{
  "provider": {
    "name": "CalculateEnergySavings.com",
    "source_url": "https://calculateenergysavings.com/",
    "terms_url": "https://calculateenergysavings.com/api-terms/",
    "terms_version": "2026-08-25"
  },
  "id": "thermal-energy-storage",
  "name": "Thermal Energy Storage Screening Calculator",
  "description": "Estimate demand and time-of-use value from shifting cooling energy to off-peak hours.",
  "status": "published",
  "callable": true,
  "version": "1.0.0",
  "url": "https://calculateenergysavings.com/calculators/thermal-energy-storage/",
  "methodology_url": "https://calculateenergysavings.com/calculators/thermal-energy-storage/#methodology",
  "api_url": "https://calculateenergysavings.com/api/v1/calculators/thermal-energy-storage",
  "calculate_url": "https://calculateenergysavings.com/api/v1/calculators/thermal-energy-storage/calculate",
  "input_schema": {
    "type": "object",
    "additionalProperties": false,
    "properties": {
      "shiftedCoolingKwh": {
        "type": "number",
        "default": 200000,
        "title": "Annual cooling shifted",
        "x-unit": "kWh"
      },
      "storageEfficiencyPercent": {
        "type": "number",
        "default": 85,
        "title": "Round-trip thermal efficiency",
        "x-unit": "%"
      },
      "onPeakRate": {
        "type": "number",
        "default": 0.2,
        "title": "On-peak energy rate",
        "x-unit": "$/kWh"
      },
      "offPeakRate": {
        "type": "number",
        "default": 0.08,
        "title": "Off-peak energy rate",
        "x-unit": "$/kWh"
      },
      "peakReductionKw": {
        "type": "number",
        "default": 200,
        "title": "Peak demand reduction",
        "x-unit": "kW"
      },
      "demandCharge": {
        "type": "number",
        "default": 18,
        "title": "Demand charge",
        "x-unit": "$/kW-month"
      },
      "demandMonths": {
        "type": "number",
        "default": 6,
        "title": "Affected months",
        "x-unit": "months/year"
      },
      "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": {
    "shiftedCoolingKwh": 200000,
    "storageEfficiencyPercent": 85,
    "onPeakRate": 0.2,
    "offPeakRate": 0.08,
    "peakReductionKw": 200,
    "demandCharge": 18,
    "demandMonths": 6,
    "installedCost": "",
    "incentiveAmount": 0,
    "annualMaintenanceSavings": 0,
    "projectLife": 15,
    "discountRatePercent": 7,
    "energyEscalationPercent": 2.5
  },
  "source_url": "https://www.nrel.gov/reopt/",
  "formulas": [
    "Off-peak charging energy = shifted cooling energy ÷ storage efficiency.",
    "Annual value combines energy arbitrage and demand reduction."
  ],
  "disclaimer": "Screening estimate only. Verify measurements, assumptions, tariffs, equipment constraints, and applicable requirements before making a project or purchasing decision."
}