Home battery sizing calculator

Open Home battery sizing 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": "home-battery-sizing-calculator",
  "category": "calculators",
  "built": true,
  "requirements": "Energy 0 to 1 million kWh per reference period; evening period above 0 to 24 hours; autonomy above 0 to 8,760 hours total, including day conversion; peak 0 to 1 million kW. Positive depth of discharge, round-trip efficiency and retained-capacity factors up to 100%; inverter headroom 0 to 100%. Appliance mode: up to 100 rows, 100,000 characters, quantity 1 to 10,000, power 0 to 1 million W and duty-cycle time 0 to 24 h/day. JSON report, results CSV, battery-budget CSV and appliance CSV.",
  "implementation": {
    "fields": [
      {
        "key": "loadMode",
        "label": "Load input",
        "value": "Daily energy",
        "type": "select",
        "values": [
          "Daily energy",
          "Evening energy",
          "Appliance list"
        ]
      },
      {
        "key": "load",
        "label": "Energy in the load period (kWh)",
        "value": 10,
        "type": "number",
        "min": 0,
        "max": 1000000,
        "step": "any",
        "showWhen": {
          "loadMode": [
            "Daily energy",
            "Evening energy"
          ]
        }
      },
      {
        "key": "eveningHours",
        "label": "Hours represented by the evening load",
        "value": 6,
        "type": "number",
        "min": 0,
        "max": 24,
        "step": "any",
        "showWhen": {
          "loadMode": [
            "Evening energy"
          ]
        }
      },
      {
        "key": "appliances",
        "label": "Appliance loads",
        "value": "",
        "type": "textarea",
        "maxLength": 100000,
        "help": "One row per appliance: name, quantity, running W and hours per day. Enter daily duty-cycle hours, not 24 hours for intermittent loads.",
        "showWhen": {
          "loadMode": [
            "Appliance list"
          ]
        }
      },
      {
        "key": "autonomyUnit",
        "label": "Autonomy unit",
        "value": "Hours",
        "type": "select",
        "values": [
          "Hours",
          "Days"
        ]
      },
      {
        "key": "autonomy",
        "label": "Autonomy duration",
        "value": 24,
        "type": "number",
        "min": 0,
        "max": 8760,
        "step": "any"
      },
      {
        "key": "depthOfDischarge",
        "label": "Allowed depth of discharge (%)",
        "value": 80,
        "type": "number",
        "min": 0,
        "max": 100,
        "step": "any"
      },
      {
        "key": "roundTripEfficiency",
        "label": "Round-trip efficiency (%)",
        "value": 90,
        "type": "number",
        "min": 0,
        "max": 100,
        "step": "any",
        "help": "A full-cycle efficiency allowance is applied to nominal storage. This conservative budget is not the same as one-way discharge efficiency."
      },
      {
        "key": "peakKw",
        "label": "Peak simultaneous load (kW)",
        "value": 3,
        "type": "number",
        "min": 0,
        "max": 1000000,
        "step": "any"
      },
      {
        "key": "inverterHeadroom",
        "label": "Additional inverter headroom (%)",
        "value": 0,
        "type": "number",
        "min": 0,
        "max": 100,
        "step": "any"
      },
      {
        "key": "temperatureCapacity",
        "label": "Capacity retained at operating temperature (%)",
        "value": 100,
        "type": "number",
        "min": 0,
        "max": 100,
        "step": "any",
        "help": "100 means no derating. Enter a manufacturer-supported retained-capacity factor to model temperature."
      },
      {
        "key": "agedCapacity",
        "label": "Capacity retained at the planned age (%)",
        "value": 100,
        "type": "number",
        "min": 0,
        "max": 100,
        "step": "any",
        "help": "100 means no ageing derating. No ageing curve is inferred."
      }
    ],
    "registrationFamily": "home-energy-planning",
    "input": false,
    "live": false,
    "presentation": "metrics",
    "note": "Calculated on your device. Daily, evening or appliance-list loads are spread uniformly across their stated period when scaled to autonomy. Peak power is entered separately.",
    "inputKeywords": [
      {
        "id": "home-energy-planning/home-battery-sizing-calculator/appliances.header",
        "kind": "header",
        "code": "HOME_ENERGY_PLANNING_APPLIANCE_HEADER",
        "fold": "lower",
        "values": {
          "appliance": [
            "appliance",
            "Appliance"
          ],
          "quantity": [
            "quantity",
            "Appliance count"
          ],
          "watts": [
            "watts",
            "Watts"
          ],
          "hours": [
            "hours",
            "Hours"
          ]
        },
        "describedBy": [
          "Name the columns Appliance, Quantity, Watts and Hours, in that order, or omit the header.",
          "Appliance loads"
        ]
      }
    ],
    "experience": {
      "automatic": false,
      "single": true,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Battery load settings",
      "placeholder": "Use the fields below",
      "help": "Choose daily energy, evening energy or an appliance list in the settings. Appliance rows are name, quantity, running W and hours per day. Up to 1,000,000 characters. Review the settings before running.",
      "helpParts": [
        "Choose daily energy, evening energy or an appliance list in the settings. Appliance rows are name, quantity, running W and hours per day.",
        "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"
  }
}

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