Modaco
Back to blog

Display Fridges with Power Outage Autonomy – Backup Solutions for Retail Stores and HoReCa

Author: Echipa Modaco

Why Is Display Fridge Autonomy During a Power Outage Essential?

Any food store owner, supermarket operator, or HoReCa business knows that an unexpected power outage can turn just a few hours of downtime into a significant financial loss. Dairy products, meat, fish, and ready-to-eat items can all be compromised quickly if the temperature inside a display fridge exceeds food safety limits. Power outages are not uncommon in Romania, particularly in rural areas or during periods of peak energy demand. For this reason, planning a backup system for refrigeration equipment is not a luxury — it is a necessity.

How Long Can a Display Fridge Hold Temperature Without Power?

The natural autonomy of a display fridge — meaning the time it maintains an adequate temperature without an electrical supply — varies depending on several factors:

  • The type and quality of thermal insulation of the unit
  • The ambient temperature in the room
  • The quantity and type of products stored inside
  • How frequently the doors were opened before the outage occurred

Under normal conditions, a well-insulated display fridge can maintain a safe temperature (below +8°C) for 2 to 4 hours without any external intervention. Upright display fridges with integrated doors hold temperature better than open-front units, which lose cold air much more rapidly.

Backup Solutions for Display Fridges – What Are Your Options?

1. Electric Generator – The Classic and Effective Solution

Electric generators remain the most widely used backup solution for commercial and HoReCa operations. A diesel or petrol generator, correctly sized against the total power consumption of all refrigeration equipment, can take over the full electrical load within seconds. It is important to calculate the total power draw of all display fridges and refrigeration units before purchasing a generator. We recommend consulting a specialist for correct sizing.

2. Industrial UPS Systems – For Short Interruptions

Industrial-grade UPS (Uninterruptible Power Supply) systems are well suited for short power interruptions of up to 30–60 minutes. While they cannot sustain display fridges over the long term, UPS units are excellent for buying time until a generator starts or mains power is restored. They also protect the electronic components of display fridges from voltage fluctuations, which can damage compressors and control systems.

3. Photovoltaic Systems with Battery Storage

An increasingly modern and accessible solution is photovoltaic installations equipped with storage batteries. These can power display fridges throughout the day and store energy for use during outages. Although the initial investment is higher, it delivers significant long-term savings on electricity bills — an important advantage for any food retail or HoReCa business.

4. Thermal Mass and Cold Accumulators

A complementary solution that is often overlooked is the use of cold accumulators (eutectic plates or cooling gel containers). These are placed inside the display fridge during normal operation and accumulate negative thermal energy, helping to maintain temperature for longer in the event of a power outage. They do not replace an electrical backup, but they do extend the natural autonomy of the equipment.

Practical Tips for Reducing Risk During a Power Outage

  • Do not open the display fridge doors during a power outage — every opening accelerates the rise in temperature.
  • Monitor temperature with digital sensors with alarm functions — you will know exactly when it is time to act.
  • Group the most sensitive products in display fridges with greater autonomy or in enclosed refrigerated spaces.
  • Test your generator or UPS system periodically — not only when you actually need it.
  • Choose quality display fridges with high-performance insulation — these naturally hold temperature for longer without a power supply.

How Can Modaco Help You Stay Prepared?

At Modaco, we have been manufacturing display fridges and importing commercial refrigeration equipment since 1992, with particular attention to energy efficiency and thermal insulation quality. Our display fridges are designed to maintain the optimum temperature for as long as possible and to be compatible with the backup solutions available on the market. Whether you run a food store, a bakery, a pastry shop, or a HoReCa establishment, our team can advise you on choosing the right equipment and the best configuration to keep your products safe in any situation.

Don't let a power outage affect your business and reputation. Contact the Modaco team on 0727.324.787 and speak with our specialists about the best refrigeration solutions for your needs. We are here for you with expertise, quality equipment, and dedicated technical support.