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Real-Time and Day-Ahead LMP

ISO-NE locational marginal prices for physical PNodes, eight load zones, the Internal Hub, and external nodes.

Prices dataISO-NE market
Query with the agentOpen on map
Native record
market run x scope x pricing location x delivery interval
5-minute real-time and hourly day-ahead/real-time publication cadence
Evidence
Mixed evidence
Multiple evidence types kept distinct in the contract
In Ask the Grid
PNode prices on the ISONE map
Values for the live grid surface

Overview

Filter market_run and scope before use; lmp_total is accompanied by energy, congestion, and loss components.

Query contract

Filter market_run and scope before selecting the latest ingested_at row per event_time and location_id.

Analysis rules

  • Keep rt_5m, rt_hourly_prelim, and da_hourly_final market runs separate.
  • Preserve physical PNodes, load zones, the Internal Hub, and external nodes as distinct location types.

Interpretation

  • ISO New England posts the next day's day-ahead prices by early afternoon Eastern time the day before delivery, but they typically become available here overnight, at the start of the delivery day itself — the evening before, the next day's day-ahead prices are usually not yet visible.

Access

Query from your own tools

Use the guarded HTTP endpoint directly, or connect an MCP client and load the dataset contract with describe_data before calling query_data.

ISO-NE MCP API reference
HTTP endpoint
POST /api/v1/datasets/isone_lmp/query

Schema11

Column
Type
event_timeDateTime64(6, 'UTC')
market_runLowCardinality(String)
scopeLowCardinality(String)
location_idLowCardinality(String)
location_nameNullable(String)
location_typeNullable(String)
lmp_totalNullable(Float64)
energy_componentNullable(Float64)
congestion_componentNullable(Float64)
loss_componentNullable(Float64)
ingested_atDateTime64(6, 'UTC')

Sample data

event_timemarket_runscopelocation_idlocation_namelocation_typelmp_totalenergy_componentcongestion_componentloss_componentingested_at
2026-09-28 05:25:00.000000rt_5mhub4018.I.HQMRL_RD345 1EXT. NODE20.9622.890-1.932026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4017.I.NRTHPORT138 5EXT. NODE22.5922.890-0.32026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4014.I.SHOREHAM138 99EXT. NODE22.8822.890-0.012026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4013.I.HQHIGATE120 2EXT. NODE23.0322.8900.142026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4012.I.HQ_P1_P2345 5EXT. NODE23.2122.8900.322026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4011.I.ROSETON 345 1EXT. NODE22.8522.890-0.042026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4010.I.SALBRYNB345 1EXT. NODE21.6122.890-1.282026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4008.Z.NEMASSBOSTLOAD ZONE23.2322.8900.342026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4007.Z.WCMASSLOAD ZONE23.1222.8900.232026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4006.Z.SEMASSLOAD ZONE23.2122.8900.322026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4005.Z.RHODEISLANDLOAD ZONE22.8222.890-0.072026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4004.Z.CONNECTICUTLOAD ZONE22.5422.890-0.352026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4003.Z.VERMONTLOAD ZONE23.1522.8900.262026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4002.Z.NEWHAMPSHIRELOAD ZONE22.9522.8900.062026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4001.Z.MAINELOAD ZONE22.0622.890-0.832026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mhub4000.H.INTERNAL_HUBHUB23.0922.8900.22026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall77616UN.CONGRESS13.8CSFCNETWORK NODE22.2922.890-0.62026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall77615UN.ROXBURY 34.5TWNWNETWORK NODE21.0322.890-1.862026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall774UN.E_FAIRFX34.5LLAMNETWORK NODE23.1122.8900.222026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall77305UN.TASKERFM34.5NUTSNETWORK NODE22.9422.8900.052026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall77304UN.3RIVRSME34.5TRSNETWORK NODE20.5722.890-2.322026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall769UN.N_CANAL 34.5HADLNETWORK NODE22.9222.8900.032026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall768UN.GARVINS 34.5GARVNETWORK NODE2322.8900.112026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall767UN.OAK_HILL34.5CONCNETWORK NODE23.0322.8900.142026-09-28 05:30:18.572341
2026-09-28 05:25:00.000000rt_5mall7619DR.RI_Rhode_IslandDRRAZ22.8222.890-0.072026-09-28 05:30:18.572341

Coverage

100.0% complete0 gap days2,583 days with data
Show coverage history
Coverage: 100.0%Days with data: 2,583Gaps: 0
2026
2025
2024
2023
2022
2021
2020
2019
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