Exceptional Dispatch Report. Table 1: November 2018

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1 Dpartmt of Mar Quality ad Rwabl Itgratio Califoria ISO Excptioal Dispatch Rport Tabl 1: Novm 2018 CAISO Mar Quality ad Rwabl Itgratio Jauary 15, 2019 CAISO 250 Outcroppig Way Folsom, Califoria (916)

2 TABLE OF CONTENTS Itroductio... 3 Th Natur of Excptioal Dispatch... 3 Appdix A: Explaatio by Exampl Exampl 1: Excptioal Dispatch Istructios Prior to DAM Exampl 2: Icrmtal Excptioal Dispatch Istructios i RTM Exampl 3: Dcrmtal Excptioal Dispatch Istructios i RTM LIST OF TABLES AND FIGURES Tabl 1: Excptioal Dispatchs i Novm Tabl 2: Istructios Prior to Day-Ahad Mar Tabl 3: FERC Suary of Istructios Prior to DAM Tabl 4: Icrmtal Excptioal Dispatch Istructios i RTM Tabl 5: FERC Suary of ED Istructios i RTM Tabl 6: Dcrmtal Excptioal Dispatch Istructios i RTM Tabl 7: FERC Suary of Dcrmtal ED Istructios i RTM CAISO\Mar Quality ad Rwabl Itgratio Pag 2

3 Itroductio This rport is fild puuat to FERC s Sptm 2, 2009, ad May 4, 2010, ord i Doc No. ER Ths ord rquir two mothly Excptioal Dispatch rports o issud o th 15 th of ach moth ad o issud o th 30 th of ach moth. This rport provids data o th frqucy ad rasos for Excptioal Dispatchs issud i Novm Th Natur of Excptioal Dispatch Th CAISO ca issu xcptioal dispatch istructios for a ourc as a prday-ahad uit cot, which may also iclud a idicativ xcptioal dispatch rgy schdul, a post-day-ahad uit cot, or a ral-tim xcptioal dispatch. 1 A pr-day-ahad cot is a xcptioal dispatch istructio that coits a ourc at or abov its physical miimum opratig lvl i th day-ahad mar. A post-day-ahad mar cot is a xcptioal dispatch istructio that coits a ourc at or abov its physical miimum opratig lvl i th ral-tim mar. A ral-tim xcptioal dispatch istructio is a dispatch of a ourc at or abov its physical miimum opratig poit. A ral-tim xcptioal dispatch abov th ourc day-ahad award is a icrmtal xcptioal dispatch istructio ad a xcptioal dispatch blow th day-ahad award is a dcrmtal dispatch istructio. Th CAISO issus xcptioal dispatch istructios to maitai th rliability of th grid wh th mar softwar caot do so. Whvr th CAISO issus a xcptioal dispatch istructio, th oprator logs th dispatch ad th associatd raso. May of th xcptioal dispatchs listd blow i Tabl 1, wr to satisfy ithr a local ara or systm rliability rquirmts, ad ar classifid ito local gratio rquirmts, trasmissio maagmt rquirmts, o-modld trasmissio outags or othr o-modld costraits or rquirmts ad itrti mrgcy assistac. All of th trasmissio procdu ar availabl o th CAISO wbsit. 2 Th followig raso for xcptioal dispatch istructios i Novm 2018 was ot rlatd to gratio or trasmissio opratig procdu: Softwar Limitatio, wh a xcptioal dispatch istructio was usd to bridg schduls across days for ourcs with a miimum dow tim of 24 hou, as th CAISO softwar dos ot hadl multi day cot. For istac, a ourc has a day-ahad schdul from 0600 till 2300, ad th is shut dow i If this ourc had a miimum dow tim of 24 hou ad it is rquird th 1 Th CAISO ca issu xcptioal dispatch istructios subjct to authority of th CAISO Tariff Sctio ad i accordac with CAISO Opratig Procdur 2330 (formrly M-402). 2 A list of all of th CAISO s publicly availabl Opratig Procdu ar availabl at th followig lik: CAISO\Mar Quality ad Rwabl Itgratio Pag 3

4 followig day, th th CAISO issus a xcptioal dispatch to coit this ourc i 2400 so it ca b dispatchd coomically i th followig day. Softwar limitatio raso was also usd for xcptioal dispatchs to maually issu shut dow istructios to a ourc bcaus of a tmporary Automatic Dispatch Systm ( ADS ) failur, or similar issus. Thr wr a fw othr rasos usd to xplai xcptioal dispatch istructios i Novm 2018, which ar slf xplaatory. Th data i Tabl 1 is basd o a tmplat spcifid i th Sptm 2009 ordr. 3 Each try i Attachmt A is a suary of xcptioal dispatchs classifid by (1) th raso for th xcptioal dispatch; (2) th locatio of th ourc by Participatig Trasmissio Owr ( PTO ) srvic ara; (3) th Local Rliability Ara ( LRA ) whr applicabl; (4) th mar i which th xcptioal dispatch occurrd (day-ahad vs. ral-tim); ad (5) th dat of th xcptioal dispatch. For ach classificatio th followig iformatio is providd: (1) Mgawatts (MW); (2) t (3) Ic or Dc (4) ; (5) ; ad (6). Th MW colum shows th rag of xcptioal dispatch istructios i MW for th classificatio. Th t colum spcifis if thr was a uit cot for th classificatio. Th INC/ colum spcifis if thr was a icrmtal dispatch or a dcrmtal dispatch from th IFM schdul. Th colum shows th start of xcptioal dispatch for th classificatio ad th colum shows th d of xcptioal dispatch for th classificatio. Th colum is th diffrc btw d tim ad bgi tim roudd up to th xt hour. Th data show is furthr xplaid by way of xampl i Attachmt A. Tabl 1 idicats thr wr 180 xcptioal dispatchs i Novm 2018, as compard to 233 xcptioal dispatchs i Octo Excptioal dispatchs issud for th followig rasos accoutd for approximatly 72 prct of th total xcptioal dispatchs durig th rportig priod: plad trasmissio outags, softwar limitatios, load forcast ucrtaity, ad opratig procdur um 7110 (alog with 7630 ad 7720). May of th xcptioal dispatchs with th raso Othr Rliability Rquirmt wr du to Ral tigcy Aalysis. 3 Th data i Tabl 1 is pricipally SLIC iformatio supplmtd with data from th Mar Quality Systm (MQS). It is th most accurat currtly availabl ad it is worth otig that this data has b through th T+38B iitial statmt procss whri may uolvd issus ar fixd. Th CAISO blivs that this data will corrlat wll with th sttlmts data that will b availabl wh th CAISO fils th Tabl 2 rport for th rportig priod. CAISO\Mar Quality ad Rwabl Itgratio Pag 4

5 Dpartmt of Mar Quality ad Rwabl Itgratio Califoria ISO Num Mar Tabl 1: Excptioal Dispatchs i Novm 2018 Califoria Idpdt Systm Oprator rporatio Excptioal Dispatch Rport Jauary 15, 2019 Chart 1: Tabl of Excptioal Dispatchs for Priod 01/Novm/ /Novm/2018 Ara Trad Dat MW 1 RT ditios byod th cotrol of th CAISO SCE LA Basi 11/15/ Ys INC 24 0:00 0:00 2 RT ditios byod th cotrol of th CAISO SDGE Sa Digo-IV 11/1/ No INC 7 0:00 7:00 3 RT tigcy Dispatch PGAE Fo 11/21/ No INC 1 9:55 10:00 4 RT tigcy Dispatch SCE LA Basi 11/9/ No INC 2 7:45 9:35 5 RT Fast Start Uit Maagmt SCE LA Basi 11/10/ No INC 2 0:45 1:50 6 RT Icomplt or Iaccurat Trasmissio PGAE Fo 11/22/ No 3 10:45 13:00 7 RT Icomplt or Iaccurat Trasmissio PGAE Fo 11/22/ No INC 7 10:45 17:00 8 RT Load Forcast Ucrtaity PGAE Bay Ara 11/7/ No INC 10 14:00 0:00 9 RT Load Forcast Ucrtaity PGAE Bay Ara 11/9/ No INC 1 7:30 8:20 t No INC 1 7:30 8:20 10 RT Load Forcast Ucrtaity SCE LA Basi 11/9/ RT Load Forcast Ucrtaity SCE LA Basi 11/12/ No INC 15 9:00 0:00 12 RT Load Forcast Ucrtaity SCE LA Basi 11/13/ No INC 9 12:00 21:00 13 RT Load Forcast Ucrtaity SCE LA Basi 11/14/ No INC 9 12:00 21:00 14 RT Load Forcast Ucrtaity SCE LA Basi 11/16/ Ys INC 24 0:00 0:00 15 RT Load Forcast Ucrtaity SCE LA Basi 11/19/ No INC 18 6:00 0:00 16 RT Load Forcast Ucrtaity SCE LA Basi 11/20/ No INC 5 14:30 19:00 17 RT Load Forcast Ucrtaity SCE LA Basi 11/21/ No INC 8 13:15 21:00 18 RT Load Forcast Ucrtaity SCE LA Basi 11/24/ No INC 6 15:40 21:00 CAISO\Mar Quality ad Rwabl Itgratio Pag 5

6 Num Mar Ara Trad Dat MW t 19 RT Load Forcast Ucrtaity SCE LA Basi 11/29/ No INC 5 16:05 21:00 20 RT Load Forcast Ucrtaity SCE LA Basi 11/30/ No INC 7 14:15 21:00 21 RT Load Forcast Ucrtaity SDGE Sa Digo-IV 11/8/ No INC 23 1:30 0:00 22 RT Load Forcast Ucrtaity SDGE Sa Digo-IV 11/12/ No INC 14 8:30 22:00 23 RT Load Pull PGAE Bay Ara 11/17/ No 1 17:00 18:00 24 RT Load Pull SCE LA Basi 11/15/ No INC 3 16:40 19:30 25 RT Load Pull SCE LA Basi 11/19/ No INC 7 13:55 20:00 26 RT Mar Disruptio PGAE Bay Ara 11/15/ No 2 18:00 19:15 27 RT (7110) PGAE Humboldt 11/2/ No 5 16:00 21:00 28 RT (7110) PGAE Humboldt 11/2/ No INC 18 6:25 0:00 29 RT (7110) PGAE Humboldt 11/3/ No 1 19:45 20:00 30 RT (7110) PGAE Humboldt 11/3/ No INC 23 0:00 23:00 31 RT (7110) PGAE Humboldt 11/4/ No INC 4 20:35 0:00 32 RT (7110) PGAE Humboldt 11/5/ No 11 1:00 12:00 33 RT (7110) PGAE Humboldt 11/5/ No INC 24 0:00 0:00 34 RT (7110) PGAE Humboldt 11/6/ No INC 18 6:40 0:00 35 RT (7110) PGAE Humboldt 11/7/ No INC 3 21:25 0:00 36 RT (7110) PGAE Humboldt 11/8/ No 12 12:00 0:00 CAISO\ Mar Quality ad Rwabl Itgratio Pag 6

7 Num Mar 37 RT 38 RT 39 RT 40 RT 41 RT 42 RT 43 RT 44 RT 45 RT 46 RT 47 RT 48 RT 49 RT 50 RT 51 RT 52 RT Ara Trad Dat MW (7110) PGAE Humboldt 11/8/ No INC 12 0:00 12:00 (7110) PGAE Humboldt 11/9/ No 17 0:00 16:45 (7110) PGAE Humboldt 11/9/ No INC 15 9:55 0:00 (7110) PGAE Humboldt 11/10/ No INC 23 0:00 22:30 (7110) PGAE Humboldt 11/11/ No INC 1 8:15 8:30 (7110) PGAE Humboldt 11/12/ No INC 9 6:05 15:00 (7110) PGAE Humboldt 11/13/ No 3 16:00 19:00 (7110) PGAE Humboldt 11/13/ No INC 7 9:00 16:00 (7110) PGAE Humboldt 11/15/ No 8 15:00 23:00 (7110) PGAE Humboldt 11/15/ No INC 17 7:05 23:45 (7110) PGAE Humboldt 11/17/ No 1 22:40 23:00 (7110) PGAE Humboldt 11/17/ No INC 1 23:00 0:00 (7110) PGAE Humboldt 11/18/ No 8 0:45 8:00 (7110) PGAE Humboldt 11/18/ No INC 1 0:00 0:45 (7110) PGAE Humboldt 11/25/ No INC 5 17:05 22:00 (7110) PGAE Humboldt 11/26/ No 8 15:00 23:00 t CAISO\ Mar Quality ad Rwabl Itgratio Pag 7

8 Num Mar 53 RT 54 RT 55 RT 56 RT 57 RT 58 RT 59 RT 60 RT 61 RT 62 RT 63 RT 64 RT 65 RT 66 RT 67 RT 68 RT Ara Trad Dat MW (7110) PGAE Humboldt 11/26/ No INC 18 6:50 0:00 (7110) PGAE Humboldt 11/27/ No 4 0:45 4:45 (7110) PGAE Humboldt 11/27/ No INC 24 0:00 0:00 (7110) PGAE Humboldt 11/28/ No 2 0:15 1:45 (7110) PGAE Humboldt 11/28/ No INC 1 0:00 0:15 (7630) SCE LA Basi 11/15/ No INC 6 13:35 19:00 (7720) SCE NA 11/1/ No 4 17:00 21:00 (7720) SCE NA 11/1/ No INC 1 16:15 17:00 (7720) SCE NA 11/2/ No 1 19:00 20: (7720) SCE NA 11/2/ No INC 2 20:00 22: (7720) SCE NA 11/3/ No 3 18:00 20: (7720) SCE NA 11/4/ No 2 17:00 18:30 (7720) SCE NA 11/5/ No 7 17:00 0:00 (7720) SCE NA 11/5/ No INC 6 15:50 21:00 (7720) SCE NA 11/6/ No 7 17:00 0:00 (7720) SCE NA 11/6/ No INC 2 15:00 17:00 t CAISO\ Mar Quality ad Rwabl Itgratio Pag 8

9 Num Mar 69 RT Ara Trad Dat MW (7720) SCE NA 11/7/ No 7 17:00 0:00 70 RT (7720) SCE NA 11/7/ No INC 1 16:00 17:00 71 RT Othr Rliability Rquirmt PGAE Sirra 11/13/ No 4 8:35 12:00 t Big Crk- Vtura 11/13/ No 1 23:15 23:45 72 RT Othr Rliability Rquirmt SCE 73 RT Othr Rliability Rquirmt SCE LA Basi 11/13/ No INC 1 23:00 23:45 74 RT Othr Rliability Rquirmt SCE NA 11/13/ No 1 23:15 23:45 75 RT Othr Rliability Rquirmt SCE NA 11/17/ No 1 20:00 21:00 76 RT Othr Rliability Rquirmt SCE NA 11/17/ No INC 3 17:55 20:00 77 RT Plad Trasmissio Outag PGAE Bay Ara 11/30/ No INC 6 9:45 15:00 78 RT Plad Trasmissio Outag PGAE Fo 11/28/ No 3 16:00 19:00 79 RT Plad Trasmissio Outag PGAE Fo 11/28/ No INC 10 14:00 0:00 80 RT Plad Trasmissio Outag PGAE Fo 11/29/ No INC 5 0:00 5:00 81 RT Plad Trasmissio Outag PGAE Humboldt 11/1/ No 6 16:00 22:00 82 RT Plad Trasmissio Outag PGAE Humboldt 11/1/ No INC 18 6:25 0:00 83 RT Plad Trasmissio Outag PGAE Humboldt 11/2/ No INC 2 0:00 2:00 84 RT Plad Trasmissio Outag PGAE Humboldt 11/4/ No INC 13 7:45 20:00 85 RT Plad Trasmissio Outag PGAE Humboldt 11/6/ No INC 8 8:10 16:00 86 RT Plad Trasmissio Outag PGAE Humboldt 11/7/ No INC 15 6:05 21:00 87 RT Plad Trasmissio Outag PGAE Humboldt 11/10/ No INC 2 22:00 0:00 88 RT Plad Trasmissio Outag PGAE Humboldt 11/11/ No INC 24 0:00 0:00 89 RT Plad Trasmissio Outag PGAE Humboldt 11/12/ No 1 22:35 23:00 90 RT Plad Trasmissio Outag PGAE Humboldt 11/12/ No INC 24 0:00 0:00 91 RT Plad Trasmissio Outag PGAE Humboldt 11/13/ No 2 1:35 3:00 92 RT Plad Trasmissio Outag PGAE Humboldt 11/13/ No INC 2 0:00 1:30 93 RT Plad Trasmissio Outag PGAE Humboldt 11/14/ No 6 1:00 6:25 94 RT Plad Trasmissio Outag PGAE Humboldt 11/14/ No INC 21 0:00 20:45 CAISO\ Mar Quality ad Rwabl Itgratio Pag 9

10 Mar Num Ara Trad Dat MW 95 RT Plad Trasmissio Outag PGAE NA 11/3/ No INC 6 17:30 23:00 96 RT Plad Trasmissio Outag PGAE NA 11/4/ No INC 5 0:00 3:30 97 RT Plad Trasmissio Outag PGAE NA 11/6/ No INC 12 12:45 0:00 98 RT Plad Trasmissio Outag PGAE NA 11/7/ Ys INC 24 0:00 0:00 99 RT Plad Trasmissio Outag PGAE NA 11/8/ Ys INC 24 0:00 0: RT Plad Trasmissio Outag PGAE NA 11/9/ Ys INC 24 0:00 0: RT Plad Trasmissio Outag PGAE NA 11/10/ No INC 24 0:00 0: RT Plad Trasmissio Outag PGAE NA 11/11/ Ys INC 24 0:00 0: RT Plad Trasmissio Outag PGAE NA 11/12/ Ys INC 24 0:00 0: RT Plad Trasmissio Outag PGAE NA 11/13/ Ys INC 24 0:00 0: RT Plad Trasmissio Outag PGAE NA 11/14/ No INC 12 0:00 11: RT Plad Trasmissio Outag PGAE Sirra 11/12/ No INC 9 11:00 20: RT Plad Trasmissio Outag PGAE Sirra 11/13/ No INC 4 7:00 11: RT Plad Trasmissio Outag PGAE Sirra 11/15/ No 4 15:00 19: RT Plad Trasmissio Outag PGAE Sirra 11/15/ No INC 3 12:00 15: RT Plad Trasmissio Outag PGAE Sirra 11/16/ No INC 4 5:45 9: RT Plad Trasmissio Outag PGAE Stockto 11/3/ No INC 6 17:15 23: RT Plad Trasmissio Outag PGAE Stockto 11/4/ No INC 4 0:00 2: RT Plad Trasmissio Outag PGAE Stockto 11/28/ No 17 5:00 22: RT Plad Trasmissio Outag PGAE Stockto 11/28/ No INC 23 0:40 23: RT Plad Trasmissio Outag SCE t Big Crk- Vtura 11/14/ No INC 2 18:00 20: Ys INC 2 21:05 22: RT Plad Trasmissio Outag SCE LA Basi 11/1/ RT Plad Trasmissio Outag SCE LA Basi 11/3/ Ys INC 19 4:30 23: RT Plad Trasmissio Outag SCE LA Basi 11/4/ Ys INC 25 0:00 0: RT Plad Trasmissio Outag SCE LA Basi 11/5/ Ys INC 24 0:00 0: RT Plad Trasmissio Outag SCE LA Basi 11/6/ No INC 2 0:00 2: RT Plad Trasmissio Outag SCE LA Basi 11/12/ No INC 2 22:25 0:00 CAISO\ Mar Quality ad Rwabl Itgratio Pag 10

11 Mar Num Ara Trad Dat MW 122 RT Plad Trasmissio Outag SCE LA Basi 11/13/ No INC 24 0:00 0: RT Plad Trasmissio Outag SCE LA Basi 11/14/ No INC 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/1/ No 6 11:15 17: RT Plad Trasmissio Outag SCE NA 11/7/ No INC 7 8:00 15: RT Plad Trasmissio Outag SCE NA 11/13/ No 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/14/ No 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/14/ No INC 6 9:40 15:00 t No 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/15/ RT Plad Trasmissio Outag SCE NA 11/16/ No 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/17/ No 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/18/ No 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/19/ No 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/20/ No 24 0:00 0: RT Plad Trasmissio Outag SCE NA 11/21/ No 18 0:00 17: RT Plad Trasmissio Outag SDGE Sa Digo-IV 11/1/ No INC 17 5:30 22: RT Plad Trasmissio Outag SDGE Sa Digo-IV 11/5/ No INC 2 4:30 6: RT Plad Trasmissio Outag SDGE Sa Digo-IV 11/6/ No INC 22 2:00 0: RT Plad Trasmissio Outag SDGE Sa Digo-IV 11/7/ No INC 24 0:00 0: RT Plad Trasmissio Outag SDGE Sa Digo-IV 11/8/ No INC 22 0:00 22: RT Plad Trasmissio Outag SDGE Sa Digo-IV 11/19/ No 2 17:00 19: RT Plad Trasmissio Outag SDGE Sa Digo-IV 11/19/ No INC 1 16:30 17: RT Softwar Limitatio PGAE Bay Ara 11/1/ No INC 1 0:00 0: RT Softwar Limitatio PGAE Humboldt 11/1/ No INC 1 23:30 0: RT Softwar Limitatio PGAE NA 11/2/ No 1 20:30 21: RT Softwar Limitatio SCE LA Basi 11/9/ No INC 2 9:35 11: RT Softwar Limitatio SDGE Sa Digo-IV 11/5/ No INC 3 6:00 9:00 CAISO\ Mar Quality ad Rwabl Itgratio Pag 11

12 Num Mar Ara Trad Dat MW t RT Uit Tstig SDGE NA 11/6/ No INC 2 13:05 15: RT Uit Tstig SDGE NA 11/7/ No INC 6 10:25 16: RT Uit Tstig SDGE NA 11/15/ No INC 13 7:10 19: RT Uit Tstig SDGE NA 11/16/ No INC 4 15:40 19: RT Uit Tstig SDGE NA 11/17/ No INC 13 7:30 19: RT Uit Tstig SDGE NA 11/18/ No INC 10 12:45 22: RT Uit Tstig SDGE NA 11/19/ No INC 6 10:00 16: RT Uit Tstig SDGE NA 11/20/ No INC 10 7:00 16: RT Uit Tstig SDGE NA 11/26/ No INC 10 11:15 20: RT Uit Tstig SDGE NA 11/27/ No 1 18:00 19: RT Uit Tstig SDGE NA 11/27/ Ys INC 17 6:00 22: Ys INC 7 6:15 13: RT Uit Tstig SDGE NA 11/28/ RT Uit Tstig SDGE NA 11/30/ No INC 3 14:00 17: RT Uplad Outag PGAE Sirra 11/8/ Ys INC 1 23:00 0: RT Uplad Outag PGAE Sirra 11/9/ No INC 7 0:00 7: RT Uplad Outag SDGE Sa Digo-IV 11/8/ No INC 2 22:00 0: RT Uplad Outag SDGE Sa Digo-IV 11/9/ No INC 24 0:00 0: RT Uplad Outag SDGE Sa Digo-IV 11/10/ No INC 22 0:00 22: RT Voltag Support PGAE Fo 11/17/ No INC 1 23:20 23: RT Voltag Support PGAE Fo 11/18/ No INC 8 0:00 8: RT Voltag Support PGAE Fo 11/28/ No 4 2:05 5: RT Voltag Support PGAE Sirra 11/17/ Ys INC 5 2:00 7:00 CAISO\ Mar Quality ad Rwabl Itgratio Pag 12

13 Mar Num Ara Trad Dat MW 170 RT Voltag Support SCE NA 11/1/ No 24 0:00 0: RT Voltag Support SCE NA 11/2/ No 24 0:00 0: RT Voltag Support SCE NA 11/5/ No 7 17:20 0: RT Voltag Support SCE NA 11/6/ No 24 0:00 0: RT Voltag Support SCE NA 11/7/ No 10 14:00 0: RT Voltag Support SCE NA 11/7/ No INC 14 0:00 14: RT Voltag Support SCE NA 11/8/ No 24 0:00 0: RT Voltag Support SCE NA 11/9/ No 24 0:00 0: RT Voltag Support SCE NA 11/10/ No 24 0:00 0: RT Voltag Support SCE NA 11/11/ No 24 0:00 0: RT Voltag Support SCE NA 11/12/ No 24 0:00 0:00 t CAISO\ Mar Quality ad Rwabl Itgratio Pag 13

14 Appdix A: Explaatio by Exampl All xampls listd blow ar basd o fictitious data. Exampl 1: Excptioal Dispatch Istructios Prior to DAM I this fictitious xampl, th CAISO issud a xcptioal dispatch istructio for ourc A to b coittd at its physical miimum (Pmi) of 50 MW from hou dig 5 through 10 for a gratio procdur Similarly, th CAISO issud additioal istructios to ourcs B ad C for th sam raso as show i Tabl 2. Grally, xcptioal dispatchs prior to th day-ahad mar ar cots to miimum load. Hr th dispatch lvls ar all at miimum load. Tabl 2: Istructios Prior to Day-Ahad Mar Dat Mar Rsourc Ara (LRA) Dispatch Lvl (MW) 01-Jul-09 DA A SCE LA BASIN 05:00 10: Jul-09 DA B SCE LA BASIN 08:00 20: Jul-09 DA C SCE LA BASIN 09:00 23: This data is suarizd as show i Tabl 3, which is th pcribd format spcifid i th FERC ordr o Sptm 02, This suary classifis th data by raso, ourc locatio, local rliability ara, ad trad dat. Th MW colum i Tabl 3 is th rag of MW; i this cas th miimum istructio MW is 20 MW for ourc C which occu from hou dig 21 through 23. Th maximum istructio occu i hour dig 10. I this hour ourc A is coittd at 50 MW, ourc B is coittd at 30 MW ad ourc C is coittd at 20 MW. This adds up to 100 MW. Th MW colum shows th miimum ad maximum of th ovrlaps of all th xcptioal dispatch istructios. Th t colum shows whthr a ourc was coittd btw th bgi tim ad d tim. ts ar brok out sparatly from rgy dispatchs. I th day-ahad, howvr th xcptioal dispatchs ar arly always just cots, as i this xampl. Th colum shows hour dig 5 as this was th hour dig for fit dispatch of th day, ad th colum shows hour dig 23, as this was th hour with last dispatch. It is also possibl that thr might b hou btw th bgi tim ad th d tim whr thr might ot b xcptioal dispatch istructios for th giv raso, maig that th rag btw th bgi tim ad d tim ca iclud ull hou with o dispatch. CAISO\ Mar Quality ad Rwabl Itgratio Pag 14

15 Num Mar Tabl 3: FERC Suary of Istructios Prior to DAM Ara (LRA) Trad Dat 1 DA 7630 SCE LA Basi 1-Jul MW t INC/ r Ys N/A 19 05:00 23:00 Exampl 2: Icrmtal Excptioal Dispatch Istructios i RTM I this fictitious xampl, th CAISO issud a xcptioal dispatch istructio to ourc A to b coittd at its Pmi of 30 MW from hou dig 7 through 11 aftr compltio of th day-ahad mar for th trasmissio procdur This ourc had o day-ahad award i thos hou. Th CAISO issud aothr xcptioal dispatch istructio to ourc B, to b dispatchd at 40 MW from hou dig 8 through 9 i ral-tim for th trasmissio procdur This ourc had a day-ahad schdul of 20 MW from th day-ahad mar, which implis that this xcptioal dispatch istructio was a icrmtal istructio ad th xcptioal dispatch MW was 20 MW. Similarly, th dtails of xcptioal dispatch (ED) istructio for ourc C ar show i Tabl 4. Dat Mar Rsourc Local Rliability Ara (LRA) Tabl 4: Icrmtal Excptioal Dispatch Istructios i RTM Dispatch Lvl (MW) Day- Ahad Award (MW) t INC/ ED (MW) 01-Jul-09 RT A PG&E Humboldt 06:00 11: Ys INC Jul-09 RT B PG&E Humboldt 07:00 09: No INC Jul-09 RT C PG&E Humboldt 12:00 15: No INC Jul-09 RT C PG&E Humboldt 16:00 20: No INC CAISO\ Mar Quality ad Rwabl Itgratio Pag 15

16 This data is suarizd as show i Tabl 5 ad is classifid by raso, ourc locatio, local rliability ara, ad trad dat. Th MW colum i Tabl 5 is th rag of MW; i this cas th miimum istructio MW is 0 MW for ourc C which occu from hou dig 13 through 15. Th maximum istructio occu i hou dig 8 & 9, as durig ths two hou both ourcs A ad B hav a ED MW of 30MW ad 20MW, pctivly. This adds up to 50 MW. Th MW colum shows th miimum ad maximum of th ovrlaps of all th xcptioal dispatch istructios. Th t colum shows whthr a ourc was coittd btw th bgi tim ad d tim. This colum shows a cot if thr was a sigl cot i th tir itrval of xcptioal dispatch. Th colum shows th tim of th fit dispatch of th day. This is a tim ot a rag. Similarly th colum shows a tim ad ot a rag. Excptioal dispatchs occurrd btw ths two tims. Sic thr was a cot btw th bgi tim ad d tim th th t colum displays ys for th suary. Similarly, th INC/ colum shows a INC as thr was a icrmtal dispatch btw th bgi tim ad d tim. As mtiod i th prvious xampl it is possibl that thr might b hou btw th bgi tim ad d tim whr thr wr o xcptioal dispatch istructios for th giv raso. Num Mar Tabl 5: FERC Suary of ED Istructios i RTM Ara (LRA) Trad Dat MW t INC/ r 1 RT 7110 PG&E Humboldt 1-Jul Ys INC 15 06:00 20:00 CAISO\ Mar Quality ad Rwabl Itgratio Pag 16

17 Exampl 3: Dcrmtal Excptioal Dispatch Istructios i RTM This xampl highlights dcrmtal xcptioal dispatch istructios i th ral-tim mar. I this fictitious xampl th CAISO issud a xcptioal dispatch istructio to ourc A to b coittd at its Pmi of 20 MW from hou dig 15 through 20 aftr compltio of th day-ahad mar for th trasmissio procdur Th CAISO issud additioal xcptioal dispatch istructios for ourcs B ad C; dtails of thos istructios ar show i Tabl 6. Dat Mar Tabl 6: Dcrmtal Excptioal Dispatch Istructios i RTM Rsourc Local Rliability Ara (LRA) Dispatch Lvl (MW) Day- Ahad Award (MW) t 01-Jul-09 RT A PG&E Fo 15:00 20: Ys INC Jul-09 RT B PG&E Fo 07:00 09: No Jul-09 RT C PG&E Fo 10:00 14: No INC/ ED (MW) This data is suarizd accordig to FERC covtio as show i Tabl 7. This suary classifis th data by raso, ourc locatio, local rliability ara, ad trad dat. Plas ot that ic ad dc ar brok out sparatly. Th ic try is slf-xplaatory ad similar to th prvious xampl. Rgardig th dc try th MW colum is th rag of MW; i this cas th miimum dc istructio is 10 MW (actually -10MW as it is a dc) for ourc C which occu from hou dig 10 through 14. Th maximum istructio occu from hou dig 7 through 9, wh ourc B was issud a dc istructio of 20 MW. Th MW colum shows th miimum ad maximum of th ovrlaps of all th xcptioal dispatch istructios. Th t colum shows whthr a ourc was coittd btw th bgi tim ad d tim. Num Mar Tabl 7: FERC Suary of Dcrmtal ED Istructios i RTM Ara (LRA) Trad Dat MW t INC/ r 1 RT 7430 PG&E Fo 1-Jul Ys INC 6 15:00 20:00 1 RT 7430 PG&E Fo 1-Jul Ys 8 07:00 14:00 CAISO\ Mar Quality ad Rwabl Itgratio Pag 17

_ Dear Secretary Bose: The attached. Folsom, CA

_ Dear Secretary Bose: The attached. Folsom, CA California Independent System Operator June 29, 2012 The Honorable Kimberly D. Bose Secretary Federal Energy Regulatory Commission 888 First Street, NE Washington, DC 20426 Re: California Independent System