcuments and infrmatin. This market manual may cntain a summary f a particular market rule. Where prvided, the summary has been used because f the length f the market rule itself. The reader shuld be aware, hwever, that where a market rule is applicable, the bligatin that needs t be met is as stated in the Market Rules. T the extent f any discrepancy r incnsistency between the prvisins f a particular market rule and the summary, the prvisin f the market rule shall gvern. Dcument ID IMP_PRO_0034 Dcument Name Part 4.3: Real-Time Scheduling f the Physical Markets Issue Issue 54.0 Reasn fr Issue Issue released in advance f Baseline 40.1 Effective Date Nvember 14, 2018

3 Dcument Change Histry Dcument Change Histry Issue Reasn fr Issue Date Fr histry prir t 2011, refer t versin 40.0 Fr histry prir t December 2014, refer t versins 50.0 and prir 40.0 Issue released in advance f Baseline 33.0 December 8, Issue released fr Baseline 33.0 March 4, Issue released fr Baseline 33.1 June 3, Issue released fr Baseline 34.0 September 9, Issue released fr Baseline 34.1 December 2, Issue released fr Baseline 35.0 March 2, Issue released in advance f Baseline 36.0 June 21, Issue released in advance f Baseline 36.1 Octber 26, Issue released in advance f Baseline 36.1 December 1, Issue released fr Baseline 37.0 March 1, Issue released fr Baseline 37.1 June 7, Issue released in advance f Baseline 38.0 August 1, Issue released fr Baseline 38.0 September 13, Issue released fr Baseline 38.1 December 6, Issue released in advance f Baseline 40.1 Nvember 14, 2018 Related Dcuments Dcument ID MDP_PRO_0027 PRO-324 Dcument Title Market Manual 4.2: Submissin f Dispatch Data in the Real-Time Energy and Operating Reserve Markets Market Manual 4.6: Real-Time Generatin Cst Guarantee Prgram Issue 54.0 Nvember 14, 2018 Public

4 Table f Cntents Table f Cntents Table f Cntents... i List f Figures... iii List f Tables... iii Table f Changes... iv Market Manuals... 1 Market Prcedures Intrductin Purpse Scpe Rles and Respnsibilities Cntact Infrmatin Participant Wrkstatin and Dispatch Wrkstatin Determining Real-Time Schedules Determining Market Infrmatin Releasing Real-Time and Market Infrmatin Publicatin f Real-Time Schedule Infrmatin Registered Facilities (ther than bundary entities and HDR resurces) Hurly Demand Respnse (HDR) Resurces Bundary Entities All Market Participants Publicatin f Real-Time Dispatch Infrmatin Determining Dispatch Instructins Registered Facilities (ther than HDR resurces and bundary entities) Hurly Demand Respnse (HDR) Resurces Bundary Entities Intertie Scheduling Prtcls IESO/NYISO Prtcl: NY Issue 54.0 Nvember 14, 2018 Public i

5 Table f Cntents Curtailed and Failed Interchange Schedules IESO/MISO Prtcl: MISO Prtcl IESO/Hydr-Quebec: Capacity Agreements Pre-Emptive Curtailments Transactin Cding Principles f Cding Methdlgy fr Failure Cde Applicatin Capacity Exprt Scheduling and Curtailment Capacity Exprt Delivery Curtailment Prvisins Issuing Dispatch Instructins Registered Facilities (ther than HDR resurces and bundary entities) Hurly Demand Respnse Resurces Dispatch Instructins fr HDR Resurces Bundary Entities Dispatch Instructins fr Bundary Entities Dispatch f Operating Reserve (OR) Manual Prcurement f Operating Reserve during frced r planned tls utages Cmpliance with Dispatch Instructins Generatin Units Turnarund Time Issuing Dispatch Advisries Registered Facilities (ther than HDR resurces and bundary entities) Bundary Entities and HDR Resurces Cmpliance with Dispatch Advisries Administrative Pricing Cmpliance Aggregatin Appendix A: Administrative Guidelines References Issue 54.0 Nvember 14, 2018 Public ii

6 List f Figures List f Figures Figure 6-1: IESO - NYISO Scheduling Prtcl Figure A-1: Cpy Frward Scenari Figure A-2: Cpy Backward Scenari Figure A-3: Cpy Frward and Backward Scenari List f Tables Table 6-1: Applicatin f Interchange Schedule Cdes Table 7-1: Prcedural Steps fr Dispatch Instructins fr Registered Facilities (ther than HDR resurces and bundary entities) Table 7-2: Prcedural Steps fr Dispatch Instructins fr HDR Resurces Table 7-3: Prcedural Steps fr Bundary Entity Dispatch Instructins Issue 54.0 Nvember 14, 2018 Public iii

7 Table f Changes Table f Changes Reference (Paragraph and Sectin) Sectin Sectin 6.7 Descriptin f Change Remved ld Capacity-Backed Exprts sectin, as the cntent is n lnger relevant. Added new Capacity Exprts sectin. Issue 54.0 Nvember 14, 2018 Public iv

8 Market Manuals Market Manuals The Market Manuals cnslidate the market prcedures and assciated frms, standards, and plicies that define certain elements relating t the peratin f the IESO-administered markets. Market prcedures prvide mre detailed descriptins f the requirements fr varius activities than is specified in the Market Rules. Where there is a discrepancy between the requirements in a dcument within a Market Manual and the Market Rules, the Market Rules shall prevail. Standards and plicies appended t, r referenced in, these prcedures prvide a supprting framewrk. Market Prcedures The Market Operatins Manual is Series 4 f the Market Manuals, where this dcument frms Part 4.3: Real-Time Scheduling f the Physical Markets. End f Sectin Issue 54.0 Nvember 14, 2018 Public 1

9 1. Intrductin 1. Intrductin 1.1 Purpse This dcument prvides market participants with the infrmatin necessary t supprt the real-time schedule fr the physical markets. The IESO determines dispatch instructins fr each registered facility 1 and bundary entity as described in this prcedure, as the primary means f crdinating the real-time peratin f the physical markets. This prcedure addresses: The release f the real-time schedule t registered market participants that relates t their registered facilities and bundary entities, The release f general real-time schedule t all market participants, The determinatin and issuance f dispatch instructins fr bundary entities, in the frm f interchange schedules t cntrl area peratrs, The determinatin and issuance f dispatch instructins fr registered facilities t registered market participants by the IESO, and The determinatin and issuance f standby and activatin ntices fr hurly demand respnse (HDR) resurces, in the frm f standby and activatin reprts. 1.2 Scpe This market manual is intended t prvide market participants with a summary f the steps and interfaces between market participants, the IESO, and ther parties during the prcess fr determining the real-time schedule fr the physical markets. The prcedural wrkflws and steps described in this dcument serve as a radmap fr market participants and the IESO, and reflect the requirements set ut in the market rules and applicable IESO plicies and standards. This prcedure nly addresses the prcess fr determining the real-time schedule. This prcedure des nt address the pre-dispatch prcess 2 that prvides inputs int the prcess fr determining the real-time schedule. The IESO endeavurs t ensure that the crrect inputs are prvided t the dispatch algrithm 3 that calculates the security-cnstrained ecnmic dispatch (i.e., the real-time schedule f energy and perating reserve). The IESO undertakes regular security and adequacy assessments: 1 Facilities that are registered with the IESO as bundary entities t imprt r exprt electricity are referred t as bundary entities in this prcedure. The term registered facility is used t describe thse facilities within Ontari that have been registered by market participants with the IESO. 2 Fr mre infrmatin n the pre-dispatch prcess, see Market Manual 4.2: Submissin f Dispatch Data fr the Real-Time Energy and Operating Reserve Markets. Issue 54.0 Nvember 14, 2018 Public 2

10 1. Intrductin T identify events that are likely t ccur and adjust the inputs t the Dispatch Scheduling and Optimizatin (DSO) tl s that the resultant set f dispatch instructins ensure the security and adequacy f the IESO-cntrlled grid, and T identify events that have ccurred t which the rutine dispatch prcess will be unable t respnd in a manner that cntinues t ensure the reliability f the IESO-cntrlled grid. In such situatins, the IESO may alter the inputs t the DSO and/r intervene in the rutine dispatch prcess by manually altering the dispatch instructins t ensure reliability. In sme extreme cases, the IESO may have t suspend nrmal market peratins Rles and Respnsibilities Respnsibility fr establishing the real-time schedule in the physical markets is shared amng: Registered Market Participants having dispatchable generatin r lad facilities that are respnsible fr: Accepting r rejecting dispatch instructins r release ntificatins issued by the IESO, Fllwing accepted dispatch instructins, and Ntifying the IESO as sn as pssible f circumstances that will result in its facility nt fllwing its dispatch instructins t an extent that is material (as defined in Market Manual 4.2, Appendix C). Registered Market Participants having HDR resurces that are respnsible fr: Mnitring standby reprts t determine if a standby ntice is received, Fllwing dispatch instructins in the frm f activatin ntices, and Ntifying the IESO as sn as pssible f circumstances that will result in its facility nt fllwing its dispatch instructins t an extent that is material (as defined in Market Manual 4.2, Appendix C). Registered Market Participants having bundary entities that are respnsible fr: Revising and re-submitting dispatch data fr bundary entities when quantities scheduled fr thse transactins by ther cntrl areas are less than the quantity ffered r bid int the Ontari market, Creating and submitting e-tags fr their interchange transactins, Viewing their interchange schedules published by the IESO t the market participant Interface r verbally cnfirming interchange schedules fr a bundary entity with the IESO where the interchange schedule differs frm the published schedule, Revising and resubmitting e-tags when interchange schedule quantities differ frm the quantity prvided n the e-tag, and 3 The dispatch algrithm is run thrugh the Dispatch Scheduling and Optimizatin (DSO) tl perated by the IESO. 4 The prcess f market suspensin is set ut in Market Manual 4.5: Market Suspensin and Resumptin. Issue 54.0 Nvember 14, 2018 Public 3

11 1. Intrductin Cancelling e-tags submitted fr linked 5 wheeling thrugh transactins whse imprt and/r exprt cmpnent did nt get scheduled fr the dispatch hur. Cntrl Area peratrs in areas adjacent t the Ontari cntrl area wh are respnsible fr cnfirming r rejecting the feasibility f interchange schedules prvided by the IESO, and The IESO which is respnsible fr: Releasing real-time schedule infrmatin, market schedule infrmatin, market prices and related peratinal infrmatin t registered market participants, Publishing dispatch instructins fr market participants with bundary entities in the frm f interchange schedules, Identifying and remving frm schedule linked wheeling thrugh interchange schedules whse imprt and/r exprt cmpnent did nt get scheduled fr the dispatch hur. Issuing and cnfirming dispatch instructins verbally t market participants with bundary entities where the interchange schedule is different frm the published schedule, Issuing dispatch instructins t registered facilities that are nt bundary entities, Issuing dispatch advisries, n a reasnable effrts basis, t registered facilities that are nt bundary entities, as per Market Rule Chapter 7, Sectin (MR Ch. 7 Sec ). Identifying circumstances where emergency actins are required t maintain the reliability f the IESO-cntrlled grid, Infrming market participants, as sn as practicable, whenever a published market price is an administrative price. 1.4 Cntact Infrmatin Changes t this public market manual are managed via the IESO Change Management prcess. Stakehlders are encuraged t participate in the evlutin f this market manual via this prcess. T cntact the IESO, yu can IESO Custmer Relatins at custmer.relatins@ies.ca r use telephne r mail. Telephne numbers and the mailing address can be fund n the IESO website ( Custmer Relatins staff will respnd as sn as pssible. End f Sectin 5 Linked wheeling transactins are described in Market Manual 4.2, Sectin Issue 54.0 Nvember 14, 2018 Public 4

12 2. Participant Wrkstatin and Dispatch Wrkstatin 2. Participant Wrkstatin and Dispatch Wrkstatin Market participants are required t perate a participant wrkstatin and a dispatch wrkstatin fr the purpses f supprting the prcess f determining the real-time schedule. The participant wrkstatin is cnnected t the Participant Netwrk. Market participants submit bids and ffers t the IESO via the participant wrkstatin, as described in Market Manual 4.2. Valid bids and ffers are then passed t the IESO s Market Interface System (MIS) fr the purpses f determining the real-time schedule. Dispatch instructins fr bundary entities, in the frm f the interchange schedule, are published via the Market Participant Interface, a cmpnent f the participant wrkstatin. The dispatch wrkstatin is cnnected t the Real-Time Netwrk, which supprts real-time peratin f the pwer system. Dispatch instructins fr registered facilities are submitted t market participants via their dispatch wrkstatin. Fr mre infrmatin n the system and sftware requirements fr the participant wrkstatin and the dispatch wrkstatin, refer t Market Manual 6: Participant Technical Reference Manual. End f Sectin Issue 54.0 Nvember 14, 2018 Public 5

13 3. Determining Real-Time Schedules 3. Determining Real-Time Schedules The IESO uses a range f infrmatin t determine the real-time schedules, including: Dispatch data submitted by registered market participants, The registered generatin facility's maximum ramp rate frm the IESO Registratin Slutin, The registered generatin facility's minimum lading pint frm the IESO Registratin Slutin (MR Ch. 7 Sec A), and The fllwing registered generatin facility's characteristics frm the IESO Registratin Slutin (MR Ch. 7 Sec A), Frbidden regin data, and Perid f steady peratin data. A default value f zer fr the minimum lading pint, frbidden regin and perid f steady peratin if nne has been registered with the IESO with respect t this infrmatin. Predictins f lad fr the next sixty-minutes, calculated autmatically 6 every five-minutes, Generatr and transmitter utage infrmatin prvided by market participants, Transfer limits fr intercnnected interties, Ttal perating reserve requirements (10-minute spinning, 10-minute nn-spinning, 30- minute) determined by the IESO, Lcal area reserve requirements (if any), determined by the IESO, Operating security and thermal limits n transmissin facilities, Scheduled interchange fr the hur, calculated by the last pre-dispatch run f the DSO 7, The utput level f each generatr and the withdrawal levels f each dispatchable lad and HDR resurce at the beginning f the dispatch interval are set at the IESO s best estimate f their actual values, as determined frm real-time system data and the real-time schedule fr the preceding dispatch interval, Variable generatin five-minute supply frecast, and Such ther available infrmatin as the IESO determines apprpriate. 6 At the discretin f the IESO, we may manually adjust the Ontari demand frecast t accunt fr limitatins f ur autmated lad predictr t accurately frecast expected lad prfiles. 7 The DSO is run with a ne-hur time-step in pre-dispatch mde fr all the remaining hurs f tday and, frm 16:00 EST n, fr all the hurs f tmrrw. Interchange scheduled by the DSO fr the next hur is cnfirmed with adjacent cntrl areas and ramped at r near the tp f the hur. Scheduled interchange fr the hur is prvided as an input t the real-time DSO t calculate the five-minute dispatch instructins fr internal Ontari resurces. Issue 54.0 Nvember 14, 2018 Public 6

14 3. Determining Real-Time Schedules The IESO uses this infrmatin and the dispatch algrithm 8 t determine a security-cnstrained ecnmic dispatch schedule fr each five-minute dispatch interval and t determine anticipated schedules fr a number f advisry intervals within the study perid. Daily energy limits are nt taken int accunt in determining real-time schedules. The real-time cnstrained dispatch schedule, nly, utilizes a tw-step ptimizatin technique t determine a security-cnstrained ecnmic dispatch schedule fr a number f critical intervals ver a frward-lking study perid. Fr each real-time cnstrained dispatch schedule, critical intervals are selected by the IESO frm the study perid based n selectin criteria defined in the Multi- Interval Optimizatin Functinal Requirements dcument. There are currently up t 11 critical intervals selected within a study perid f 55 minutes. The first critical interval is always the dispatch interval, and the remaining critical intervals are advisry intervals. Bth the length f the study perid and the number f advisry intervals are cnfigurable and may be changed by the IESO in the event f significant imprvement r degradatin f either cmputer sftware and hardware perfrmance r the accuracy f predicted demand values (MR Ch.7, App. 7.5, Sec ). In the event f a malfunctin f the multi-interval ptimizatin algrithm the IESO may switch t single interval ptimizatin. During such perids new dispatch advisry reprts will nt be issued. The IESO will issue a system message t ntify market participants whenever single interval ptimizatin is being used. It shuld be nted that the dispatch advisry reprts issued t registered dispatchable market participants nly include the schedules fr the advisry intervals and nt fr the dispatch interval. The IESO will review the utput frm the dispatch algrithm and may manually adjust the real-time schedule t reflect cntrl actins that are required t address events that the IESO assesses: Will have a material impact n the IESO-cntrlled grid, and Occur in a timeframe in which the dispatch algrithm and market mechanisms cannt respnd. Such events may include: Unplanned utages f facilities, Rapid changes t security limits, Unexpected demand changes, Limitatins f the lad predictr t accurately frecast Ontari demand fr the next interval, Area reserve inadequacies, Vltage prblems, r Variable generatin ramp events. T reslve such prblems, the IESO may intervene in the rutine dispatch prcess, where the IESO judges that such interventin is viable. In such situatins, the IESO will manually adjust the dispatch instructins that result frm the real-time schedule generated thrugh the dispatch algrithm and 8 The real-time DSO uses the cnstrained IESO-cntrlled grid mdel. Issue 54.0 Nvember 14, 2018 Public 7

15 3. Determining Real-Time Schedules issue these adjusted dispatch instructins. Where an assessment determines that such interventin is nt viable, the IESO will suspend nrmal market peratins (see Market Manual 4.5: Market Suspensin and Resumptin). End f Sectin Issue 54.0 Nvember 14, 2018 Public 8

16 4. Determining Market Infrmatin 4. Determining Market Infrmatin Within five minutes fllwing the end f each dispatch interval, the IESO uses the dispatch algrithm t determine the market schedule and the market prices fr that dispatch interval. Fr the purpse f determining the market schedule and market prices fr any dispatch interval, the IESO uses the same infrmatin and data that was used t determine the real-time schedule fr that dispatch interval, except that (MR Ch. 7, Sec. 6.4): Nte: The uncnstrained IESO-cntrlled grid mdel is used, The initial cnditins used fr any dispatch interval in the market schedule are the final cnditins f the market schedule fr the preceding dispatch interval, The ttal demand (including lsses) t be satisfied within a dispatch interval in the market schedule are set at the IESO s best estimate f its actual value, as determined frm real-time system data, Ttal system energy lsses determined in the real-time schedule are represented as an increase in nn-dispatchable lad within the IESO cntrl area, Any registered facility in respect f which a frced utage has been detected during a dispatch interval are recgnized by an adjustment t the input data, The estimated deviatins between scheduled quantities and actual quantities are represented as a change in nn-dispatchable lad in the IESO cntrl area 9, The market schedule reflects dispatch adjustments 10 cmputed using scheduled injectins frm the cnstrained schedule, utlined in MR Ch. 7, App 7.5, and The demand in the market schedule will be adjusted when the IESO initiates a vltage reductin (3% r 5%) and/r nn-dispatchable lad cuts (rtatinal, emergency r manual lad shedding), by an amunt expected t ffset the impact f the cntrl actin (MR Ch. 7 Sec ). When the IESO undertakes an emergency cntrl actin cnsisting f a vltage reductin and/r nn-dispatchable lad cuts fr lcal r glbal reasns, the IESO will adjust the demand in the market schedule as sn as practical, cnsidering the nature f the perating cnditins at the time, by an amunt expected t ffset the impact f the cntrl actin. The IESO will nt cnsider any actin resulting in a demand reductin f 50 MW r less as a cntrl actin fr the purpses f this manual. End f Sectin 9 Until such time that lcatinal pricing is implemented in the IESO-administered markets, in determining the market schedule and market prices fr any dispatch interval, the IESO shall nt have regard t the estimated deviatins between scheduled quantities and actual quantities. 10 These dispatch adjustments will nt be cnsidered in determining the market schedule and market prices fr any dispatch interval until the date indicated in the previus ftnte. Issue 54.0 Nvember 14, 2018 Public 9

17 5. Releasing Real-Time and Market Infrmatin 5. Releasing Real-Time and Market Infrmatin 5.1 Publicatin f Real-Time Schedule Infrmatin The IESO releases infrmatin in supprt f the real-time dispatch prcess, including real-time schedules, market schedules and market prices. Infrmatin relating t specific registered facilities, HDR resurces, and bundary entities is released t the registered market participant fr that facility. Other infrmatin relating t the general status f the system is released t all market participants Registered Facilities (ther than bundary entities and HDR resurces) As sn as practical but n later than the start f the dispatch interval t which it relates, fr each registered facility that is a dispatchable lad r a dispatchable generatr in respect f which market participant bid r ffer has been submitted fr the applicable dispatch hur, the IESO releases the fllwing infrmatin t the registered market participant fr the facility: The real-time schedule fr that registered facility, The dispatch advisries fr that registered facility (MR Ch. 7, Sec ), and The bligatin indicatr fr any registered facility that is a variable generatr. The dispatch advisry will be issued n a reasnable effrt basis and missed dispatch advisries will nt be re-issued. Within ne hur after each dispatch hur, fr each registered facility that is a dispatchable lad r a dispatchable generatr in respect f which a valid bid r ffer has been submitted fr the applicable dispatch hur, the IESO releases the market schedule 11 fr each dispatch interval in the dispatch hur t the registered market participant. Additinally, the IESO shall publish n the IESO website: The standing ffer prices and quantities fr cntrl actin surces f perating reserve as determined by the IESO Bard (MR Ch. 5, Sec A.2), and The times and quantities f the vltage reductins and reductin in thirty-minute perating reserve when these cntrl actin surces f perating reserve are scheduled t prvide perating reserve (MR Ch. 5, Sec A.4). Als, the IESO Bard may specify the circumstances under which any ne r mre f the quantities may either be withdrawn r nt intrduced, and the manner in which any such withdrawal will be effected and the publishing theref (MR Ch.5, Sec A.3). 11 This bligatin is subject t the prvisins f MR Ch. 7 Sec Issue 54.0 Nvember 14, 2018 Public 10

18 5. Releasing Real-Time and Market Infrmatin Hurly Demand Respnse (HDR) Resurces The IESO releases the pre-dispatch schedule fr each registered facility that is an HDR resurce as sn as practical, but n later than the start f the dispatch hur t which it relates 12 (cnsistent with relevant reliability standards). The IESO releases dispatch instructins, in the frm f an activatin ntice t the demand respnse market participant (DRMP) fr each registered facility that is an HDR resurce Bundary Entities As sn as practical and cnsistent with relevant reliability standards, but n later than the start f the dispatch hur t which it relates 13, fr each registered facility that is a bundary entity in respect f which the dispatch instructins fr a given dispatch hur prvides fr the dispatch f mre than 0 MW, the IESO releases the fllwing infrmatin t the relevant market participant: The interchange schedule fr that registered facility, as fund in the relevant pre-dispatch schedule, Any request f that registered facility t submit an ffer r bid under a reliability must-run cntract and the scheduled use f that registered facility under reliability must-run cntracts and cntracted ancillary services cntracts, and The prjected market schedule fr that registered facility All Market Participants In the five-minute perid after the end f each dispatch interval, the IESO releases t all market participants the unifrm market prices f energy and perating reserves related t that dispatch interval. Within ne hur after the end f the dispatch hur, the IESO releases t all market participants the fllwing infrmatin fr each dispatch interval f that dispatch hur: Ttal system lad and ttal system lsses, Area perating reserve requirements, Fr infrmatin purpses nly, energy prices at each set f transmissin ndes identified by the IESO fr this purpse, decmpsed as far as practical int an energy cmpnent, a lss cmpnent and a cmpnent fr all ther transmissin and system cnstraints and the prices f each class f perating reserve in each reserve area identified by the IESO fr this purpse, Aggregate reliability must-run resurces called upn, Any area perating reserve shrtfalls, and 12 Typically, this will be at least 2 hurs and 30 minutes prir t the start f the dispatch hur due t the scheduling requirements f HDR resurces. 13 Typically, this will be at least 30 minutes prir t the start f the dispatch hur due t the requirements t prvide e-tags at least 20 minutes prir t the start f the dispatch hur. Issue 54.0 Nvember 14, 2018 Public 11

19 5. Releasing Real-Time and Market Infrmatin A list f netwrk and security cnstraints that affected the real-time schedule. The IESO als releases the market schedules fr all dispatch intervals in the preceding dispatch hur t the registered market participant, fr each registered facility. In the event f a lad curtailment, the IESO will release t all market participants an estimate f aggregate lad curtailed as sn as practicable fllwing the return t a nrmal perating state. 5.2 Publicatin f Real-Time Dispatch Infrmatin Within ne hur after the end f each dispatch hur, the IESO publishes infrmatin regarding the system results and events that ccurred during that dispatch hur. This infrmatin includes: Ttal lad met, Transmissin capacity between the IESO-cntrlled grid and each intertie zne, Any utages f transmissin facilities, Ttal perating reserve scheduled, and ttal energy called frm such perating reserve, by area, The market prices fr each dispatch interval, and The unifrm Hurly Ontari Energy Price (HOEP). End f Sectin Issue 54.0 Nvember 14, 2018 Public 12

20 6. Determining Dispatch Instructins 6. Determining Dispatch Instructins 6.1 Registered Facilities (ther than HDR resurces and bundary entities) The IESO will seek t ensure that the dispatch instructins issued with respect t each registered facility, ther than a bundary entity r HDR resurce, clsely apprximate the mst recent realtime schedule fr that registered facility and dispatch interval and are within capabilities f the facility as registered with the IESO. The IESO may, hwever, issue dispatch instructins that depart frm the real-time schedule prduced by the DSO if: The security and adequacy f the system wuld be endangered by implementing the mst recent real-time schedule, The dispatch algrithm has failed, r has prduced a real-time schedule that is clearly and materially in errr, The dispatch algrithm has prduced a real-time schedule that des nt accurately reflect the minimum run-time r lckut 14 status f a facility due t dispatch algrithm limitatins, Material changes subsequent t determinatin f the mst recent real-time schedule, such as failure f an element f a transmissin system r failure f a registered facility t fllw dispatch instructins, have ccurred, r The peratin f all r part f the IESO-administered markets has been suspended 15 (refer t Market Manual 4.5: Market Suspensin and Resumptin). Having prduced the real-time schedule, an under generatin cnditin may prevail. In such circumstances, the IESO will declare an emergency perating state if bservance f security limits under a nrmal perating state will require curtailment f nn-dispatchable lad. The IESO will implement demand management and/r lad shedding activities 16, as detailed in the Market Manual 7: Systems Operatins Overview 17, t reslve the situatin. 14 The dispatch algrithm des nt have the functinality t recgnize the perating status f sme facilities nce they cmplete dispatch instructins. This is illustrated in, but nt limited t, the fllwing examples: The dispatch algrithm des nt recgnize that, nce sme quick start facilities synchrnize, they must remain in service at r abve a minimum lading pint fr a minimum run-time. The dispatch algrithm des nt recgnize that, nce sme facilities change their dispatch level, they are lcked ut and cannt change dispatch frm that level fr a specified perid f time. 15 This may ccur as a result f ne f the preceding bullets. 16 Implementatin f manual lad shedding shuld be preceded by a declaratin f an Emergency Operating State. 17 In general, under generatin situatins shuld nt appear unexpectedly. In mst cases, under generatin situatins shuld be evident in advance via the Adequacy Reprt up t 34 days ut. These situatins may als be identified in an advisry ntice which may include a Maximum Generatin Alert, r the utputs f the pre-dispatch run. Cntrl actins t address under generatin in these timeframes can include issuance f a Issue 54.0 Nvember 14, 2018 Public 13

21 6. Determining Dispatch Instructins 6.2 Hurly Demand Respnse (HDR) Resurces The IESO will seek t ensure that the dispatch instructins in the frm f an activatin ntice, issued with respect t each registered facility that is an HDR resurce fr each dispatch hur reflect the pre-dispatch schedule 18 used fr scheduling that dispatch hur. The IESO may, hwever, issue dispatch instructins that depart frm the pre-dispatch schedule if: The security and adequacy f the system (internally r externally) wuld be endangered by implementing the pre-dispatch schedule, The dispatch algrithm has failed, r has prduced a pre-dispatch schedule that is clearly and materially in errr, Material changes subsequent t determinatin f the pre-dispatch schedule, such as failure f an element f a transmissin system r failure f a registered facility t fllw dispatch instructins, have ccurred, r The peratin f all r part f the IESO-administered markets has been suspended. Refer t Market Manual 4.5 fr mre details n this situatin. 6.3 Bundary Entities The IESO will seek t ensure that the dispatch instructins issued with respect t each registered facility that is a bundary entity fr each dispatch hur reflect the pre-dispatch schedule used fr scheduling that dispatch hur. The IESO may, hwever, issue dispatch instructins that depart frm the pre-dispatch schedule if: The security and adequacy f the system (internally r externally) wuld be endangered by implementing the pre-dispatch schedule, The dispatch algrithm has failed, r has prduced a pre-dispatch schedule that is clearly and materially in errr, The dispatch algrithm has prduced a real-time schedule that des nt accurately reflect the minimum run-time r lckut 19 status f a facility due t dispatch algrithm limitatins, Material changes subsequent t determinatin f the pre-dispatch schedule, such as failure f an element f a transmissin system r failure f a registered facility t fllw dispatch instructins, have ccurred, In the event f a shrtfall in energy r perating reserve, the utput f a resurce assciated with a capacity exprt is insufficient t supprt the full exprt, System Advisry fr under generatin, sliciting ffers fr generatin and rejecting, revking, r recalling utages. 18 Fr HDR resurces, the pre-dispatch run ccurring three hurs in advance f the dispatch hur will be used fr scheduling demand respnse during the availability windw f the dispatch day. A resurce will be scheduled fr fur cnsecutive hurs when the pre-dispatch schedule is less than the resurce s ttal bid quantity. 19 As defined in sectin 6.1. Issue 54.0 Nvember 14, 2018 Public 14

22 6. Determining Dispatch Instructins The peratin f all r part f the IESO-administered markets has been suspended. (Refer t Market Manual 4.5 fr mre details n this situatin.), A vilatin f the net interchange schedule limit has ccurred, Quebec has issued a reliability declaratin pursuant t the Amended & Restated IESO-Hydr Quebec Capacity Sharing Agreement, but the dispatch algrithm has failed t prduce a predispatch schedule in accrdance with the bligatins under the agreement (see Sectin 6.4), r An external jurisdictin has issued a capacity call, but the dispatch algrithm has failed t prduce a pre-dispatch schedule in accrdance with the capacity exprt bligatins (see Sectin 6.7). In additin, e-tags and/r interchange schedules fr bundary entities may be required t be changed fllwing IESO cnfirmatin f e-tags and interchange schedule with adjacent cntrl areas fr (e.g., as a result f a failure t successfully navigate the adjacent market). The sequence f this cnfirmatin is as fllws: The IESO validates e-tags and cnfirms the interchange schedules with the apprpriate cntrl areas, prir t five minutes t the start f the dispatch hur. Nte: The IESO remves interchange bids r ffers frm the schedule where e-tags are missing, late, invalid, and incrrect and/r cntrl area cnfirmatin fails, unless such interchange bids r ffers are required fr reliability reasns. Refer t Market Manual 4.2: Submissin f Dispatch Data in the Real-Time Energy and Operating Reserve Markets, Sectin 2.5. The IESO cnfirms the interchange schedule(s) MW quantities with the apprpriate cntrl areas and quantities are mdified prir t the start f the ramp, as necessary, t ensure viable interchange schedule(s). In the event f an interchange scheduling disagreement between cntrl areas, the lesser quantity shall prevail. Failure t agree t the lesser quantity will result in the interchange scheduling being reduced t 0 MW, and The IESO ntifies market participants f revised interchange schedule(s) MW quantities where quantities have been revised in discussin with ther cntrl areas. 6.4 Intertie Scheduling Prtcls IESO/NYISO Prtcl: NY90 In an effrt t ensure fair and efficient use f the IESO/NYISO interties, the IESO and the NYISO have agreed t fllw a specific interchange scheduling prtcl fr the exchange f interchange scheduling infrmatin (MR Ch. 7 Sec ). On July 29, 2002, the IESO and the New Yrk Independent System Operatr (NYISO) adpted a scheduling prtcl t effectively crdinate interchange scheduling between the tw jurisdictins. This interchange scheduling prtcl establishes a timeline that defines when certain interchange scheduling checkut activities ccur, bth within and between the tw rganizatins. Figure 6-1 illustrates this timeline. The IESO will be marking New Yrk interchange schedules with either the "NY90", MrNh, TLRe r "OTH" cde within the IESO systems t reflect schedule check-ut activities within the NYISO (see Issue 54.0 Nvember 14, 2018 Public 15

23 6. Determining Dispatch Instructins IESO-NYISO scheduling prtcl belw). This apprach will result in mre accurate and reliable predispatch schedules. IESO Pre-Dispatch / NYISO Day Ahead Perid IESO Hurly Pre-Dispatch / NYISO Balancing Market Evaluatin Perid IESO determines prjected interchange schedules fr the dispatch hur based n 2-hur ahead pre-dispatch run and passes them t NYISO IESO and NYISO cnfirm final interchange schedules IESO determines and psts first predispatch schedule Start f IESO 2-hur ahead pre-dispatch run T-113 T-75 T-60 T-30 Dispatch Hur 11:00 12:00 14:00 15:00 16:00 T-120 T-100 T-40 T=0 NYISO psts Day- Ahead interchange schedules NYISO passes Day- Ahead cmmitments (with pre-schedules identified) t the IESO NYISO filters BME bids using infrmatin n interchange schedules accepted by the IESO 2-hur ahead pre-dispatch NYISO hur ahead market clses Figure 6-1: IESO - NYISO Scheduling Prtcl NYISO runs BME and psts BME results Pre-Dispatch Perid (IESO) and Day-Ahead (NYISO) 11:00 hurs (EST) t 12:00 hurs 14:00 hurs t 15:00 hurs 16:00 EST The NYISO psts the Day-Ahead Market schedule NYISO calls and perfrms a cursry check n eligible marketers (imprters/exprters). The IESO psts initial pre-dispatch schedule fr the next 32 hurs. Hurly Pre-Dispatch Perid (IESO) / RTC (NYISO) T-100 minutes The IESO determines prjected interchange schedules fr the dispatch hur based n the 2-hur ahead pre-dispatch run, applies the NY90/Max cde t prjected interchange schedules and cmmunicates the infrmatin t the NYISO. T-100 minutes t T-75 minutes T-75 minutes t T-40 minutes The NYISO filters the hur ahead Real Time Cmmitment (RTC) interchange schedule bids that affect the IESO/NYISO interties t include nly thse interchange schedules with ffers/bids accepted by the IESO's 2-hur ahead pre-dispatch run. The NYISO runs the RTC, autmatically adjusting e-tags accrdingly based n the RTC results then ntifies the IESO f thse interchange schedules that have failed (in whle r part) 20 t navigate the NYISO market and psts the NYISO Hur-Ahead schedule 20 The NYISO identifies t the IESO thse interchange schedules nt scheduled and partially scheduled by RTC. Thse interchange schedules scheduled in part by RTC will be scheduled accrdingly. Thse interchange Issue 54.0 Nvember 14, 2018 Public 16

24 6. Determining Dispatch Instructins Hurly Pre-Dispatch Perid (IESO) / RTC (NYISO) T-30 minutes The IESO cnfirms final interchange schedules with the NYISO, making final adjustments t interchange schedules accrdingly and ntifies the market participant f the changes by autmated . The NYISO psts RTC results T-100 minutes t T-75 minutes Where required fr reliability reasns, the IESO may, in ecnmic merit, include interchange schedules frm the NYISO 2-hur ahead RTC evaluatin that failed the IESO 2-hur ahead pre-dispatch run, in the shrt list fr evaluatin in the final RTC evaluatin, r If necessary, in ecnmic merit, cnstrain n resurces irrespective f the IESO-NYISO scheduling prtcl. Revisins and/r additins t dispatch data within the tw hurs prir t the dispatch hur are restricted. The IESO may accept revisins and/r additins fr internal reliability reasns. Additinally, at the request f the NYISO, the IESO may allw revisins and/r additins during this timeframe if the changes facilitate a slutin t NYISO reliability cncerns. 21 IESO / NYISO interchange schedule implementatin is cnsistent with the NERC transactin ramping default f 10- minutes with the ramp straddling the tp f the dispatch hur Curtailed and Failed Interchange Schedules An interchange schedule that has been curtailed during the dispatch hur fr reliability reasns may be reinstated within that dispatch hur if the reliability cnditin causing the curtailment is reslved, and the curtailed interchange schedule(s) is scheduled in the next dispatch hur. At T-100 minutes, the prjected interchange schedules fr the dispatch hur based n the IESO's 2- hur ahead pre-dispatch run are cnsidered as at their maximum available fr the dispatch hur and are "capped" at that value in the cnstrained schedule using the cde NY90/Max 22. This "shrt list" is frwarded t NYISO fr RTC evaluatin. CMSC will apply as per the nrmal scheduling prcess, prvided the "capped" interchange schedule(s) clears the NYISO T-75 minutes. Where required fr reliability reasns, the IESO may, include in the shrt list fr evaluatin in the final NYISO RTC evaluatin, interchange schedules frm the NYISO 2-hur ahead RTC evaluatin that are the next mst ecnmically interchange schedule(s), which failed the IESO 2-hur ahead predispatch run. The NY90/Max cde is nt used fr such interchange schedules in the pre-dispatch perid when the additin t the shrt list includes a cmplete ffer (either the full quantity f the new interchange schedule r an existing interchange schedule MW is increased t the full quantity ffered). Hwever, CMSC r IOG will be applied as apprpriate if the interchange schedule is dispatched. The NY90/Max cde is used if the additin t the shrt list results in a selectin f a partial interchange schedule ffer. schedules nt scheduled will be remved by the IESO prir t the dispatch hur. In either case the interchange schedules will be failed and n CMSC payments will apply. 21 This wuld nt include calls fr capacity exprts 22 The schedule is re-evaluated in the 1-hur ahead pre-dispatch run, with the market schedule able t increase r decrease, but the cnstrained schedule nly able t decrease. Issue 54.0 Nvember 14, 2018 Public 17

25 6. Determining Dispatch Instructins At-T-30 minutes, interchange schedules that failed the NYISO RTC (all r in part) will be failed by the IESO using the cde OTH/Fix, unless failed as a result f external transmissin limitatin, in which case the TLRe cde will be applied. N CMSC payments will apply IESO/MISO Prtcl: MISO Prtcl In an effrt t facilitate the release f MISO transmissin and ramp the IESO has a unique scheduling prtcl fr all MISO transactins. At T-90, all e-tags fr transactins n the Michigan, Manitba r Minnesta interfaces will be reduced t their 2 hur ut pre-dispatch schedule. Subsequently, all transactins whse schedule increases frm 2 hurs ut t 1 hur ut will be re-laded t reflect their 1 hur ut pre-dispatch schedule IESO/Hydr-Quebec: Capacity Agreements The IESO and Hydr-Quebec have capacity agreements. Energy scheduled t satisfy the terms f the agreements will be n the PQ.OUTAOUAIS bundary entity. Delivery f firm energy under the agreements is measured as the net schedule n PQ.OUTAOUAIS regardless f the market participant respnsible fr the scheduled transactin (i.e., a Hydr Quebec energy transactin des nt have t be scheduled fr the sending entity t be meeting its energy bligatin, if ther transactins deliver an equivalent amunt f energy). Submissin f dispatch data fr transactins assciated with the agreements shall adhere t the existing timelines and requirements specified in Market Manual 4.2, Sectin 2.5. The determinatin f real-time schedules, market schedules, market prices, and dispatch instructins fr these transactins shall be in accrdance with this market manual, and as described belw. Winter Perid (December 1 t March 31) T call n Ontari capacity, Hydr Quebec TransÉnergie (HQT) shall issue a reliability declaratin t the IESO, and Hydr Quebec Energy Marketing (HQEM) shall submit an assciated energy exprt bid (HQEM exprt). An advisry ntice shall be issued ntifying market participants. This HQEM exprt will be scheduled by the dispatch algrithm using nrmal market mechanisms. T satisfy the terms f the capacity agreements, the IESO may take cntrl actins in the predispatch timeframe t increase the net schedule n PQ.OUTAOUAIS t the MW bid quantity f the HQEM exprt if: The HQEM exprt bid price is the maximum market clearing price (MMCP) The net schedule n PQ.OUTAOUAIS is less than the MW bid quantity f the HQEM exprt, and There is sufficient transmissin capacity n the interface. T satisfy the terms f the capacity agreements, the IESO may take cntrl actins in real-time t ensure delivery f energy exprts assciated with the capacity agreements that are scheduled in pre-dispatch. These cntrl actins will be made in accrdance with Market Manual 7.1: IESO-Cntrlled Grid Operating Prcedures, Appendix B.2: Emergency Operating State Cntrl Actins. Cnstrained-n exprts n PQ.OUTAOUAIS shall be applied n a reasnable effrt ecnmic basis using the TLRe cde (see Table 1-1). Issue 54.0 Nvember 14, 2018 Public 18

26 6. Determining Dispatch Instructins Summer Perid (June 1 t September 30) T call n Quebec capacity, the IESO shall issue a reliability declaratin 23 t HQT and issue an advisry ntice t market participants. Fllwing this, HQEM will submit an assciated imprt ffer (HQEM imprt). As in the winter perid, this HQEM imprt will be scheduled by the dispatch algrithm using nrmal market mechanisms. Cnsistent with Market Manual 7.1, Appendix B.1, the IESO may cnstrain n imprt transactins n a reasnable effrt ecnmic basis in advance f r during an emergency perating state. This may include imprt transactins n PQ.OUTAOUAIS assciated with the capacity agreements, with n preferential treatment given t the HQEM imprt. Manual cnstraints will be applied using either the TRLi r ADQh cde fr IESO adequacy (see Table 6-1). 6.5 Pre-Emptive Curtailments If the IESO determines with reasnable certainty that specific transactins, r a certain vlume f transactins, will nt be successfully scheduled r will need t be curtailed in real-time due t an internal issue, the IESO may remve the affected transactins frm the cnstrained schedule nly (using the TLRi cde) fr future hurs. If the IESO determines with reasnable certainty thrugh input frm the apprpriate scheduling entity that transactins will nt be successfully scheduled due t external reliability (security r adequacy), r due t a cnsistent market participant failure (ecnmics r tagging), the IESO may remve the anticipated affected transactins frm the IESO scheduling prcesses, fr future hurs and cde apprpriately. If an external Reliability Crdinatr initiates the NERC TLR prcedure that has resulted, r is anticipated t result, in transactin failures and it is determined, thrugh input frm the apprpriate issuing entity, that the TLR will cntinue fr sme time int the future, the IESO may pre-emptively remve (r reduce t the expected level f delivery) transactins frm the applicable pre-dispatch cnstrained and uncnstrained sequences (using the TLRe cde). On a reasnable effrt basis, the IESO will attempt t remve/reduce the transactins as per the IDC prcess (first by transmissin pririty bucket, then n a reasnable effrt ecnmic basis within the transmissin bucket). T prevent an increased schedule t the remaining transactins, the IESO may cnstrain these transactins t their pre-dispatch value with a TLRe cde. Market participants can visit the NERC website at t cnfirm whether Transmissin Lading Relief Prcedures have been implemented. If pre-emptive curtailments are expected t last fr multiple hurs, an advisry ntice shall be issued ntifying market participants that this practice is ccurring. Anther advisry ntice shall be issued when the pre-emptive curtailments have ended. In all cases, pre-emptive curtailments will be made t the same transactins that are expected t be curtailed in real-time n a reasnable effrt basis (e.g., ecnmics, transmissin pririty, etc.). 23 In accrdance with Market Manual 7.1: IESO-Cntrlled Grid Operating Prcedures, Appendix B.1 Actins in Advance f and During the IESO Cntrlled Grid Emergency Operating State. Issue 54.0 Nvember 14, 2018 Public 19

27 6. Determining Dispatch Instructins 6.6 Transactin Cding Principles f Cding When altering the pre-dispatch schedule issued with respect t each registered facility that is a bundary entity, the IESO will abide by the fllwing cding principles: Principle 1 The IESO will nly intervene t alter pre-dispatch schedules fr a given dispatch hur if: In the IESO s pinin, as a result f changing cnditins, the real-time schedules will nt have sufficient resurces available t maintain the reliable peratin f the IESOcntrlled grid, r Cnsistent with intercnnectin agreements and industry standards, the IESO is requested t d s by anther cntrl area r reliability crdinatr, r The market participant has nt met all requirements. Principle 2 T the extent pssible, IESO manual changes shall be cnsistent with the changes that wuld have ccurred if the hur ahead pre-dispatch sequences had recgnized the reliability cncern. Principle 3 T the extent practicable, the IESO shall limit manual interventin t an amunt equal t the difference between the change in cnditins and the real-time capability f available internal resurces t address that change. Principle 4 T the extent practicable, the IESO shall use the ecnmic merit rder f intertie transactins as the basis fr determining which transactins t manually adjust. Principle 5 IESO manual interventin shall impact the same real-time/pre-dispatch schedule (cnstrained r uncnstrained) that wuld have had insufficient resurces as a result f the changing cnditins, as nted in principle 1. Principle 6 The market participant whse transactin is affected by the IESO manual interventin shall be eligible fr the same market cmpensatin and be subject t the same risks as if the transactin was scheduled in the hur ahead pre-dispatch schedule. Issue 54.0 Nvember 14, 2018 Public 20