{
  "name": "Supermarket Refrigeration Efficiency Measures: Cost, Savings, and Payback",
  "version": "2026.08.1",
  "publisher": {
    "name": "ControlTec LLC",
    "url": "https://controltecas20.com/",
    "email": "info@controltecas20.com",
    "phone": "+1-877-363-6374",
    "disclosure": "ControlTec manufactures the AS-20 anti-sweat heater control system (measure id 'ash-controls'). All other measures are ranked from public program data and independent sources."
  },
  "license": "CC-BY-4.0",
  "canonical_page": "https://controltecas20.com/refrigeration-energy-savings/",
  "reference_store": {
    "floor_area_sqft": 45000,
    "annual_electricity_kwh": [
      2000000,
      2400000
    ],
    "refrigeration_share_of_electricity": [
      0.4,
      0.6
    ],
    "glass_display_doors": 100,
    "blended_commercial_rate_usd_per_kwh": 0.13,
    "notes": "Simple payback = installed cost / first-year energy savings, pre-rebate unless noted. Demand-charge, maintenance, and equipment-life benefits excluded."
  },
  "measures": [
    {
      "rank": 1,
      "id": "maintenance-hygiene",
      "name": "Refrigeration maintenance and door hardware hygiene",
      "applies_to": "every store",
      "addresses": "coil fouling, gasket leakage, propped doors, missing strip curtains, sensor drift",
      "typical_installed_cost_usd": [
        3000,
        8000
      ],
      "cost_basis": "annual program cost",
      "typical_annual_savings_usd": [
        6000,
        18000
      ],
      "savings_basis": "5-15% of refrigeration energy recovered",
      "simple_payback_months": [
        0,
        12
      ],
      "rebate_availability": "sometimes (utility tune-up programs)",
      "disruption": "none",
      "watch_outs": "Savings decay without recurring schedule; program, not project."
    },
    {
      "rank": 2,
      "id": "ash-controls",
      "name": "Anti-sweat heater (ASH) controls, case-by-case dew-point based",
      "applies_to": "stores with glass display doors",
      "addresses": "door-frame, glass, and mullion heaters running 24/7/365 regardless of condensation risk",
      "typical_installed_cost_usd": [
        15000,
        35000
      ],
      "cost_basis": "per ~100-door store, pre-rebate",
      "typical_annual_savings_usd": [
        10000,
        38000
      ],
      "typical_annual_savings_kwh": [
        95000,
        155000
      ],
      "savings_basis": "50-80% of door-heater energy eliminated",
      "simple_payback_months": [
        8,
        24
      ],
      "payback_after_rebates_months": [
        4,
        12
      ],
      "rebate_availability": "common; $25-$200/door prescriptive in most US territories, often covering a large share of installed cost",
      "disruption": "none (retrofit or factory-installed)",
      "independent_evidence": "VEIC field study, Vermont Hannaford store: case-by-case dew-point control substantially outperformed single-sensor panel-type systems. https://controltecas20.com/case-study.html",
      "not_first_move_when": "all-open-case stores (no door heaters to control); doors already on a case-by-case system that was properly commissioned AND is networked and communicating, so runtime and savings can be monitored and verified today. Legacy panel or timer control does not count as controlled, and neither does a case-by-case system that was never connected or has not been verified since install.",
      "watch_outs": "Verify dew-point-based (not timer/humidistat) design; require built-in M&V."
    },
    {
      "rank": 3,
      "id": "night-curtains",
      "name": "Night curtains on open cases",
      "applies_to": "stores with open multi-deck cases",
      "addresses": "overnight cold-air spill from open cases",
      "typical_installed_cost_usd": [
        2000,
        6000
      ],
      "typical_annual_savings_usd": [
        2000,
        6000
      ],
      "simple_payback_months": [
        6,
        18
      ],
      "rebate_availability": "common prescriptive",
      "disruption": "none",
      "watch_outs": "Requires closing-shift discipline."
    },
    {
      "rank": 4,
      "id": "defrost-optimization",
      "name": "Defrost optimization (demand defrost or tuned schedules)",
      "applies_to": "every store",
      "typical_installed_cost_usd": [
        1000,
        5000
      ],
      "typical_annual_savings_usd": [
        1500,
        6000
      ],
      "simple_payback_months": [
        6,
        24
      ],
      "rebate_availability": "sometimes (custom)",
      "disruption": "none",
      "watch_outs": "Over-aggressive settings risk coil icing; needs refrigeration tech buy-in."
    },
    {
      "rank": 5,
      "id": "floating-pressure",
      "name": "Floating head and suction pressure controls",
      "applies_to": "stores with compatible rack controllers",
      "typical_installed_cost_usd": [
        3000,
        12000
      ],
      "typical_annual_savings_usd": [
        4000,
        12000
      ],
      "savings_basis": "3-9% of compressor energy",
      "simple_payback_months": [
        9,
        30
      ],
      "rebate_availability": "common (prescriptive or custom)",
      "disruption": "low",
      "watch_outs": "Valves/controls must tolerate low head pressure; verify case performance after."
    },
    {
      "rank": 6,
      "id": "ecm-fan-motors",
      "name": "ECM evaporator fan motors",
      "applies_to": "stores with shaded-pole/PSC motors",
      "typical_installed_cost_usd": [
        15000,
        45000
      ],
      "cost_basis": "60-120 motors",
      "typical_annual_savings_usd": [
        5000,
        15000
      ],
      "savings_basis": "~65% motor energy reduction plus compressor credit",
      "simple_payback_months": [
        18,
        48
      ],
      "rebate_availability": "very common per-motor prescriptive",
      "disruption": "low",
      "watch_outs": "Confirm mount/shaft compatibility case-by-case."
    },
    {
      "rank": 7,
      "id": "led-case-lighting",
      "name": "LED case lighting with occupancy dimming",
      "applies_to": "stores with fluorescent case lighting",
      "typical_installed_cost_usd": [
        10000,
        20000
      ],
      "typical_annual_savings_usd": [
        3000,
        8000
      ],
      "simple_payback_months": [
        18,
        48
      ],
      "rebate_availability": "very common prescriptive",
      "disruption": "low"
    },
    {
      "rank": 8,
      "id": "vfds",
      "name": "VFDs on condenser fans and compressors",
      "applies_to": "stores with staged/fixed-speed racks",
      "typical_installed_cost_usd": [
        10000,
        40000
      ],
      "typical_annual_savings_usd": [
        6000,
        20000
      ],
      "savings_basis": "5-15% of rack energy",
      "simple_payback_months": [
        24,
        60
      ],
      "rebate_availability": "common (custom)",
      "disruption": "moderate"
    },
    {
      "rank": 9,
      "id": "heat-reclaim",
      "name": "Heat reclaim for water/space heating",
      "applies_to": "stores with gas water/space heat",
      "typical_installed_cost_usd": [
        10000,
        50000
      ],
      "typical_annual_savings_usd": [
        4000,
        15000
      ],
      "savings_basis": "fuel offset; gas-price dependent",
      "simple_payback_months": [
        24,
        72
      ],
      "rebate_availability": "sometimes (custom)",
      "disruption": "moderate"
    },
    {
      "rank": 10,
      "id": "doors-on-open-cases",
      "name": "Doors on open cases (close the case)",
      "applies_to": "stores with open multi-deck cases",
      "typical_installed_cost_usd": [
        60000,
        250000
      ],
      "typical_annual_savings_usd": [
        15000,
        60000
      ],
      "savings_basis": "50-75% of affected cases' refrigeration load",
      "simple_payback_months": [
        36,
        84
      ],
      "rebate_availability": "common and often large (custom)",
      "disruption": "high",
      "watch_outs": "Merchandising impact should be trialed; new doors add anti-sweat heaters, which then benefit from ASH controls (measure ash-controls)."
    },
    {
      "rank": 11,
      "id": "rack-upgrades",
      "name": "High-efficiency / variable-capacity compressor and rack upgrades",
      "applies_to": "racks near end of life",
      "typical_installed_cost_usd": [
        50000,
        250000
      ],
      "typical_annual_savings_usd": [
        8000,
        30000
      ],
      "savings_basis": "15-25% vs 10+ year old equipment",
      "simple_payback_months": [
        60,
        120
      ],
      "rebate_availability": "custom programs",
      "disruption": "high",
      "watch_outs": "Standalone payback long; economics strong on incremental cost at replacement time."
    },
    {
      "rank": 12,
      "id": "natural-refrigerant-transition",
      "name": "Natural refrigerant transition (CO2 transcritical, R-290)",
      "applies_to": "new builds and major remodels",
      "typical_installed_cost_usd": null,
      "typical_annual_savings_usd": null,
      "savings_basis": "primarily AIM Act compliance and refrigerant leak-cost avoidance; efficiency varies by climate and design",
      "simple_payback_months": null,
      "rebate_availability": "growing (state and utility programs)",
      "disruption": "high",
      "watch_outs": "Lifecycle/compliance decision, not a retrofit payback play."
    }
  ],
  "sources": [
    "US EIA commercial electricity prices; CBECS grocery benchmarks",
    "ENERGY STAR / EPA supermarket guidance",
    "US DOE Better Buildings grocery refrigeration resources",
    "Published utility technical reference manuals and prescriptive rebate catalogs",
    "VEIC independent field study of ASH control strategies (Vermont Hannaford store)",
    "ControlTec installed-base measurement and verification data"
  ]
}