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IESO (Ontario Grid)

Free

IESO — Independent Electricity System Operator of Ontario, Canada's largest electricity market. Public grid data: hourly Ontario demand, day-ahead zonal energy price, per-generator output & capability by fuel type, and intertie (interconnection) schedules/flows — for load forecasting, renewable-integration, and price analysis. No auth (public CSV + IESO-schema XML report files).

Set up this sourceGet the full contract and schemas as JSON

No key required. Included on Free.

What you can ask

  • “What does IESO (Ontario Grid) have for the area or asset I'm working on?”
  • “Pull the most recent IESO (Ontario Grid) records and put them in a table.”
  • “What does IESO (Ontario Grid) cover, and how fresh is the data?”

About this source

IESO — Independent Electricity System Operator of Ontario, Canada's largest electricity market. Public grid data: hourly Ontario demand, day-ahead zonal energy price, per-generator output & capability by fuel type, and intertie (interconnection) schedules/flows — for load forecasting, renewable-integration, and price analysis. No auth (public CSV + IESO-schema XML report files).

Connector ID ieso-ontario

Provenance

PublisherIESO (Ontario Grid)
API basehttps://reports-public.ieso.ca/public

Freshness & coverage

FreshnessFreshness not declared
GeographicNot declared
TemporalNot declared
AuthenticationNo credentials required

› Methods (6)

Technical detail for developers: parameters, pagination, units, and freshness per method.

  • getOntarioDemand

    read

    Hourly market + Ontario electricity demand (MW)

    year defaults current; limit defaults 168 recent hours. Returns hourly demand.

  • getDayAheadZonalPrice

    read

    Day-ahead hourly Ontario zonal energy price ($/MWh)

    date defaults latest; returns hourly zonal, loss, and congestion prices.

  • getGeneratorOutputCapability

    read

    Per-generator hourly output + capability by fuel type

    Filter date and fuelType; limit defaults 200. Large report; filter by fuel.

  • getIntertieScheduleFlow

    read

    Intertie (interconnection) hourly schedules + flows by zone

    Args: date?. Body: per IntertieZone schedules (Import/Export) + flows by hour.

  • listReportFiles

    read

    Enumerate available files in a report folder (or all 139 report folders)

    report selects a folder; omit it to list report folders and discover dates.

  • getServiceInfo

    read

    Static API overview — reports, CSV/XML formats, latest-vs-dated filenames