IESO (Ontario Grid)

Methods (6)

• getOntarioDemand

  read

  Hourly market + Ontario electricity demand (MW)

  Input schema

  {
    "type": "object",
    "properties": {
      "year": {
        "oneOf": [
          {
            "type": "string"
          },
          {
            "type": "number"
          }
        ]
      },
      "limit": {
        "type": "number",
        "examples": [
          168
        ]
      }
    },
    "additionalProperties": false
  }

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

• getDayAheadZonalPrice

  read

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

  Input schema

  {
    "type": "object",
    "properties": {
      "date": {
        "type": "string",
        "examples": [
          "2026-06-17"
        ]
      }
    },
    "additionalProperties": false
  }

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

• getGeneratorOutputCapability

  read

  Per-generator hourly output + capability by fuel type

  Input schema

  {
    "type": "object",
    "properties": {
      "fuelType": {
        "type": "string",
        "examples": [
          "NUCLEAR"
        ]
      },
      "limit": {
        "type": "number"
      },
      "date": {
        "type": "string"
      }
    },
    "additionalProperties": false
  }

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

• getIntertieScheduleFlow

  read

  Intertie (interconnection) hourly schedules + flows by zone

  Input schema

  {
    "type": "object",
    "properties": {
      "date": {
        "type": "string"
      }
    },
    "additionalProperties": false
  }

  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)

  Input schema

  {
    "type": "object",
    "properties": {
      "report": {
        "type": "string",
        "examples": [
          "Demand"
        ]
      }
    },
    "additionalProperties": false
  }

  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

  Input schema

  {
    "type": "object",
    "properties": {},
    "additionalProperties": false
  }