Industry Insight: Cold storage is becoming one of the clearest tests of operational resilience in the food and beverage supply chain. The facilities that perform best will not simply be the largest or newest; they will be the ones with accurate data, flexible energy strategies, trained engineering teams and a realistic plan for refrigerant transition. For manufacturers, the priority is to stop viewing refrigeration as a fixed overhead and start treating it as a controllable production asset. That means auditing legacy systems, understanding the real cost of every degree of cooling, using automation where it delivers clear throughput gains, and making sure future specifications reflect both compliance risk and energy volatility. The next phase of cold storage will be defined by how well operators combine engineering discipline with commercial agility.
Cold storage is moving from a support function to a strategic pressure point for food and beverage operators, as energy costs, refrigerant reform, labour constraints and food security risks force a rethink of how temperature-controlled infrastructure is designed, powered and managed.
Cold storage has always carried high operational responsibility. It protects product safety, maintains quality, supports just-in-time distribution and gives manufacturers the capacity to balance seasonal supply with year-round demand. What has changed is the level of pressure now sitting on that infrastructure.
For food and beverage manufacturers, cold stores are no longer simply insulated boxes with refrigeration plant attached. They are energy-intensive assets operating in a market shaped by volatile power prices, tighter refrigerant rules, skills shortages, ageing UK infrastructure and rising expectations around carbon reduction.
The result is a more demanding investment conversation. Operators are not only asking whether cold storage can maintain temperature. They are asking whether it can reduce peak demand, work with low-GWP refrigerants, support automation, withstand extreme weather, protect data, and deliver measurable savings without increasing product risk.
Recent concerns around the resilience of the UK cold chain have sharpened that debate. The Cold Chain Federation has warned that temperature-controlled storage and logistics should be treated as critical to food security, particularly as disruption from energy pressures, cyber risk, extreme weather and international instability becomes harder to dismiss.
Energy pressure changes the investment case
Energy has always been one of the largest costs in cold storage, but the scale and persistence of UK electricity prices has changed the urgency of improvement. Official analysis shows average non-domestic electricity prices fell from their 2023 peak, but remained around 75 per cent higher in late 2024 than at the start of 2021.
For frozen and chilled operators, that makes basic efficiency measures more valuable, but it also exposes the limits of piecemeal upgrades. LED lighting, better doors, improved insulation and more efficient compressors still matter. However, the bigger opportunity is now in control: matching refrigeration demand to production schedules, door activity, weather, product load and energy price signals.
This is why cold storage is increasingly being discussed as an energy flexibility asset. Large stores have thermal mass, which means they can sometimes be cooled more aggressively when energy is cheaper or when on-site generation is available, then reduce compressor activity during expensive grid periods without compromising product safety. With the right controls, sensors and operating rules, cold stores can shift from passive power consumers to active participants in demand management.
For food manufacturers with existing facilities, the key question is not whether this is technically possible. It is whether enough reliable data exists to model the risk. Poorly calibrated sensors, manual logs, inconsistent door discipline and limited product-temperature visibility all restrict the ability to optimise safely. Energy flexibility only works when the operator can prove that product temperature, not just air temperature, remains within defined limits.
Refrigerants move from specification issue to business risk
Refrigerant choice has become one of the most important strategic decisions in cold storage. The move away from high-GWP HFCs has been underway for years, but the next phase is more commercially sensitive because it affects existing assets, servicing options and capital planning.
Defra consulted on reforms to the GB HFC phasedown schedule, including proposals that would go beyond the existing reduction path and move towards a much deeper long-term cut in HFC availability. In May 2026, government confirmed it would not legislate in 2026 to change the phasedown steps due from 1 January 2027, giving industry short-term clarity while leaving the existing phase-down trajectory in place.
That delay should not be read as a reason to wait. ACRIB has warned that 46 per cent of UK cold stores are still operating on HFCs and that retrofit options for some existing equipment are limited or unavailable. The board also highlighted concerns around the training and competence needed as operators move towards A2L, A3 and COâ‚‚ systems.
For manufacturers, the commercial risk sits in three areas. The first is service availability: ageing HFC-based systems may become more expensive and difficult to maintain. The second is asset value: equipment that cannot be practically adapted may face earlier replacement than expected. The third is skills: low-GWP refrigerants bring different handling, safety and design requirements, which means engineering teams and contractors must be assessed before a transition plan is agreed.
Natural refrigerants such as ammonia and COâ‚‚ will continue to play a major role, particularly in larger industrial installations, but they are not simple like-for-like replacements. Ammonia brings strong efficiency benefits but requires robust safety management. COâ‚‚ can be highly effective but demands the right system design, especially in warmer ambient conditions. A2L refrigerants may support some lower-GWP applications, but they introduce flammability considerations that cannot be ignored.
The practical message is clear: new cold storage investments should be assessed against long-term refrigerant availability, not only current equipment cost. For existing facilities, operators need a refrigerant audit that looks at plant age, charge size, leakage history, service support, available alternatives and likely replacement windows.
The move to -15°C becomes an engineering conversation
The campaign to raise frozen food storage and transport temperatures from -18°C to -15°C has moved from an interesting sustainability idea to a serious operational discussion. The Move to -15°C coalition argues that a three-degree shift could reduce emissions, lower costs and reflect the reality that modern freezing technology has advanced significantly since the long-standing -18°C convention was established.
The potential gains are significant. Research behind the initiative has been presented as capable of saving 17.7 million metric tonnes of carbon dioxide annually, creating energy savings of around 25 terawatt-hours and cutting supply chain costs by at least five per cent, with some areas seeing savings of up to 12 per cent.
Retail trials have also helped move the debate forward. Morrisons has tested raising freezer temperatures from -18°C to -15°C in selected stores, with the trial backed by the Move to Minus 15°C Coalition and supported by research suggesting energy savings without noticeable impact on food safety, texture, taste or nutritional value.
For manufacturers, however, the opportunity must be treated carefully. Moving to -15°C is not simply a case of turning a dial and hoping the product behaves the same. Frozen supply chains are exposed to door openings, loading cycles, warm pallets, defrost events, vehicle interfaces and variable dwell times. A smaller temperature buffer can increase the importance of air management, packaging performance, product core temperature and real-time monitoring.
The strongest applications are likely to be controlled, data-rich environments where operators can use dynamic set points rather than fixed assumptions. A facility may operate closer to -15°C during stable periods, then temporarily reduce air temperature during loading, dispatch, door activity or other high-risk events. This kind of micro-zoning protects product quality while still allowing energy savings where conditions permit.
Packaging teams also have a role to play. If frozen products spend more time closer to -15°C, packaging must continue to protect against moisture migration, surface frost, texture change, seal failure and handling damage. The temperature debate is therefore not only a refrigeration issue; it is a combined engineering, packaging, QA and logistics question.
Automation must work in brownfield reality
Cold storage has long been suited to automation because labour is difficult, expensive and physically demanding in chilled and frozen environments. Automated storage and retrieval systems, conveyors, robotic pallet handling, automated guided vehicles and digital warehouse management systems can reduce manual exposure, improve accuracy and increase throughput.
The difficulty is that many UK facilities were not designed around modern automation. They may have low ceiling heights, constrained yards, legacy racking, mixed product profiles, limited power capacity or refrigeration plant that leaves little room for major structural change. That makes a full automated rebuild unrealistic for many operators.
CBRE has noted that automation can require significant scale to become economically viable, with automated sites often needing around 50,000 pallets or more because build costs can be substantially higher than standard industrial development.
That does not mean automation is only for the largest players. It means the next stage is likely to be modular and targeted. Instead of replacing an entire cold store, manufacturers can automate the most constrained or labour-intensive points first: pallet movements from blast freezing to storage, case picking in high-volume SKUs, automated doors, robotic depalletising, shuttle systems in dense storage zones, or digital slotting to reduce travel time.
The return on investment should be measured in more than headcount. Automation can reduce door-open time, improve traceability, lower product damage, increase stock accuracy, improve safety and make better use of expensive chilled or frozen space. In a cold environment, every unnecessary movement has an energy consequence as well as a labour cost.
Data becomes the foundation of resilience
AI and digital tools are becoming more practical in cold storage, but the real value depends on data quality. The strongest systems are not simply dashboards that show temperatures. They connect temperature, energy, stock, door activity, maintenance, weather, product flow and labour planning to support better decisions.
Recent cold chain case studies show AI being used beyond isolated pilots. United States Cold Storage, for example, has been cited in relation to AI-driven appointment scheduling across more than 40 warehouses, with reported improvements in dwell time and detention costs.
For UK food and beverage operators, similar thinking can be applied across cold storage estates. Predictive maintenance can identify compressors, fans, valves or sensors that are drifting away from normal behaviour. AI-based scheduling can reduce yard congestion and prevent temperature risk during loading peaks. Digital twins can test how plant, building fabric and product temperature respond under different conditions before changes are made in the real facility.
The next step is integration. Too many cold stores still operate with separate systems for refrigeration, warehouse management, energy monitoring, transport scheduling and maintenance. When these systems do not talk to each other, operators lose the ability to optimise the whole site.
Cyber security must also be part of the conversation. As cold stores become more connected, they become more dependent on digital control systems. A cyber incident that disrupts access, disables monitoring or interferes with control logic could quickly become a product safety and continuity issue. For critical temperature-controlled operations, resilience planning should include backup monitoring, manual override procedures, tested recovery plans and clear responsibility between IT, engineering and operations.
Building the next cold storage strategy
The cold storage sector is not short of technology. The challenge is prioritising investment in a way that matches commercial pressure, compliance risk and operational reality.
For food and beverage manufacturers, the starting point should be a full asset review. That includes the age and condition of refrigeration plant, refrigerant type, energy profile, insulation performance, controls capability, door discipline, maintenance history, automation potential, data reliability and exposure to extreme weather or power disruption.
From there, operators can build a staged plan. Immediate actions may include sensor calibration, energy monitoring, leak reduction, door management, maintenance discipline and staff training. Medium-term investments may include control upgrades, heat recovery, variable-speed drives, improved evaporator management, modular automation and better integration between refrigeration and warehouse systems. Longer-term decisions may involve refrigerant replacement, estate consolidation, new-build cold storage or participation in demand response and local energy schemes.
Cold storage is becoming more expensive to ignore and more valuable to optimise. The facilities that succeed will be those that treat temperature control as part of business strategy rather than background infrastructure. In a market where every kilowatt, every pallet space and every degree matters, cold storage is now a board-level issue.
Why is cold storage becoming more important for food and beverage manufacturers?
Cold storage is becoming more important because it directly affects product safety, energy cost, supply chain resilience, compliance and customer service. As manufacturers face tighter margins and more disruption, temperature-controlled infrastructure has become a strategic operational asset.
What does the HFC phasedown mean for cold storage operators?
The HFC phasedown reduces the availability of higher-GWP refrigerants over time. Operators using older HFC-based systems may face higher servicing costs, limited retrofit options and earlier replacement decisions, making refrigerant audits increasingly important.
Could frozen food really be stored at -15°C instead of -18°C?
Research and trials suggest there may be significant energy and carbon savings from moving some frozen supply chains from -18°C to -15°C. However, the change must be carefully managed with strong monitoring, product validation and engineering controls to protect safety and quality.
How can cold stores reduce energy costs?
Cold stores can reduce energy costs through better controls, improved insulation, efficient compressors, door management, heat recovery, variable-speed drives, predictive maintenance and energy flexibility strategies that shift cooling demand away from peak price periods.
Is automation only suitable for large cold stores?
Full-scale automation is often easier to justify in large facilities, but smaller and existing cold stores can still benefit from targeted automation. Modular systems for pallet movement, picking, stock control and door management can improve throughput and reduce labour pressure without requiring a complete rebuild.
