Real-Time Binding Constraints

Transmission constraints binding in SPP's real-time balancing market, published every five minutes with the opaque constraint ID, constraint type, NERC flowgate ID where present, TLR level, binding state, source-published monitored and contingent facilities, three limit fields, and the E/W interconnect marker.

Congestion & Constraints data

Download data

Native record

event_time x constraint_name x interconnect x constraint_type x nerc_id x monitored_facility x contingent_facility x contingency_name

5-minute publication cadence

Evidence

Observed market data

Published observations from the named source

Time basis

Point-in-time records

UTC · event_time

Overview

A non-zero shadow price is direct evidence that the source identity was binding and pricing congestion in that interval. SPP does not publish flow or direction in this feed, and a facility label is source context rather than a match to a physical topology entity.

Query contract

Preserve one canonical row per (event_time, constraint_name, interconnect, constraint_type, nerc_id, monitored_facility, contingent_facility, contingency_name) before aggregating.

Analysis rules

Group only after preserving the declared grain: event_time, constraint_name, interconnect, constraint_type, nerc_id, monitored_facility, contingent_facility, contingency_name.

Schema21

Column

Type

event_timeDateTime64(6, 'UTC')

constraint_nameLowCardinality(String)

shadow_priceNullable(Float64)

directionNullable(String)

limit_mwNullable(Float64)

flow_mwNullable(Float64)

ingested_atDateTime64(6, 'UTC')

source_intervalNullable(String)

source_gmt_interval_endNullable(String)

constraint_typeNullable(String)

nerc_idNullable(String)

tlr_levelNullable(String)

binding_statusNullable(String)

monitored_facilityNullable(String)

contingent_facilityNullable(String)

contingency_nameNullable(String)

source_limit_mwNullable(Float64)

effective_limit_mwNullable(Float64)

initial_limit_mwNullable(Float64)

interconnectNullable(String)

source_fileNullable(String)

Sample data

event_time	constraint_name	shadow_price	direction	limit_mw	flow_mw	ingested_at	source_interval	source_gmt_interval_end	constraint_type	nerc_id	tlr_level	binding_status	monitored_facility	contingent_facility	contingency_name	source_limit_mw	effective_limit_mw	initial_limit_mw	interconnect	source_file
2026-09-19 22:05:00.000000	VINHAYKNOXFR	0	∅	95	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	5406	CME	ACTIVATED	LN VINETAP3 - NHAYS	MIDW:KNOLL1 XF A:230 115:1:6	∅	100	95	97	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1268_33172	0	∅	122.85	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33172	CME	ACTIVATED	LN CUDAHY1 - KISMET	SECI:BUCKNER7 HOLCOM1:345:1:13	∅	135	122.85	130.95	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1243_33405	0	∅	91.91	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33405	CME	ACTIVATED	LN SEWARD3 - ST-JOHN	SECI:CLARKCO THISTLE7:345:2:11	∅	101	91.91	97.97	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1241_33286	0	∅	280.28	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33286	CME	ACTIVATED	LN MDWST - FRNKLN1	OKGE:CDRLN BOYD:138:1:13	∅	308	280.28	298.76	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1236_32786	0	∅	153.79	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32786	CME	ACTIVATED	LN CORNTP4 - NAPLES1	OKGE:GRACMONT MINCO:345:1:11	∅	169	153.79	163.93	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1214_32539	0	∅	68.978	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32539	CME	ACTIVATED	XFMR DUNCAN - DUNCAN	OKGE CSWS:SUNNYSDE TERRY_RD:345:2:	∅	75.8	68.978	73.53	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1198_33127	0	∅	37.05	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33127	CME	ACTIVATED	LN HOSSTON - PLAINDEA	CSWS:NBENTON LIEBERM:138:1:11	∅	39	37.05	37.83	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1191_32124	-1500	∅	373.35	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32124	CME	BREACHED	XFMR NOWST1 - NOWST1	OKGE:NOWST1 XF XF3T:345 138 13.8:3	∅	393	373.35	381.21	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1160_33318	0	∅	344.35	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33318	CME	ACTIVATED	LN BROOK_LN - JUNCTN5	SPRM:MAIN1 BATFLD5:161:1:8	∅	355	344.35	344.35	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1154_32011	-1118.9762	∅	357.63	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32011	CME	BREACHED	XFMR NOWST1 - NOWST1	OKGE:NOWST1 XF B_T:345 138 13.8:3:	∅	393	357.63	381.21	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1139_32022	0	∅	63.7	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32022	CME	ACTIVATED	LN MARSHAL3 - KNOB	SECI:CONCOR3 CLIFTO1:115:1:9	∅	70	63.7	67.9	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1136_32015	0	∅	269.36	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32015	CME	ACTIVATED	LN GORD - MAIZ	WR:WICH BENT:345:1:8	∅	296	269.36	287.12	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1121_31979	0	∅	183.35	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	31979	CME	ACTIVATED	LN JAY_HAWK - FRANKLN5	EDE WR:RAM452 NSES:161:1:5	∅	193	183.35	187.21	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1119_31984	0	∅	182.91	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	31984	CME	ACTIVATED	LN JAGG - PENT	WR:87TH_ST STRA:345:1:9	∅	201	182.91	194.97	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1115_33373	-40.5516	∅	251.16	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33373	CME	BINDING	XFMR MSTNG - MSTNG	SPS:SEMIN MSTNG:230:1:9	∅	273	251.16	264.81	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1100_31918	0	∅	475	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	M2M	31918	CME	ACTIVATED	XFMR FTSMTH - FTSMTH	OKGE:FTSMTH XF T5_T:345 161:3:13	∅	500	475	485	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TP1084_31921	0	∅	292.6	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	31921	CME	ACTIVATED	LN CIMARRON - HAYMAKR4	OKGE:CKHAL XEROX CIMARRON:138:2:18	∅	308	292.6	298.76	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TMP994_33360	0	∅	123.76	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33360	CME	ACTIVATED	LN ELRENOJ2 - ELRENO1	OKGE:CTNWD1 CRESCENT:138:1:11	∅	136	123.76	131.92	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TMP972_33380	0	∅	211.85	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33380	CME	ACTIVATED	LN OVRLD_PK - MERRIAM2	KCPL:NASHUA IATAN:345:1:11	∅	223	211.85	216.31	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TMP951_32303	0	∅	172.9	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32303	CME	ACTIVATED	LN 59TH - ELPA	WR:WICH BENT:345:1:8	∅	182	172.9	176.54	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TMP925_29646	0	∅	151.97	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	M2M	29646	CME	ACTIVATED	LN AUR1241 - RDSPG5	SPA AECI:TABLE_RK 5RENOHLW 5RIVRSD	∅	167	151.97	161.99	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TMP908_29620	0	∅	103.55	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	29620	CME	ACTIVATED	LN 29EVENG3 - 29GA	WR:HOYT JEFF:345:1:6	∅	109	103.55	105.73	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TMP889_32879	0	∅	139.23	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32879	CME	ACTIVATED	LN STARRDTP - BRNTP	OKGE WFEC:BROWN2 SBROWN:138:1:5	∅	153	139.23	148.41	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TMP882_32228	0	∅	156.52	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	32228	CME	ACTIVATED	LN HOYT - 54MR	WR:HOYT STRA:345:1:7	∅	172	156.52	166.84	E	/RTBM-BC-latestInterval.csv
2026-09-19 22:05:00.000000	TMP873_33352	-81.0792	∅	131.13	∅	2026-09-19 22:07:37.225038	09/19/2026 17:10:00	09/19/2026 22:10:00	FG	33352	CME	BINDING	LN NORGE_RD - CORNVILL	CSWS:CORNVILL SW_STA:138:4:22	∅	141	131.13	136.77	E	/RTBM-BC-latestInterval.csv

Coverage

100.0% complete0 gap days3,549 days with data

Show coverage history

Coverage: 100.0%Days with data: 3,549Gaps: 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

gaplessmore

Related congestion & constraints data

Related congestion & constraints data
Dataset	Description
Constraint Identity EvidenceSPP · Built from daily DA/RT source evidence	Bitemporal, source-backed identities for SPP binding constraints. Each row preserves the raw operator ID and footprint, exact monitored-facility, contingent-facility, contingency and public flowgate context, evidence locator and version, observed and authoritative effective intervals, match method, confidence, review status, and resolution status. Source-exact and reviewed-exact mappings are distinguished from unresolved, contradictory, and rejected rows. The canonical constraint ID is an SPP source identity, not a physical line or substation ID.
Constraint Identity QualitySPP · Per identity build	One quality row per identity build: observed and distinct raw IDs, resolved/partial/unresolved/contradictory/rejected counts, resolution rate, stale reviewed mappings, one-to-many cases, missing footprint markers, SPP East/West ambiguity, and any source-key loss. This reports the evidence boundary rather than inflating resolution with text or geographic guesses.
Day-Ahead Binding ConstraintsSPP · Hourly (Day-Ahead)	Transmission constraints binding in SPP's day-ahead market, published hourly for the delivery day with the opaque constraint ID, constraint type, NERC flowgate ID where present, binding state, source-published monitored and contingent facilities, contingency name, and the E/W interconnect marker. Pairs with the real-time table to compare which exact source identities the day-ahead market anticipated. This feed does not publish direction, flow, or limits, and its facility labels are source context rather than physical topology matches.
SPP Day-Ahead Binding ConstraintsSPP · hourly	Which transmission facilities bound in SPP's day-ahead market and what each one cost, one row per interval and constraint. 1.11M rows, 2017-01 to the next delivery day. Columns: event_time, constraint_name, shadow_price_usd_mwh, plus constraint_type, nerc_id, binding_status, monitored_facility, contingent_facility, contingency_name, interconnect and source_file. The day-ahead feed does not publish direction, flow or limits. The shadow price is the marginal cost of the binding limit — what the market would have saved from one more megawatt of capability on that element. This is the table that answers WHY congestion appeared; a price spread between two locations shows that they separated but not which facility separated them.