Electricity bill calculator

Open Electricity bill calculator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "electricity-bill-calculator",
  "category": "calculators",
  "built": true,
  "requirements": "Runs locally with bounded numeric inputs and returns a complete JSON result. Tariffs, efficiency and usage are not looked up.",
  "implementation": {
    "fields": [
      {
        "key": "usageKwh",
        "label": "Usage (kWh)",
        "value": 300,
        "type": "number",
        "min": 0,
        "step": "any"
      },
      {
        "key": "pricePerKwh",
        "label": "Price per kWh",
        "value": 0.3,
        "type": "number",
        "min": 0,
        "step": "any"
      },
      {
        "key": "fixedCharge",
        "label": "Fixed charge",
        "value": 10,
        "type": "number",
        "min": 0,
        "step": "any"
      },
      {
        "key": "taxPercent",
        "label": "Tax (%)",
        "value": 10,
        "type": "number",
        "min": 0,
        "step": "any",
        "max": 100
      }
    ],
    "input": false,
    "presentation": "metrics",
    "note": "Runs locally in your browser. Enter your own power, usage, efficiency and tariff assumptions; no live tariff lookup is performed. Results are estimates, not utility bills or engineering advice.",
    "example": {
      "input": "",
      "options": {
        "usageKwh": 300,
        "pricePerKwh": 0.3,
        "fixedCharge": 10,
        "taxPercent": 10
      }
    },
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Energy assumptions JSON",
      "placeholder": "{\n  \"usageKwh\": 300,\n  \"pricePerKwh\": 0.3,\n  \"fixedCharge\": 10,\n  \"taxPercent\": 10\n}",
      "help": "Use the documented numeric fields. Up to 1,000,000 characters. Review the settings before running.",
      "helpParts": [
        "Use the documented numeric fields.",
        "Up to 1,000,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide