{
  "provider": {
    "name": "CalculateEnergySavings.com",
    "source_url": "https://calculateenergysavings.com/",
    "terms_url": "https://calculateenergysavings.com/api-terms/",
    "terms_version": "2026-08-25"
  },
  "id": "transformer-loss",
  "name": "Transformer Loss Comparison",
  "description": "Compare annual no-load and load losses for two transformers at a representative load.",
  "status": "published",
  "callable": true,
  "version": "1.0.0",
  "url": "https://calculateenergysavings.com/calculators/transformer-loss/",
  "methodology_url": "https://calculateenergysavings.com/calculators/transformer-loss/#methodology",
  "api_url": "https://calculateenergysavings.com/api/v1/calculators/transformer-loss",
  "calculate_url": "https://calculateenergysavings.com/api/v1/calculators/transformer-loss/calculate",
  "input_schema": {
    "type": "object",
    "additionalProperties": false,
    "properties": {
      "averageLoadPercent": {
        "type": "number",
        "default": 45,
        "title": "Average per-unit load",
        "x-unit": "%",
        "description": "Enter average kVA load as a percentage of each transformer's rating"
      },
      "hours": {
        "type": "number",
        "default": 8760,
        "title": "Energized hours",
        "x-unit": "hrs/year"
      },
      "existingNoLoadKw": {
        "type": "number",
        "default": 2.2,
        "title": "Existing no-load loss",
        "x-unit": "kW"
      },
      "existingLoadLossKw": {
        "type": "number",
        "default": 10,
        "title": "Existing full-load loss",
        "x-unit": "kW"
      },
      "proposedNoLoadKw": {
        "type": "number",
        "default": 1.5,
        "title": "Proposed no-load loss",
        "x-unit": "kW"
      },
      "proposedLoadLossKw": {
        "type": "number",
        "default": 7,
        "title": "Proposed full-load loss",
        "x-unit": "kW"
      },
      "electricityRate": {
        "type": "number",
        "default": 0.12
      },
      "installedCost": {
        "type": "number"
      },
      "incentiveAmount": {
        "type": "number",
        "default": 0
      },
      "annualMaintenanceSavings": {
        "type": "number",
        "default": 0
      },
      "projectLife": {
        "type": "number",
        "default": 15
      },
      "discountRatePercent": {
        "type": "number",
        "default": 7
      },
      "energyEscalationPercent": {
        "type": "number",
        "default": 2.5
      }
    }
  },
  "example_inputs": {
    "averageLoadPercent": 45,
    "hours": 8760,
    "existingNoLoadKw": 2.2,
    "existingLoadLossKw": 10,
    "proposedNoLoadKw": 1.5,
    "proposedLoadLossKw": 7,
    "electricityRate": 0.12,
    "installedCost": "",
    "incentiveAmount": 0,
    "annualMaintenanceSavings": 0,
    "projectLife": 15,
    "discountRatePercent": 7,
    "energyEscalationPercent": 2.5
  },
  "source_url": "https://www.energy.gov/cmei/ito/measur",
  "formulas": [
    "Total loss kW = no-load loss + full-load loss × load fraction².",
    "Annual loss energy = total loss kW × energized hours."
  ],
  "disclaimer": "Screening estimate only. Verify measurements, assumptions, tariffs, equipment constraints, and applicable requirements before making a project or purchasing decision."
}