CAISO transmission constraints

Every congestion constraint Voltlas has observed in the CAISO market, ranked by the largest shadow price recorded. Internal constraints are lines, transformers, and operating nomograms inside the CAISO footprint; interties are the scheduling limits on paths to neighbouring grids. Each page shows live day-ahead and real-time values alongside observed binding history.

327 constraints tracked · registry updated 2026-11-07

Internal grid constraints

Transmission lines, transformers, operating nomograms, and outage-driven limits inside CAISO.
OMS_21156170_SCE_PSPS_EXP6 binding$-9446.51
COLWATER – DUNNSIDE 115 kV (ckt 1)9 binding$9236.67
SANYSDRO – OTAY TP 69.0 kV (ckt 1)8 binding$4688.88
OTAY – OTAYLKTP 69.0 kV (ckt 1)13 binding$36.45
PENDLETN – SANLUSRY 69.0 kV (ckt 1)26 binding$42.42
WESTPARK – KERN PWR 115 kV (ckt 1)6 binding$281.80
HPLND JT – CLVRDLJT 60.0 kV (ckt 1)184 binding$332.23
INYOKN nomogram294 binding$-972.90
SC21ATP – ARVIN 70.0 kV (ckt 1)51 binding$910.78
BORDER – OL649 69.0 kV (ckt 1)2 binding$53.51
AEC_TP1 – TESLA 115 kV (ckt 1)75 binding$1433.55
SN JSE A – SNJOSEB 115 kV (ckt 1)99 binding$773.17
BRNSWKT1 – DTCH2TAP 115 kV (ckt 1)189 binding$2368.33
KINGSBRG – CONTADNA 115 kV (ckt 1)221 binding$2359.56
GARFIELD – EL CAJON 69.0 kV (ckt 1)1 binding$80.66
CERTANJ2 – LE GRAND 115 kV (ckt 1)5 binding$12.29
VASONA – METCALF 230 kV (ckt 1)10 binding$1913.30
EL CAJON – LOSCOCHS 69.0 kV (ckt 1)370 binding$384.34
17700_DIB_RGD5 binding$1601.98
NEWARK D – NORTHERN 115 kV (ckt 1)252 binding$1591.28
CHWCHLLA – CERTANJ2 115 kV (ckt 1)4 binding$1552.65
NORTECH – NORTHERN 115 kV (ckt 1)17 binding$1323.03
MESA CAL – LAGUBELL 230 kV (ckt 2_1)47 binding$1499.48
7690-COOLWATER_KRAMER_IM_NG63 binding$-247.24
SylmarBNK N-S Import nomogram219 binding$-245.26
CORTINA 60.0/1.0 kV transformer (bank 1)26 binding$1463.63
MC FRLND – WASCO 70.0 kV (ckt 1)6 binding$115.00
LITEHIPE – MESA CAL 230 kV (ckt 1)4 binding$1457.71
TULUCAY – VACA-DIX 230 kV (ckt 1)5 binding$1443.72
TL 230S OVERLOAD nomogram151 binding$-132.92
METCALF 115/230 kV transformer (bank 3)7 binding$1426.37
MIGUELTP – MIGUEL 69.0 kV (ckt 1)6 binding$1093.17
MIDWAY – VINCENT 500 kV (ckt 2)117 binding$220.54
DS AMIGO – PANOCHE 230 kV (ckt 1)309 binding$1143.39
LE GRAND – ADRA TAP 115 kV (ckt 1)204 binding$687.59
TL649A OVERLOAD nomogram3 binding$-14.62
J.HINDS2 – MIRAGE 230 kV (ckt 1)18 binding$842.70
MIRAMAR – SCRIPPS 69.0 kV (ckt 1)37 binding$1364.98
LS ESTRS – NORTECH 115 kV (ckt 1)45 binding$1363.44
BAY BLVD – OTAY 69.0 kV (ckt 2)1 binding$3.56
CRWCRKSS – CRWS LDS 60.0 kV (ckt 1)1 binding$10.70
DRUM – BRNSWKT2 115 kV (ckt 2)28 binding$270.01
MIRASNTO – PENSQTOS 69.0 kV (ckt 1)11 binding$1267.07
22846_SANJCP_230-22260_ESCNDO_230-BR133 binding$1236.32
HENRIETA 230/115 kV transformer (bank 3)20 binding$1233.68
MOSSLD – LASAGUIL 230 kV (ckt 1)81 binding$350.99
CLAIRMNT – CLARMTTP 69.0 kV (ckt 1)23 binding$1187.69
DOUBLTTP – FRIARS 138 kV (ckt 1)15 binding$251.30
SN JSE A – EL PATIO 115 kV (ckt 1)16 binding$98.40
IVANPAH – MTN PASS 115 kV (ckt 1)9 binding$1129.67
HENTAP1 – MUSTANGS 230 kV (ckt 1)5 binding$64.92
CLER LKE – KONOCTI6 60.0 kV (ckt 1)312 binding$1040.27
GWF_HEP – CONTADNA 115 kV (ckt 1)7 binding$1061.35
NORTHERN – SCOTT 115 kV (ckt 2)39 binding$219.87
PARADISX – MIGUEL 69.0 kV (ckt 1)2 binding$1000.00
SARATOGA – VASONA 230 kV (ckt 1)5 binding$1000.00
KERN PWR – KERNWTP2 115 kV (ckt 1)3 binding$1000.00
NWARK EF – NORTHERN 115 kV (ckt 2)16 binding$1000.00
SDGE_Paradise_BK_NG13 binding$-1000.00
PARDEE – PASTORIA 230 kV (ckt 1)18 binding$509.15
AVCADOTP – AVOCADO 69.0 kV (ckt 1)56 binding$418.09
22020- 23497 AVOCDO-FALBRK_69_BR_1_1111 binding$60.65
Q484TP – BLACKWLL 70.0 kV (ckt 1)2 binding$960.16
HPLND JT 60.0/115 kV transformer (bank 2)1 binding$26.09
SYCAMORE – CHCARITA 138 kV (ckt 1)30 binding$378.80
NWARK EF – ZNKER J1 115 kV (ckt 1)3 binding$926.62
115kv LK31 binding$869.60
USWP-JRW – CAYETANO 230 kV (ckt 1)1 binding$14.84
CP6 nomogram161 binding$-752.26
BORDEN – CASSIDY 70.0 kV (ckt 1)3 binding$737.78
TL23040 IV SPS nomogram235 binding$-272.49
MCSWAINJ – EXCHEQUR 70.0 kV (ckt 1)6 binding$704.40
LOSBANOS – PANOCHE 230 kV (ckt 2)68 binding$244.07
22357_IV PFC1 _230_22358_IV PFC _230_PS_12 binding$688.36
BAY BLVD – IMPRLBCH 69.0 kV (ckt 1)22 binding$103.98
SYCAMORE 138/230 kV transformer (bank 1)37 binding$374.01
SYCAMORE – SCRIPPS 69.0 kV (ckt 1)14 binding$637.95
KRAMER – VICTOR 230 kV (ckt 2)83 binding$111.20
MELONES – MELNS JA 115 kV (ckt 1)11 binding$187.51
CURTISS – FBERBORD 115 kV (ckt 1)1 binding$0.08
LPNJCTSS – GWF_HEP 115 kV (ckt 1)3 binding$6.78
KASSONJ2 – TRACY 115 kV (ckt 1)23 binding$583.13
7760_DEV_RDB_ALIS158 binding$-130.06
OMS_20625033_TL13811_NG9 binding$-540.58
OMS_20625034_TL13811_NG25 binding$-486.88
SANMATEO – RAVENSWD 115 kV (ckt 1)32 binding$481.43
OMS_21115171_SDGE PSPS OUTAGE_NG22 binding$-476.46
NWARK EF – ZNKER J2 115 kV (ckt 1)5 binding$71.81
DELEVAN – CORTINA 230 kV (ckt 1)2 binding$379.83
PANOCHE – GATES 230 kV (ckt 1)34 binding$80.76
OMS IV-ML OUTAGE_NG10 binding$-371.55
VC_TL_681B_import_NG17 binding$-253.66
MIGUEL 500/1.0 kV transformer (bank 80)5 binding$357.90
PANOCHE – GATES 230 kV (ckt 2)27 binding$68.84
OMS_20625025_TL13811_NG12 binding$-342.67
POMERADO – SYCAMORE 69.0 kV (ckt 2)10 binding$82.32
KRAMER – VICTOR 230 kV (ckt 1)112 binding$120.26
USWP-WKR – SBTAP 60.0 kV (ckt 1)58 binding$62.60
MIGUEL_BKs_MXFLW_NG15 binding$-301.16
WARNERVL – WILSON 230 kV (ckt 1)13 binding$297.01
FELLOWS – MORGAN 115 kV (ckt 1)21 binding$295.86
115kv KC_TNP7 binding$292.97
OMS IV-SX OUTAGE_NG1 binding$-279.48
OMS_20625036_TL13811_NG11 binding$-278.74
ASH – ASH TP 69.0 kV (ckt 1)24 binding$50.06
LOSCOCHS – SANTEE 138 kV (ckt 1)13 binding$11.71
POE – RIO OSO 230 kV (ckt 1)11 binding$215.84
DRLKSW – GATES 230 kV (ckt 1)80 binding$266.57
MELNS JB – VLYHMTP1 115 kV (ckt 1)8 binding$266.30
115kv PDA2 binding$266.26
MELNS JA – AVENATP1 115 kV (ckt 1)203 binding$198.95
CP6 nomogram4 binding$-27.11
ULTPWRJ – AIRPROD 115 kV (ckt 1)12 binding$15.62
VICTOR – LUGO 230 kV (ckt 4)3 binding$5.47
KRN OL J – MAGUNDEN 115 kV (ckt 1)14 binding$23.70
OMS_20625027_TL13811_NG5 binding$-242.98
VINCENT 500/230 kV transformer (bank 2)10 binding$241.88
EXCHEQUR – LE GRAND 115 kV (ckt 1)4 binding$63.70
OMS_20864775_TL13811_NG4 binding$-237.84
7510-MAG-PAS2-OOS_NG5 binding$-233.48
DEVERS – CALCAPS2 500 kV (ckt 2)5 binding$233.39
DRUM – BONNIE N 60.0 kV (ckt 1)21 binding$228.33
SALADO – STNSLSRP 60.0 kV (ckt 1)49 binding$38.71
6110_COI_N-S2 binding$-221.54
HENRITTA 70.0/230 kV transformer (bank 4)107 binding$55.52
MARTINEZ – ALHAMTP2 115 kV (ckt 1)2 binding$216.94
PARDEE – WARNETAP 230 kV (ckt 1)8 binding$36.63
TABLE MT – VACA-DIX 500 kV (ckt 1)5 binding$206.62
LASAGUIL – PANOCHE 230 kV (ckt 2)20 binding$204.82
SNJQJCT – GFFNJCT 70.0 kV (ckt 1)94 binding$61.31
LARKIN – POTRERO 115 kV (ckt 2)21 binding$202.47
115kv HC_Tu_Ce1 binding$201.25
MORROBAY – SOLARSS 230 kV (ckt 2)19 binding$200.66
KETTLEMN – GATES 70.0 kV (ckt 1)202 binding$200.22
HGHLNDJ2 – CORTINA 115 kV (ckt 1)287 binding$109.68
COLRIVER 230/500 kV transformer (bank 1)3 binding$8.30
LOCKEFRD – LODI JCT 60.0 kV (ckt 1)3 binding$45.73
ZNKER J1 – TRIMBLE 115 kV (ckt 1)1 binding$195.73
7690-INYOKN_VOLTAGE_EX_NG16 binding$-193.42
Outage constraint TL2305410 binding$-122.03
GARDNER – MARICOPW 70.0 kV (ckt 1)4 binding$5.77
LOSBANOS – PADR FLT 230 kV (ckt 1)12 binding$93.06
LOS BANS 70.0/230 kV transformer (bank 3)68 binding$173.86
DELAMO – BARRE 230 kV (ckt 1)14 binding$171.40
TAFT – Q356TAP 70.0 kV (ckt 1)236 binding$111.92
DELTAPMP – ALTM MDW 230 kV (ckt 1)11 binding$81.89
POWAY – POMERADO 69.0 kV (ckt 1)1 binding$169.64
GATES2 – MIDWAY 500 kV (ckt 2)122 binding$117.63
MESA CAL 500/13.8 kV transformer (bank 2H)2 binding$5.95
KINGSBRG – FRWT TAP 115 kV (ckt 1)41 binding$120.52
OMS_20788970 MG-BK81_NG32 binding$-156.31
TRCY PMP – TESLA D 230 kV (ckt 2)16 binding$152.54
VEAJAF – MERCURY 138 kV (ckt 1)2 binding$30.51
CARIBOU 115/1.0 kV transformer (bank 11)28 binding$72.32
MIDWAY – WIRLWIND 500 kV (ckt 1)9 binding$83.04
COI_600 N-S7 binding$-62.47
KRN OL J – KERNWTP2 115 kV (ckt 1)1 binding$136.50
AEC_TP2 – TESLA 115 kV (ckt 1)143 binding$125.88
MELRSETP – SANMRCOS 69.0 kV (ckt 1)10 binding$133.89
TESLA – LOSBANOS 500 kV (ckt 1)5 binding$93.02
TL50001+TL50003_OOS_SLINE_IMP16 binding$-128.20
Lugo AA bank outage Area EXP36 binding$-125.14
MAGUNDEN – ANTELOPE 230 kV (ckt 1)1 binding$120.71
WINDHUB 230/500 kV transformer (bank 2)8 binding$108.80
DEVERS 500/230 kV transformer (bank 2)22 binding$114.77
BONNIE N – CPEHRNTP 60.0 kV (ckt 1)3 binding$108.00
SN BRNRD – SC21ATP 70.0 kV (ckt 1)6 binding$107.24
NNSS_SW – NNSS_VA 138 kV (ckt 1)4 binding$93.98
MEADISO – MEAD S 230 kV (ckt PR_1)1 binding$5.11
NEENACH – TAP 85 66.0 kV (ckt 1)25 binding$32.75
BARRE – VILLA PK 230 kV (ckt 1)17 binding$91.79
COWCREEK – DESCHTP1 60.0 kV (ckt 1)4 binding$52.36
SNJOSEB – TRIMBLE 115 kV (ckt 1)6 binding$88.35
OLD TOWN – POINTLMA 69.0 kV (ckt 1)1 binding$85.36
PANOCHE – KAMM 115 kV (ckt 1)43 binding$49.44
MOE-ELD – ELDORDO 500 kV (ckt 1)2 binding$74.34
BARRE – LEWIS 230 kV (ckt 1)22 binding$74.04
KONOCTI6 – EGLE RCK 60.0 kV (ckt 1)5 binding$73.30
LUGO 230/500 kV transformer (bank 2)13 binding$73.06
VICTOR – ROADWAY 115 kV (ckt 1)43 binding$72.45
OMS_20625030_TL13811_NG2 binding$-71.53
DR360370 115/1.0 kV transformer (bank 1)34 binding$67.80
ATWELL – SMYRNA 1 115 kV (ckt 1)1 binding$0.87
CENTER S – MESA CAL 230 kV (ckt 1)2 binding$67.13
VICTOR – LUGO 230 kV (ckt 1)13 binding$62.36
BARRETT – LOVELAND 69.0 kV (ckt 1)1 binding$60.08
GATES1 – MIDWAY 500 kV (ckt 1)61 binding$50.05
JHINDS CP2 nomogram1 binding$-53.98
GATES – CAFLTSSS 230 kV (ckt 1)1 binding$4.31
KIFER – FMC 115 kV (ckt 1)15 binding$30.59
BORDEN 70.0/230 kV transformer (bank 1)1 binding$22.93
MIDWAY – VINCENT 500 kV (ckt 1)22 binding$46.99
HUMBOLDT_EXP_NG11 binding$-18.09
LLAGAS – MORGN J2 115 kV (ckt 1)4 binding$43.25
HDWSH – N.GILA 500 kV (ckt 1)6 binding$19.81
TRES VIS – TBLE MTN 60.0 kV (ckt 1)7 binding$42.38
WAUKENA – CORCORAN 115 kV (ckt 1)1 binding$41.84
VC_TL_6926_import_NG7 binding$-40.24
TAFT – CUYAMA 70.0 kV (ckt 2)21 binding$39.90
WHISMAN – MNTA VSA 115 kV (ckt 1)1 binding$39.44
LILAC – PALA 69.0 kV (ckt 1)2 binding$1.81
ALTM MDW – TESLA D 230 kV (ckt 1)10 binding$38.64
South_of_SO_IV_NGILA_NG6 binding$-38.43
7760_GEN_REQUIREMENT7 binding$-37.04
OMS_20864779_TL13811_NG1 binding$-36.78
DRLKSW – MIDWAY 230 kV (ckt 1)7 binding$35.70
SWTWTRTP – SWEETWTR 69.0 kV (ckt 1)3 binding$35.27
ARCO – AZALEA 70.0 kV (ckt 1_1)2 binding$23.38
SANLUSRY – S.ONOFRE 230 kV (ckt 3)14 binding$33.66
SAN EMDO – OLD RIVR 70.0 kV (ckt 1)10 binding$17.14
VINCENT – S.CLARA 230 kV (ckt 1)3 binding$31.85
7510-PAS-BAI-PAR-OOS_NG0 binding$0.00
RVRBK TP – TULLOCH 115 kV (ckt 1)6 binding$27.15
CHENYT – PANOCHE 115 kV (ckt 1)11 binding$24.66
BAY BLVD – SILVERGT 230 kV (ckt 1)1 binding$26.34
GATES – ARCO 230 kV (ckt 1)4 binding$26.14
HENRETTA – LPNJCTSS 115 kV (ckt 1)3 binding$24.92
SMYRNA 2 – SEMITRPJ 115 kV (ckt 1)3 binding$22.64
SILVERGT – OLD TOWN 230 kV (ckt 1)1 binding$22.92
6110_COI_S-N1 binding$-22.92
ESCNDIDO – LILAC 69.0 kV (ckt 1)1 binding$4.27
LOSBANOS – GATES1 500 kV (ckt 1)4 binding$22.26
AERAVIC1 – FELLOWS 115 kV (ckt 1)1 binding$21.80
AVENATP1 – MANTECA 115 kV (ckt 1)1 binding$21.48
HAAS 13.8/230 kV transformer (bank 1)1 binding$3.94
MT VIEW – MNTA VSA 115 kV (ckt 1)1 binding$19.70
OMS_20956557_PARDE_PAST_WARN_EDM17 binding$-19.21
WISHON – AUBRYTP 70.0 kV (ckt 1)1 binding$18.96
METCALF 115/230 kV transformer (bank 2)1 binding$14.33
BAILEY – TAP 85 66.0 kV (ckt 1)10 binding$18.41
FRGTNTP1 – MELNS JA 115 kV (ckt 1)1 binding$17.22
DESCHTP1 – DESCHUTS 60.0 kV (ckt 1)5 binding$17.00
VC_TL_681B_export_NG7 binding$-12.62
VALLEYVE – VALLEYTP 138 kV (ckt 1)14 binding$14.02
RIPON J – MANTECA 115 kV (ckt 1)1 binding$12.79
HUMBOLDT_IMP_NG0 binding$0.00
COLRIVER 230/500 kV transformer (bank 2)5 binding$8.62
MDWAYR12 230/500 kV transformer (bank 12)1 binding$8.04
LOSBANOS – DS AMIGO 230 kV (ckt 1)1 binding$7.03
ORO LOMA – POSO J1 70.0 kV (ckt 1)1 binding$6.95
LUGO 230/500 kV transformer (bank 1)1 binding$5.71
BIOMSJCT – MENDOTA 70.0 kV (ckt 1)2 binding$3.94
7440_MetcalfImport_Mossld-Metclf2 binding$-3.55
BOWMNTAP – DRUM 60.0 kV (ckt 1)1 binding$1.29
TL687_BREGGO_NAROWS1 binding$-0.41
KINGSJCT – GUARD J2 115 kV (ckt 1)1 binding$0.39
MORAGA – CLARMNT 115 kV (ckt 2)1 binding$0.18

Intertie scheduling constraints

Limits on the paths connecting CAISO to neighbouring balancing authorities.
IPPUTAH_ITC272 binding$-1000.00
GRACE_ONEIDA_138_53 binding$1670.10
YU XFMR2 A 69KV43 binding$1479.12
GLENCANY_SIGURD_23014 binding$1463.07
Line_WAL-TH_69KV19 binding$1067.86
EPE_NET_ITC42 binding$-988.81
YU XFMR4 A 69KV16 binding$1034.57
PACW_NET_ITC4 binding$-1031.15
06400_DYR_AUS11 binding$1000.00
CASCADE_ITC92 binding$-3.69
GONDIPPDC_ITC1 binding$-1000.00
IPPDCADLN_ITC533 binding$-1000.00
MALIN500_ISL186 binding$-1000.00
PACW_CRAG_ITC369 binding$-1000.00
TAR BK E11 binding$1000.00
CFEROA_ITC1 binding$-999.34
EPE_SNMIC_ITC9 binding$-960.64
AZPS_NET_ITC6 binding$-955.00
CFE_ITC17 binding$-553.49
KY___OC___230_135 binding$745.65
SHERIDAN_YELLOWTA_23052 binding$374.96
LDWP_IPP_NORTH547 binding$-64.78
MKTPCADLN_ITC2 binding$-315.42
WALC_NET_ITC5 binding$-299.83
BPAT_NET_ITC10 binding$-261.90
PINALCENT500_ITC59 binding$-247.00
SUNZIA_ITC189 binding$-221.09
Victorville_Los_Angeles1 binding$165.56
WINDSTAR_YELLOWCA_23017 binding$154.66
Line_Wilo-EOX_500KV85 binding$132.91
HARRYAL$_REDBUTTU_3452 binding$115.83
GWA_NET_ITC3 binding$-36.44
GON 345TXF#41 binding$100.89
KEEL_RVGT_V12027 binding$87.64
NOB_ITC61 binding$-35.59
TOTAL_WYOMING_EXPORT54 binding$76.29
MONAIPPDC_ITC164 binding$-22.40
NEVP_NET_ITC4 binding$-16.91
BMPR-RTSN1_A18 binding$60.36
PACE_FOURCORNE345_ITC39 binding$-25.42
TEPC_BA_EXP_ITC11 binding$-23.75
Norton NHReact4 binding$50.10
CZ 345kV1 binding$49.46
PACW_COI_IMPORT_ITC234 binding$-47.65
LADWP_NET_ITC14 binding$-47.00
IPCO_LAGRANDE_ITC13 binding$-45.08
COTPISO_ITC24 binding$-43.54
SRP_NET_ITC33 binding$-38.01
NWMT_AMPS_EAST2 binding$-24.91
PALOVRDE_ITC42 binding$-27.58
WSTWGMEAD_ITC12 binding$-25.04
NWMT_NET_ITC1 binding$-24.44
PGE_PACW.PGE_ITC_EXP102 binding$-20.77
PACE_PATHC_ITC59 binding$-19.80
PACE_NET_ITC4 binding$-22.57
TEPC_BA_IMP_ITC41 binding$-17.17
HED_PGG2 binding$19.09
TEPC_NET_ITC33 binding$-11.91
PACE_POPWEST_ITC0 binding$0.00
ELK_HED16 binding$14.08
ELK_HED26 binding$14.08
LunaPNM345_115X1 binding$13.07
PNM_SRP_ITC1 binding$-0.92
BNK-1AAL1 binding$8.62
PACW_PACW.PGE_ITC55 binding$-3.68
ATW_VEL 11 binding$3.41
PACW_COI_EXPORT_ITC130 binding$-3.27
PGE_PACW.PGE_ITC_IMP107 binding$-1.04
BLYTHE_ITC0 binding$0.00
LDWP_MCCULLOUG5000 binding$0.00
MERCHANT_ITC0 binding$0.00
NORTHGILA500_ITC0 binding$0.00
PARKER_ITC0 binding$0.00
SUMMIT_ITC0 binding$0.00
TEPC_SPV_VAIL_ITC0 binding$0.00
WALC_MEAD230_IMPORT_ITC0 binding$0.00
WALC_NET_EXPORT_ITC0 binding$0.00
WALC_NET_IMPORT_ITC0 binding$0.00
WALC_NVE_EXPORT_ITC0 binding$0.00
WALC_TEP_IMPORT_ITC0 binding$0.00
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