{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/watttime/refs/heads/main/json-structure/watttime-forecast-meta-structure.json",
  "name": "ForecastMeta",
  "description": "ForecastMeta schema from WattTime API",
  "type": "object",
  "properties": {
    "region": {
      "type": "string",
      "description": "Grid region identifier.",
      "example": "CAISO_NORTH"
    },
    "signal_type": {
      "type": "string",
      "description": "Signal type of the forecast.",
      "example": "co2_moer"
    },
    "model": {
      "type": "object",
      "properties": {
        "date": {
          "type": "string",
          "description": "Model version date.",
          "example": "2026-03-01"
        }
      }
    },
    "units": {
      "type": "string",
      "description": "Units for the forecast values.",
      "example": "lbs_co2_per_mwh"
    },
    "generated_at": {
      "type": "datetime",
      "description": "Timestamp when the forecast was generated.",
      "example": "2026-05-03T10:00:00+00:00"
    }
  }
}