NYISO MIS Public Data Archive

aid: nyiso:nyiso-mis-public-data
name: NYISO MIS Public Data Archive
description: NYISO's Market Information System public archive - the operator's flagship open data surface.
  Roughly sixty machine-readable report families are published as predictable daily CSV files and monthly
  ZIP bundles under a stable path convention, covering day-ahead and real-time zonal and generator LBMP,
  ancillary services prices, ISO load forecast, real-time and integrated actual load, real-time fuel mix,
  ATC/TTC and long-term ATC/TTC, transmission and generation outages, limiting constraints, interface
  limits and flows, PAR schedules and flows, Lake Erie circulation, bid data, capacity reports, zonal
  and resource uplift, generator and load reference names, active transmission nodes, subzone definitions,
  and the DOE EIA-930 hourly demand postings. Fully anonymous over plain HTTP and HTTPS - no key, no account,
  no application, no licence click-through. Verified by direct probe on 2026-07-27 - for example csv/damlbmp/20260725damlbmp_zone.csv,
  csv/realtime/20260725realtime_zone.csv, csv/pal/20260725pal.csv, csv/rtfuelmix/20260725rtfuelmix.csv
  and csv/isolf/20260725isolf.csv each returned 200 text/csv, and monthly bundles such as csv/damlbmp/20260701damlbmp_zone_csv.zip
  returned 200. This is a file-based data surface with a URL convention, not a REST API, and NYISO publishes
  no OpenAPI, WSDL or JSON contract for it.
humanURL: https://www.nyiso.com/energy-market-operational-data
baseURL: http://mis.nyiso.com/public
tags:
- Open Data
- Energy Markets
- Electricity
- Grid
- Pricing
properties:
- type: Documentation
  url: https://www.nyiso.com/energy-market-operational-data
- type: Portal
  url: http://mis.nyiso.com/public/
- type: Documentation
  url: https://www.nyiso.com/pricing-data
- type: Documentation
  url: https://www.nyiso.com/load-data
- type: Documentation
  url: https://www.nyiso.com/power-grid-data
- type: Documentation
  url: https://www.nyiso.com/emissions-data
- type: JSONSchema
  name: Day-Ahead Market Zonal LBMP (P-2A) record
  url: json-schema/nyiso-damlbmp-zone-schema.json
- type: JSONSchema
  name: Day-Ahead Market Generator LBMP (P-2B) record
  url: json-schema/nyiso-damlbmp-gen-schema.json
- type: JSONSchema
  name: Real-Time Market Zonal LBMP (P-24A) record
  url: json-schema/nyiso-realtime-zone-schema.json
- type: JSONSchema
  name: Real-Time Actual Load (P-58B) record
  url: json-schema/nyiso-pal-schema.json
- type: JSONSchema
  name: Integrated Real-Time Actual Load (P-58C) record
  url: json-schema/nyiso-palIntegrated-schema.json
- type: JSONSchema
  name: Real-Time Fuel Mix (P-63) record
  url: json-schema/nyiso-rtfuelmix-schema.json
- type: JSONSchema
  name: ISO Load Forecast (P-7) record
  url: json-schema/nyiso-isolf-schema.json
- type: JSONSchema
  name: Real-Time Ancillary Services Prices (P-6B) record
  url: json-schema/nyiso-rtasp-schema.json
- type: JSONSchema
  name: Day-Ahead Ancillary Services Prices (P-5) record
  url: json-schema/nyiso-damasp-schema.json
- type: JSONSchema
  name: Day-Ahead Scheduled Outages (P-54C) record
  url: json-schema/nyiso-outSched-schema.json
- type: DataModel
  name: MIS public report catalogue and data model
  url: data-model/nyiso-data-model.yml
- type: AgentSkill
  name: Pull NYISO market and system data
  url: skills/nyiso-pull-market-data.md