{
  "slug": "phantom-load-audit",
  "title": "Phantom Load / Standby Power Audit Calculator",
  "heading": "Phantom Load Audit Calculator",
  "category": "financial",
  "url": "https://www.revenuelab.fyi/toolbox/phantom-load-audit",
  "summary": "What always-on devices are quietly costing you per year.",
  "description": "Phantom or standby load is the power devices draw while 'off' but still plugged in — TVs, game consoles, cable boxes, chargers, and countless small transformers. Individually these look trivial (2-15W each) but a typical US home has 20-40 such devices, and DOE studies put total phantom load at 5-10% of residential electricity use, roughly $100-$200 per year for the average household. This calculator sums the standby wattage of your devices, converts continuous draw into annual kWh and cost, and shows what a smart power strip or unplugging habit on the worst offenders would actually save — often more impactful than people expect for something that requires zero behavior change once set up.",
  "formula": "Annual kWh = (total standby watts ÷ 1000) × 24 × 365; annual cost = annual kWh × electricity rate.",
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=phantom-load-audit",
  "inputs": [
    {
      "id": "deviceCount",
      "label": "Number of always-plugged-in devices",
      "kind": "number",
      "hint": null,
      "default": 25,
      "unit": null,
      "min": 1,
      "max": null
    },
    {
      "id": "avgWatts",
      "label": "Average standby draw per device",
      "kind": "number",
      "hint": null,
      "default": 4,
      "unit": "W",
      "min": 0.5,
      "max": 30
    },
    {
      "id": "elecRate",
      "label": "Electricity rate",
      "kind": "number",
      "hint": null,
      "default": 0.16,
      "unit": "$/kWh",
      "min": 0.02,
      "max": 0.6
    },
    {
      "id": "reducibleSharePct",
      "label": "Share you could realistically eliminate",
      "kind": "number",
      "hint": null,
      "default": 50,
      "unit": "%",
      "min": 0,
      "max": 100
    }
  ],
  "outputs": [
    {
      "id": "annualCost",
      "label": "Estimated annual phantom load cost",
      "format": "currency",
      "hint": null,
      "primary": true
    },
    {
      "id": "potentialSavings",
      "label": "Realistic savings from cutting the worst offenders",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "annualKwh",
      "label": "Annual phantom load energy",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "totalWatts",
      "label": "Total continuous standby draw",
      "format": "number",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Number of always-plugged-in devices: 25",
      "Average standby draw per device: 4 W",
      "Electricity rate: 0.16 $/kWh",
      "Share you could realistically eliminate: 50 %"
    ],
    "outputs": [
      "Estimated annual phantom load cost: $140",
      "Realistic savings from cutting the worst offenders: $70",
      "Annual phantom load energy: 876",
      "Total continuous standby draw: 100"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter number of always-plugged-in devices.",
      "Enter average standby draw per device (W).",
      "Enter electricity rate ($/kWh).",
      "Enter share you could realistically eliminate (%).",
      "Read your estimated annual phantom load cost on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "deviceCount": 15,
        "avgWatts": 2.4,
        "elecRate": 0.096,
        "reducibleSharePct": 30
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "deviceCount": 25,
        "avgWatts": 4,
        "elecRate": 0.16,
        "reducibleSharePct": 50
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "deviceCount": 40,
        "avgWatts": 6.4,
        "elecRate": 0.256,
        "reducibleSharePct": 80
      }
    }
  ],
  "limitations": [
    "Results are estimates before tax, fees, and inflation unless an input explicitly covers them.",
    "Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.",
    "This is educational maths, not financial advice. Check anything contractual with the lender or your accountant."
  ],
  "faq": [
    {
      "q": "What actually draws the most standby power?",
      "a": "Game consoles left in 'instant on' mode (10-20W), desktop computers and monitors in sleep mode (5-15W), cable/satellite DVR boxes (15-30W, often the single worst offender since they rarely truly sleep), and older plasma or CRT-era TVs. A $20 plug-in watt meter (Kill A Watt) will find your specific worst offenders in an afternoon."
    },
    {
      "q": "Is unplugging everything worth the hassle?",
      "a": "No — target the top 3-5 offenders (usually the DVR, a game console, and a desktop PC setup) rather than obsessively unplugging phone chargers that draw under 0.5W. A smart power strip on your entertainment center or office setup that cuts power to peripherals when the main device is off captures most of the achievable savings automatically."
    },
    {
      "q": "Does unplugging a DVR cause problems?",
      "a": "Cable/satellite DVRs often need to stay on to record scheduled shows and receive guide updates, so this is one case where standby power is a real tradeoff, not just waste — check whether your provider's DVR has a legitimate low-power standby mode versus just leaving it fully active 24/7."
    },
    {
      "q": "How accurate is a household-wide estimate like this without measuring devices?",
      "a": "It's a reasonable planning estimate — DOE and EPRI field studies consistently find 5-10% of residential electricity use going to standby/phantom loads across thousands of homes. For a precise number for your house, a $20-30 plug-in meter tested on your dozen highest-suspicion devices for a week gives a far more accurate figure than any generic estimate."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/kwh-bill-breakdown",
    "https://www.revenuelab.fyi/toolbox/time-of-use-shifting"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Phantom Load / Standby Power Audit Calculator (https://www.revenuelab.fyi/toolbox/phantom-load-audit)"
}