# Home Energy Household Load Calculator

> Home Energy Household Load Calculator is a paid API for AI agents from home-energy-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Totals a list of home appliances (by watts, hours/day, and quantity) into kWh and cost breakdowns per day, month, and year, with each appliance's share of total consumption.

## Facts

- Endpoint: GET https://home-energy-calc.x402tookit.com/household-load?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/home-energy-household-load-calculator-bb4ba46d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zKI21vDXBNn8yBYNYjQQ4

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability home-energy-household-load-calculator-bb4ba46d
```

Example prompt: Can you calculate my total home electricity cost? I have a fridge at 150W running 24h/day, a TV at 100W for 4h/day, and 10 LED bulbs at 9W each for 5h/day — electricity costs me $0.13 per kWh.

## When to prefer this

Choose this endpoint when you need to aggregate multiple appliances into a single household energy and cost summary with per-device breakdowns and share percentages. It is ideal for home energy audits, budget estimation, and consumption analysis across a full list of devices. Prefer it over a simple bill estimator when you have individual appliance data and want itemized attribution, not just a total kWh input.

## Known failure modes

- Missing required 'appliances' query parameter returns an error
- Missing or zero 'pricePerKwh' returns an error (must be above 0)
- Malformed appliance string format (wrong delimiter or missing required fields) causes parse failure
- standbyWatts outside 0–2000 range may be rejected
- Appliance entries with zero or negative wattage may be flagged or ignored

## How this service works

Total a list of appliances (watts, hours a day, quantity) into kWh and cost per day, month and year, with each one's share.

## Output

Returns a structured object with total kWh and cost per day, month, and year for the entire household load, plus a per-appliance array showing each item's name, watts, hours/day, quantity, days/year, kWh per month, kWh per year, cost per year, and share percentage of total consumption. Also includes average watts and optional summary/disclaimer text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "appliances",
      "pricePerKwh"
     ],
     "properties": {
      "appliances": {
       "type": "string",
       "description": "Lines name:watts:hoursPerDay[:quantity[:daysPerYear]] separated by semicolons, for example 'fridge:150:8; led bulb:9:5:12; tv:100:4'"
      },
      "pricePerKwh": {
       "type": "number",
       "description": "Electricity price per kWh, above 0 (any currency)"
      },
      "standbyWatts": {
       "type": "number",
       "description": "Always-on standby load in watts for the whole home, 0 to 2000 (default 0)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "appliances": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "object",
        "properties": {
         "name": {
          "type": [
           "null",
           "string"
          ]
         },
         "watts": {
          "type": [
           "null",
           "number"
          ]
         },
         "quantity": {
          "type": [
           "null",
           "number"
          ]
         },
         "kwhPerYear": {
          "type": [
           "null",
           "number"
          ]
         },
         "costPerYear": {
          "type": [
           "null",
           "number"
          ]
         }
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/home-energy-household-load-calculator-bb4ba46d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from home-energy-calc.x402tookit.com](https://www.zero.xyz/host/home-energy-calc.x402tookit.com/llms.txt)