{
  "provider": {
    "name": "CalculateEnergySavings.com",
    "source_url": "https://calculateenergysavings.com/",
    "terms_url": "https://calculateenergysavings.com/api-terms/",
    "terms_version": "2026-08-25"
  },
  "id": "chp-screening",
  "name": "Combined Heat & Power Screening Calculator",
  "description": "Estimate electric and useful-thermal value from a continuously loaded CHP system.",
  "status": "published",
  "callable": true,
  "version": "1.0.0",
  "url": "https://calculateenergysavings.com/calculators/chp-screening/",
  "methodology_url": "https://calculateenergysavings.com/calculators/chp-screening/#methodology",
  "api_url": "https://calculateenergysavings.com/api/v1/calculators/chp-screening",
  "calculate_url": "https://calculateenergysavings.com/api/v1/calculators/chp-screening/calculate",
  "input_schema": {
    "type": "object",
    "additionalProperties": false,
    "properties": {
      "electricCapacityKw": {
        "type": "number",
        "default": 500,
        "title": "Electric capacity",
        "x-unit": "kW"
      },
      "hours": {
        "type": "number",
        "default": 7000,
        "title": "Annual operating hours",
        "x-unit": "hrs/year"
      },
      "electricEfficiencyPercent": {
        "type": "number",
        "default": 35,
        "title": "Electric efficiency",
        "x-unit": "%"
      },
      "recoverableHeatPercentOfFuel": {
        "type": "number",
        "default": 45,
        "title": "Recoverable heat",
        "x-unit": "% of fuel input"
      },
      "thermalUtilizationPercent": {
        "type": "number",
        "default": 80,
        "title": "Useful-heat utilization",
        "x-unit": "%"
      },
      "fuelCostPerMmbtu": {
        "type": "number",
        "default": 8,
        "title": "CHP fuel cost",
        "x-unit": "$/MMBtu"
      },
      "displacedHeatEfficiencyPercent": {
        "type": "number",
        "default": 80,
        "title": "Displaced boiler efficiency",
        "x-unit": "%"
      },
      "annualOperatingMaintenanceCost": {
        "type": "number",
        "default": 75000,
        "title": "Annual CHP O&M",
        "x-unit": "$/year"
      },
      "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": {
    "electricCapacityKw": 500,
    "hours": 7000,
    "electricEfficiencyPercent": 35,
    "recoverableHeatPercentOfFuel": 45,
    "thermalUtilizationPercent": 80,
    "fuelCostPerMmbtu": 8,
    "displacedHeatEfficiencyPercent": 80,
    "annualOperatingMaintenanceCost": 75000,
    "electricityRate": 0.12,
    "installedCost": "",
    "incentiveAmount": 0,
    "annualMaintenanceSavings": 0,
    "projectLife": 15,
    "discountRatePercent": 7,
    "energyEscalationPercent": 2.5
  },
  "source_url": "https://www.nrel.gov/reopt/",
  "formulas": [
    "Fuel input derives from electric output divided by electric efficiency.",
    "Net value combines avoided electricity and utilized thermal value, less CHP fuel and O&M cost."
  ],
  "disclaimer": "Screening estimate only. Verify measurements, assumptions, tariffs, equipment constraints, and applicable requirements before making a project or purchasing decision."
}