# IESO Public Reports Repository

**Canonical:** https://apis.io/apis/ieso/ieso-public-reports-repository/  
**Provider:** IESO — https://apis.io/providers/ieso/  
**Base URL:** https://reports-public.ieso.ca/public/  
**Documentation:** https://www.ieso.ca/en/Power-Data/Data-Directory

IESO Public Reports Repository is one of 9 APIs that [IESO](https://apis.io/providers/ieso/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Market Data, Open Data, Electricity, Reports, and Ontario. The published artifact set on APIs.io includes API documentation.

The IESO's open market and system data surface. A flat HTTPS file repository publishing 139 report directories — hourly Ontario and market demand, HOEP and nodal/zonal prices, day-ahead and pre-dispatch LMPs, generator output and capability, generation by fuel type, intertie schedules and flows, transmission and generation outages, operating reserve, adequacy, transmission rights auction results and settlement uplift — as CSV, XML and XLSX. Report URLs follow a documented, stable pattern (https://reports-public.ieso.ca/public/<Document Identifier>/PUB_<Report>_<date>_v<n>.<ext>) and are readable anonymously with no account, API key, registration or licence acceptance. Verified HTTP 200 on the root listing and on a live data file on 2026-07-27. This is not a REST API — there are no query parameters, filtering, pagination or content negotiation — but it is a documented, machine-readable, schema-backed retrieval interface intended for automation, described in IESO's own Outbound Automated Document specification (IMO_SPEC_0100).

## Machine-readable artifacts (20)

- **Documentation** — https://www.ieso.ca/en/Power-Data/Data-Directory
- **Documentation** — https://www.ieso.ca/en/Power-Data
- **Specification** — https://www.ieso.ca/-/media/Files/IESO/technical-interfaces/xml-automated-docs/IMO_SPEC_0100.pdf
- **Specification** — https://www.ieso.ca/-/media/Files/IESO/technical-interfaces/xml-automated-docs/STD-2.pdf
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-imo-document-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-document-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-intertie-schedule-flow-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-gen-output-capability-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-disp-uncons-hoep-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-disp-advisory-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-dacp-predisp-energy-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-dacp-predisp-prices-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-dacp-adequacy-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-dacp-reliability-commit-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-dacp-commit-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-dacp-check-source-ade-r1.xsd
- **XSD** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/xsd/ieso-financial-binding-status-r1.xsd
- **Sandbox** — https://reports-public-sandbox.ieso.ca/public/
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/data-model/ieso-data-model.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/ieso/refs/heads/main/apis.yml

## Other IESO APIs (8)

- [IESO Reports Site REST API](https://apis.io/apis/ieso/ieso-reports-site-rest-api/)
- [IESO Market Information Management (MIM) Web Services](https://apis.io/apis/ieso/ieso-mim-web-services/)
- [IESO Registration System Facilities API](https://apis.io/apis/ieso/ieso-registration-facilities-api/)
- [IESO Retrofit System API](https://apis.io/apis/ieso/ieso-retrofit-api/)
- [IESO Retrofit Service Provider API](https://apis.io/apis/ieso/ieso-retrofit-service-provider-api/)
- [IESO Dispatch Service Web Service](https://apis.io/apis/ieso/ieso-dispatch-service-web-service/)
- [IESO Dispatch Notification Service Web Service](https://apis.io/apis/ieso/ieso-dispatch-notification-service/)
- [IESO Outage Coordination and Scheduling System (OCSS) Web Service](https://apis.io/apis/ieso/ieso-ocss-web-service/)

## Tags

Market Data, Open Data, Electricity, Reports, Ontario

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