Central Storage & Warehouse has completed another expansion of its −70°F ultra-cold storage operation in Pleasant Prairie, Wisconsin, extending a specialised temperature-controlled facility that the company has now enlarged twice since its original development a decade ago.
The new space formally opened on June 2, 2026, according to Central Storage & Warehouse, or CSW. It is designed to store temperature-sensitive ingredients used in food manufacturing, although the company has not disclosed the size of the expansion, the number of pallet positions added or the investment required to build it.
Those omissions limit any assessment of how much additional cold-storage capacity the project brings to the market. Its significance instead lies in CSW’s continued investment in a storage temperature substantially below the conventional frozen environments elsewhere at the Pleasant Prairie campus.
CSW first established its −70°F capability in 2016, expanded it in 2020 and has now completed a second expansion in 2026. The three-stage development represents a decade-long build-out of ultra-cold infrastructure at the site, although the company has not published comparable capacity figures for any of the phases.
Consolidated Construction Company and Summit Refrigeration worked with CSW on the design and construction of the latest expansion. CSW said creating a −70°F environment requires purpose-built refrigeration and specialised infrastructure, but it did not identify the refrigeration equipment, refrigerant, insulation specification or redundancy arrangements used in the project.
The operating temperature is notable because CSW’s broader Pleasant Prairie warehouse accommodates conventional frozen and refrigerated products across a range of −20°F to 40°F, in addition to its −70°F capability. Maintaining the lower temperature creates different engineering and operating requirements from standard frozen-food warehousing, particularly around refrigeration, insulation, temperature monitoring and movement between storage and loading areas.
CSW has not disclosed performance information for the new space, including temperature tolerances, monitoring arrangements, recovery following door openings or independent temperature-validation results. Backup power and refrigeration redundancy were also not specified.
The company has provided similarly limited information about what will occupy the expansion. CSW said the capacity is intended for temperature-sensitive ingredients used in food manufacturing but did not identify customers or product categories. While its wider facility information refers to −70°F “bio-science storage,” there is no disclosure establishing that the new expansion will handle pharmaceuticals, vaccines or clinical materials.
The project adds specialised capacity within a substantially larger multi-temperature warehouse. CSW says the overall Pleasant Prairie facility contains more than 29,000 pallet positions, but it has not specified how many are allocated to ultra-cold storage or how many positions the latest project adds.
According to the company, the wider site is BRCGS Storage and Distribution certified with an AA rating and is registered with the USDA and FDA. Those credentials apply to the Pleasant Prairie facility overall and were not announced as new certifications associated specifically with the 2026 expansion.
Pleasant Prairie has been part of CSW’s network since 1993 and sits in southeast Wisconsin between the Milwaukee and Chicago markets. That location gives the company access to food manufacturing and distribution activity across southeast Wisconsin and northern Illinois, although CSW has not disclosed the delivery radius or individual production facilities served by its ultra-cold operation.
The company said the latest investment responds to continued growth in its ultra-cold business and is intended to provide existing customers with additional capacity. No utilisation figures, contracted occupancy or customer commitments were released, however, so the level of demand behind the expansion cannot be independently assessed.
For CSW, the opening marks another stage in the development of a temperature band it has maintained at Pleasant Prairie since 2016. The scale and economic significance of the latest expansion remain unclear, however, without disclosure of its storage volume, pallet capacity, capital cost, energy requirements and committed customer base.