# NYISO MIS Public Data Archive

**Canonical:** https://apis.io/apis/nyiso/nyiso-mis-public-data/  
**Provider:** New York Independent System Operator (NYISO) — https://apis.io/providers/nyiso/  
**Base URL:** http://mis.nyiso.com/public  
**Documentation:** https://www.nyiso.com/energy-market-operational-data

NYISO MIS Public Data Archive is one of 6 APIs that [New York Independent System Operator (NYISO)](https://apis.io/providers/nyiso/) publishes on the [APIs.io](https://apis.io/) network. This API exposes 10 JSON Schema definitions. Tagged areas include Open Data, Energy Markets, Electricity, Grid, and Pricing. The published artifact set on APIs.io includes API documentation and 10 JSON Schemas.

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.

## Machine-readable artifacts (19)

- **Documentation** — https://www.nyiso.com/energy-market-operational-data
- **Portal** — http://mis.nyiso.com/public/
- **Documentation** — https://www.nyiso.com/pricing-data
- **Documentation** — https://www.nyiso.com/load-data
- **Documentation** — https://www.nyiso.com/power-grid-data
- **Documentation** — https://www.nyiso.com/emissions-data
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-damlbmp-zone-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-damlbmp-gen-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-realtime-zone-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-pal-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-palIntegrated-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-rtfuelmix-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-isolf-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-rtasp-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-damasp-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/json-schema/nyiso-outSched-schema.json
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/data-model/nyiso-data-model.yml
- **AgentSkill** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/skills/nyiso-pull-market-data.md
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/nyiso/refs/heads/main/apis.yml

## Other New York Independent System Operator (NYISO) APIs (5)

- [NYISO OASIS Postings](https://apis.io/apis/nyiso/nyiso-oasis-postings/)
- [NYISO Finance Metering API](https://apis.io/apis/nyiso/nyiso-finance-metering-api/)
- [NYISO Finance Settlements API](https://apis.io/apis/nyiso/nyiso-finance-settlements-api/)
- [NYISO Finance Invoicing API](https://apis.io/apis/nyiso/nyiso-finance-invoicing-api/)
- [NYISO Metering API](https://apis.io/apis/nyiso/nyiso-metering-api/)

## Tags

Open Data, Energy Markets, Electricity, Grid, Pricing

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/nyiso/nyiso-mis-public-data/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/nyiso/.