Overview
NYISO day-ahead limiting-constraint records for the market-clearing plan, including limiting facility, facility PTID, contingency, and constraint cost. Paired with day-ahead LBMP components, it helps explain expected congestion and transfer limits before real-time operations.
Use with MCP
This table is available through the signed-in, read-only Ask the Grid MCP server. Connect a market below, then use search_data or describe_data to load its query contract before calling query_data.
Schema7
Column
Type
event_timeDateTime64(6, 'UTC')time_zoneNullable(String)limiting_facilityNullable(String)facility_ptidInt64contingencyLowCardinality(String)constraint_costNullable(Float64)ingested_atDateTime64(6, 'UTC')Sample rows
| event_time | time_zone | limiting_facility | facility_ptid | contingency | constraint_cost | ingested_at |
|---|---|---|---|---|---|---|
| 2026-08-16 03:00:00.000000 | EDT | SCRIBA 345 VOLNEY 345 1 | 25204 | SCRIBA__-VOLNEY___345_21 | 1.71 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 03:00:00.000000 | EDT | SCRIBA 345 VOLNEY 345 1 | 25204 | SCRIBA__-VOLNEY___345_21 | 1.71 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 02:00:00.000000 | EDT | SCRIBA 345 VOLNEY 345 1 | 25204 | SCRIBA__-VOLNEY___345_21 | 18.69 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 02:00:00.000000 | EDT | SCH - PJ - NY | 23316 | BASE CASE | 3.25 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 02:00:00.000000 | EDT | SCRIBA 345 VOLNEY 345 1 | 25204 | SCRIBA__-VOLNEY___345_21 | 18.69 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 02:00:00.000000 | EDT | SCH - PJ - NY | 23316 | BASE CASE | 3.25 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 01:00:00.000000 | EDT | ELWOOD 69 PULASKLI 69 1 | 26610 | BUS:NRTHPRT 677 & PS2 & G2 | 2.79 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 01:00:00.000000 | EDT | NRTHPORT 138 PILGRIM 138 2 | 25308 | BUS:NPRT 672&NNC&601&602&603 | 1.98 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 01:00:00.000000 | EDT | SCRIBA 345 VOLNEY 345 1 | 25204 | SCRIBA__-VOLNEY___345_21 | 25.38 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 01:00:00.000000 | EDT | SPRNBRK 345 UNIONHBS 345 1 | 25105 | BASE CASE | 0.02 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 01:00:00.000000 | EDT | SCH - PJ - NY | 23316 | BASE CASE | 2.05 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 01:00:00.000000 | EDT | HQCP ACTIVE DNI | 892 | ACTIVE DNI | -2.74 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 01:00:00.000000 | EDT | ELWOOD 69 PULASKLI 69 1 | 26610 | BUS:NRTHPRT 677 & PS2 & G2 | 2.79 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 01:00:00.000000 | EDT | NRTHPORT 138 PILGRIM 138 2 | 25308 | BUS:NPRT 672&NNC&601&602&603 | 1.98 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 01:00:00.000000 | EDT | SCRIBA 345 VOLNEY 345 1 | 25204 | SCRIBA__-VOLNEY___345_21 | 25.38 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 01:00:00.000000 | EDT | SPRNBRK 345 UNIONHBS 345 1 | 25105 | BASE CASE | 0.02 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 01:00:00.000000 | EDT | SCH - PJ - NY | 23316 | BASE CASE | 2.05 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 01:00:00.000000 | EDT | HQCP ACTIVE DNI | 892 | ACTIVE DNI | -2.74 | 2026-08-15 04:55:24.987354 |
| 2026-08-16 00:00:00.000000 | EDT | ELWOOD 69 PULASKLI 69 1 | 26610 | BUS:NRTHPRT 677 & PS2 & G2 | 13.45 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 00:00:00.000000 | EDT | PILGRIM 138 PILGRIM 138 1 | 25604 | TWR:HOLBROOK 880 & 882 | -0.15 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 00:00:00.000000 | EDT | NRTHPORT 138 PILGRIM 138 2 | 25308 | BUS:NPRT 672&NNC&601&602&603 | 8.83 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 00:00:00.000000 | EDT | RAINEY 138 VERNON 138 1 | 25297 | BASE CASE | -0.02 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 00:00:00.000000 | EDT | SCRIBA 345 VOLNEY 345 1 | 25204 | SCRIBA__-VOLNEY___345_21 | 30.06 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 00:00:00.000000 | EDT | SPRNBRK 345 UNIONHBS 345 1 | 25105 | BASE CASE | 0.11 | 2026-08-15 05:55:25.399094 |
| 2026-08-16 00:00:00.000000 | EDT | ELWOOD 69 PULASKLI 69 1 | 26610 | BUS:NRTHPRT 677 & PS2 & G2 | 13.45 | 2026-08-15 04:55:24.987354 |
Coverage
100.0% complete0 gap days4,246 days with data
Show coverage history ▾
Coverage: 100.0%Days with data: 4,246Gaps: 0
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