Refrigerated warehouses are measured through several lenses: physical capacity, usable space, inventories, energy intensity and refrigerant performance. The figures below identify the geography, population and measurement period for each statistic so that national capacity, study samples and modeled results are not confused.
Key Refrigerated Warehouse Statistics
The most useful refrigerated warehouse statistics span capacity, survey coverage and energy performance:
- In the United States on October 1, 2023, refrigerated warehouses contained 3,695,752 thousand cubic feet of gross refrigerator space.
- In the United States on October 1, 2023, usable refrigerator space totaled 2,990,406 thousand cubic feet.
- In the United States on October 1, 2023, public warehouses held 2,514,133 thousand cubic feet of gross refrigerator space.
- In the United States on October 1, 2023, private and semiprivate warehouses held 1,181,615 thousand cubic feet of gross refrigerator space.
- In the United States on October 1, 2023, gross freezer space totaled 3,153,317 thousand cubic feet.
- In the United States on October 1, 2023, usable freezer space totaled 2,560,227 thousand cubic feet.
- In the United States on October 1, 2021, total gross freezer space was 2,927,256 thousand cubic feet.
- In the United States on October 1, 2021, total usable freezer space was 2,413,438 thousand cubic feet.
- In California on October 1, 2021, gross freezer space measured 330,330 thousand cubic feet.
- In Washington on October 1, 2023, gross freezer space measured 293,510 thousand cubic feet.
- In Wisconsin on October 1, 2023, gross freezer space measured 289,860 thousand cubic feet.
- The USDA Cold Storage survey target population covers more than 800 commercial and public warehouses in the 48 contiguous states storing refrigerated products for at least 30 days.
- The USDA monthly Cold Storage report covers about 150 items in the United States.
- USDA NASS questionnaires are mailed to about 600 firms each month in the United States.
- USDA NASS generally receives responses covering 78% of U.S. storage capacity in its monthly Cold Storage program.
- A Thailand field survey published in 2022 covered 161 cold-storage rooms: 48 chilled and 113 frozen.
- Chilled rooms in that Thailand sample ranged from 37 to 481 kWh per cubic meter-year in specific energy consumption.
- Frozen rooms in that Thailand sample ranged from 46 to 212 kWh per cubic meter-year.
- In a modeled refrigerated automated warehouse, refrigeration equipment used 79.2% of electricity in a 2018 study.
- Photovoltaics produced an average modeled grid-electricity reduction of 16.4% for that warehouse.
Contents
- Key Refrigerated Warehouse Statistics
- U.S. Refrigerated Warehouse Capacity Statistics
- Public, Private and Freezer-Space Refrigerated Warehouse Data
- State-Level Refrigerated Warehouse Capacity
- Cold-Storage Inventory and Survey Coverage
- Refrigerated Warehouse Energy Use and Intensity
- Refrigerant, Efficiency and Emissions Trends
U.S. Refrigerated Warehouse Capacity Statistics
The USDA National Agricultural Statistics Service (NASS) distinguishes gross space from usable space. Its October 1, 2023 summary reports both refrigerator capacity and the separate cooler and freezer categories.
| U.S. capacity measure | Gross space, October 1, 2023 | Usable space, October 1, 2023 |
|---|---|---|
| Refrigerator space | 3,695,752 thousand ft³ | 2,990,406 thousand ft³ |
| Cooler space | 2,204,094 thousand ft³ | 1,811,939 thousand ft³ |
| Freezer space | 3,153,317 thousand ft³ | 2,560,227 thousand ft³ |
Source: Capacity of Refrigerated Warehouses 2023 Summary. Gross space is not usable space, and NASS notes that freezer capacity includes frozen-juice tank storage capacity.
Public warehouses accounted for 2,514,133 thousand cubic feet of gross refrigerator space and 2,061,919 thousand cubic feet of usable refrigerator space in 2023. Private and semiprivate warehouses accounted for 1,181,615 thousand gross and 928,482 thousand usable thousand cubic feet.
The distinction matters when interpreting market scale. Gross capacity describes the surveyed physical space, while usable capacity reflects the space classified as available for storage under the NASS table definitions.
Public, Private and Freezer-Space Refrigerated Warehouse Data
The 2021 NASS freezer table provides a clear split between public warehouses and private or semiprivate facilities.
| Warehouse classification | Gross freezer space, October 1, 2021 | Usable freezer space, October 1, 2021 |
|---|---|---|
| Public warehouses | 2,225,463 thousand ft³ | 1,843,935 thousand ft³ |
| Private and semiprivate warehouses | 701,792 thousand ft³ | 569,504 thousand ft³ |
| United States total | 2,927,256 thousand ft³ | 2,413,438 thousand ft³ |
Source: Capacity of Refrigerated Warehouses 2021 Summary. Totals may not add exactly because of rounding, and some state cells are withheld.
The 2021 figures show why ownership classification should accompany any freezer-capacity statistic. Public and private or semiprivate categories are NASS classifications, not a universal definition of third-party logistics, captive storage or facility ownership in every market.
State-Level Refrigerated Warehouse Capacity
State data show how freezer capacity is distributed within the United States, but individual values remain subject to NASS table conventions and disclosure rules.
| State | Gross freezer space, October 1, 2023 | Usable freezer space, October 1, 2023 |
|---|---|---|
| Washington | 293,510 thousand ft³ | 233,821 thousand ft³ |
| Wisconsin | 289,860 thousand ft³ | 226,271 thousand ft³ |
| New Jersey | 136,905 thousand ft³ | 109,077 thousand ft³ |
| Minnesota | 102,714 thousand ft³ | 78,262 thousand ft³ |
| Massachusetts | 55,013 thousand ft³ | 44,629 thousand ft³ |
Source: Capacity of Refrigerated Warehouses 2023 Summary.
For an earlier reference point, California had 330,330 thousand cubic feet of gross freezer space and 280,197 thousand cubic feet of usable freezer space on October 1, 2021. That California observation comes from the 2021 NASS table, so it should not be treated as a same-date comparison with the 2023 state figures.
State values are reported in thousand cubic feet, and disclosure withholding can affect the completeness of state-level tables. They are capacity observations, not measures of utilization, throughput or inventory value.
Cold-Storage Inventory and Survey Coverage
The USDA NASS Cold Storage survey covers more than 800 commercial and public warehouses in the 48 contiguous states that store refrigerated products for 30 days or more. The program’s target population description is therefore broader than a count of every refrigerated room or every facility with temporary cooling.
The monthly report covers about 150 items and provides estimates for nine regions plus the United States. NASS mails questionnaires to about 600 firms each month, while about 200 additional companies provide responses by email.
NASS states that responses generally cover 78% of U.S. storage capacity. Imputation is used for nonreporting operations, so inventory estimates should be read as survey estimates rather than a census of all refrigerated rooms.
These coverage details are from the Cold Storage Survey Guide. The survey population, response process and item coverage define what the monthly estimates can represent.
Refrigerated Warehouse Energy Use and Intensity
Energy intensity varies by temperature regime, building size, climate, equipment and operating practice. A Thailand field study published in 2022 surveyed 161 cold-storage rooms: 48 chilled and 113 frozen, with store volumes from 20 to 108,220 cubic meters.
| Thailand survey group | Rooms | Specific energy consumption |
|---|---|---|
| Chilled cold stores | 48 | 37–481 kWh/m³-year |
| Frozen cold stores | 113 | 46–212 kWh/m³-year |
Source: Preliminary study on specific energy consumption of cold storage room in Thailand’s cold chain. These ranges apply to the surveyed rooms and are not a national census.
The same study reported a chilled-store regression of 1,630.3 times store volume raised to -0.3812 for kWh per cubic meter-year, with R² of 0.60. Its frozen-store regression was 1,560.0 times store volume raised to -0.2917, with R² of 0.62.
Those regressions are study-specific relationships, not universal benchmarks. A separate peer-reviewed benchmark published in 2013 found that store volume explained 93% of energy variation for chilled stores, 56% for frozen stores and 67% for mixed stores in its international sample; these are benchmark results, not causal estimates.
Refrigerant, Efficiency and Emissions Trends
A 2018 model of a refrigerated automated warehouse allocated 79.2% of electricity demand to refrigeration equipment, 10.1% to auxiliary equipment, 8% to movement equipment and 2.8% to lighting. The modeled grid-power profile ranged from 69.9 to 95.9 kW without photovoltaic generation.
In that model, photovoltaics reduced peak summer grid demand by up to 66.9% and winter grid withdrawal by up to 30.7%. Annual modeled grid-electricity reduction ranged from 8.8% in January to 20.4% in July, with an average reduction of 16.4%.
Source: Fostering Renewables into the Cold Chain: How Photovoltaics Affect Design and Performance of Refrigerated Automated Warehouses. These are modeled case-study results, not measured industry averages.
Related refrigeration evidence comes from EPA GreenChill partner food-retail stores rather than warehouse-only facilities. Average refrigerant emissions fell from 411 pounds per store in 2007 to 298 pounds in 2023, while installed refrigerant was 921 pounds lower on average in 2023 than in 2007.
The EPA estimated that GreenChill partners avoided $134 million in replacement-refrigerant costs in 2023 and $899 million over 2013–2023. These figures apply to the partner program, not specifically to refrigerated warehouses.
Source: GreenChill Partnership Accomplishments.
In the United Kingdom, 425 cold-store warehouses registered under the Cold Chain Federation climate-change agreement used 3.5 TWh of primary energy in 2018. The corresponding electricity total was estimated at 1.35 TWh of final energy, and the 2017–2018 analysis counted 238 organizations, some operating more than one site.
Source: Cold Chain Energy and Emissions analysis. The registered-facility boundary may overlap with other sector categories.
A peer-reviewed refrigeration review estimates that refrigerated warehouses represent roughly 20% of food-industry electricity consumption and that refrigeration accounts for approximately 60%–70% of electricity use in a typical refrigerated warehouse. The same review estimates that a frozen cold warehouse consumes nearly 30% more electricity per capacity unit than a chilled cold warehouse.
Source: Annual Review of Environment and Resources refrigeration review. These are review-level estimates whose boundaries and denominators may vary.