AESO
AESO Metered Volume Report API

Metered volume detail for the Alberta Interconnected Electric System, served from /meteredvolume/details. This is settlement-grade metering at market-asset granularity — not retail customer metering; AESO holds no household usage data.
Documentation GitHub OpenAPI
OpenAPI Specification

{
  "openapi": "3.0.1",
  "info": {
    "title": "Metered Volume Report",
    "description": "Fetch AIES Metered Volume data",
    "version": "v1"
  },
  "servers": [
    {
      "url": "https://apimgw.aeso.ca/public/meteredvolume-api"
    },
    {
      "url": "https://gateway-apim.aeso.ca/public/meteredvolume-api"
    }
  ],
  "paths": {
    "/meteredvolume/details": {
      "get": {
        "operationId": "getMeteredVolumeReport",
        "summary": "Fetch AIES Metered Volume data",
        "description": "Fetch AIES Metered Volume for a given date or date range. \n\nIf only the startDate is provided, data will only be provided for that day. \r\n\n\nOptional parameters asset_ID and pool_participant_ID can be provided to limit the data returned. The asset_ID and pool_participant_ID parameters are comma separated lists. At most, one of the two parameters can be passed in an API call.\r\n\n\nIf no asset_ID or pool_participant_ID is provided, then the API with fetch data for all assets, which will be limited to 16 days in a single fetch.\r\n\n\nIf asset_ID or pool_participant_ID is provided, the API with fetch data specific to those parameters. The results will be limited to approximately 100K records in a single fetch. For example, a single asset will return 24 records for 1 day. Please restrict your query accordingly. \n\n",
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/MeteredVolumeReport"
                },
                "examples": {
                  "default": {
                    "value": {
                      "pool_participant_ID": "string",
                      "asset_list": [
                        {
                          "asset_ID": "string",
                          "asset_class": "string",
                          "metered_volume_list": [
                            {
                              "begin_date_utc": "string",
                              "begin_date_mpt": "string",
                              "metered_volume": "string"
                            }
                          ]
                        }
                      ]
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "Bad Request"
          },
          "401": {
            "description": "Unauthorized"
          },
          "403": {
            "description": "Forbidden"
          },
          "404": {
            "description": "Not Found"
          },
          "405": {
            "description": "Invalid method"
          },
          "500": {
            "description": "Internal server error"
          },
          "503": {
            "description": "Service unavailable"
          }
        },
        "parameters": [
          {
            "name": "startDate",
            "in": "query",
            "required": true,
            "description": "Any date between 2000-01-01 and current date (format: yyyy-MM-dd).",
            "schema": {
              "$ref": "#/components/schemas/MeteredvolumeDetailsGetRequest"
            }
          },
          {
            "name": "endDate",
            "in": "query",
            "required": false,
            "description": "Any date up to current date but after startDate. If left blank, only data for startDate will be returned (format: yyyy-MM-dd).",
            "schema": {
              "$ref": "#/components/schemas/MeteredvolumeDetailsGetRequest-1"
            }
          },
          {
            "name": "asset_ID",
            "in": "query",
            "required": false,
            "description": "This parameter can contain up to 20 comma-separated Asset IDs.",
            "schema": {
              "$ref": "#/components/schemas/MeteredvolumeDetailsGetRequest-2"
            }
          },
          {
            "name": "pool_participant_ID",
            "in": "query",
            "required": false,
            "description": "This parameter can contain up to 20 comma-separated Pool Participant IDs.",
            "schema": {
              "$ref": "#/components/schemas/MeteredvolumeDetailsGetRequest-3"
            }
          }
        ]
      }
    }
  },
  "components": {
    "securitySchemes": {
      "apiKeyHeader": {
        "type": "apiKey",
        "name": "API-KEY",
        "in": "header"
      },
      "apiKeyQuery": {
        "type": "apiKey",
        "name": "subscription-key",
        "in": "query"
      }
    },
    "schemas": {
      "AssetList": {
        "type": "object",
        "properties": {
          "asset_ID": {
            "type": "string",
            "description": "Asset's unique short name defined by 3 or 4-digit alphanumeric code. A pool asset is registered to a pool participant."
          },
          "asset_class": {
            "type": "string",
            "description": "Asset classification for Sink and Source assets."
          },
          "metered_volume_list": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/MeteredVolumes"
            }
          }
        }
      },
      "MeteredVolumes": {
        "type": "object",
        "properties": {
          "begin_date_utc": {
            "type": "string",
            "description": "The begin timestamp of the settlement hour, in UTC."
          },
          "begin_date_mpt": {
            "type": "string",
            "description": "The begin timestamp of the settlement hour, in MPT (Mountain Prevailing Time)."
          },
          "metered_volume": {
            "type": "string",
            "description": "Metered Volume of the asset in the settlement hour (in MW)."
          }
        }
      },
      "MeteredVolumeReport": {
        "type": "object",
        "properties": {
          "pool_participant_ID": {
            "type": "string",
            "description": "Pool Participant's unique short name defined by 3 or 4-digit alphanumeric code. A pool participant is a market participant who is registered to transact electric energy. "
          },
          "asset_list": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/AssetList"
            }
          }
        }
      },
      "MeteredvolumeDetailsGetRequest": {
        "pattern": "^\\d{4}\\-(0[1-9]|1[012])\\-(0[1-9]|[12][0-9]|3[01])$",
        "type": "string",
        "x-apim-inline": true
      },
      "MeteredvolumeDetailsGetRequest-1": {
        "pattern": "^\\d{4}\\-(0[1-9]|1[012])\\-(0[1-9]|[12][0-9]|3[01])$",
        "type": "string",
        "x-apim-inline": true
      },
      "MeteredvolumeDetailsGetRequest-2": {
        "type": "string",
        "x-apim-inline": true
      },
      "MeteredvolumeDetailsGetRequest-3": {
        "type": "string",
        "x-apim-inline": true
      }
    }
  },
  "security": [
    {},
    {
      "apiKeyHeader": []
    },
    {
      "apiKeyQuery": []
    }
  ],
  "x-provenance": {
    "harvestedBy": "API Evangelist",
    "harvestedOn": "2026-07-27",
    "sourcePortal": "https://developer-apim.aeso.ca/",
    "method": "Assembled verbatim from the AESO Azure API Management developer-portal data API, which is served anonymously. AESO's own OpenAPI export (?export=true&format=openapi) returns a valid document with an EMPTY paths object, so paths, parameters, responses, examples and component schemas were read from the portal's operations/ and schemas/ endpoints and reassembled without alteration. Nothing was invented.",
    "sources": [
      {
        "url": "https://developer-apim.aeso.ca/developer/apis/meteredvolume-api-v1?api-version=2022-04-01-preview",
        "status": 200,
        "note": "API metadata"
      },
      {
        "url": "https://developer-apim.aeso.ca/developer/apis/meteredvolume-api-v1?export=true&format=openapi%2Bjson&api-version=2022-04-01-preview",
        "status": 200,
        "note": "AESO OpenAPI export (empty paths) - basis for info/servers/security"
      },
      {
        "url": "https://developer-apim.aeso.ca/developer/apis/meteredvolume-api-v1/operations?api-version=2022-04-01-preview",
        "status": 200,
        "note": "operation list"
      },
      {
        "url": "https://developer-apim.aeso.ca/developer/apis/meteredvolume-api-v1/schemas?api-version=2022-04-01-preview",
        "status": 200,
        "note": "schema list"
      },
      {
        "url": "https://developer-apim.aeso.ca/developer/apis/meteredvolume-api-v1/operations/getMeteredVolumeReport?api-version=2022-04-01-preview",
        "status": 200,
        "note": "operation detail"
      },
      {
        "url": "https://developer-apim.aeso.ca/developer/apis/meteredvolume-api-v1/schemas/675b199a3d594b1e2075ef27?api-version=2022-04-01-preview",
        "status": 200,
        "note": "schema document"
      }
    ]
  }
}
AESO Metered Volume Report API

Documentation

Specifications

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OpenAPI Specification
