{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "description": "residential electric utility bill with a charges breakdown and a meter reading",
  "properties": {
    "billingPeriodStart": {
      "type": "string",
      "description": "the start date of the billing period in YYYY-MM-DD."
    },
    "billingPeriodEnd": {
      "type": "string",
      "description": "the end date of the billing period in YYYY-MM-DD."
    },
    "previousMeterRead": {
      "type": "number",
      "description": "the previous meter reading."
    },
    "currentMeterRead": {
      "type": "number",
      "description": "the current meter reading."
    },
    "consumptionKwh": {
      "type": "number",
      "description": "the metered electricity consumption in kWh for the period."
    },
    "charges": {
      "type": "array",
      "description": "the electric charge line items, each a charge name and its amount. exclude the total/summary row.",
      "items": {
        "type": "object",
        "properties": {
          "description": {
            "type": "string",
            "description": "the charge name as printed on the line."
          },
          "amount": {
            "type": "number",
            "description": "the charge amount."
          }
        }
      }
    },
    "totalElectricBill": {
      "type": "number",
      "description": "the total electric bill amount, equal to the sum of the charge lines."
    }
  }
}