Decentralized refrigeration systems with CO2: Panasonic iCO2RE for high-efficiency commercial cooling

Decentralized refrigeration systems with CO2: Panasonic iCO2RE for high-efficiency commercial cooling

by Panasonic 20-02-2026 Uncategorized

Introduction

A decentralized system is a commercial refrigeration application concept consisting of several refrigeration units, such as iCO2RE - transcritical CO2 refrigeration unit - connected to different cooling and freezing devices. These can be chambers or cabinets of different sizes and capacities. An additional part of the decentralized system can be a heat recovery system compatible with total range CO2 refrigeration units. Innovative concepts of a decentralized systems are dedicated to commercial refrigeration applications, especially supermarkets of large areas. 
The example concept of a complex decentralized solution for a supermarket application is shown and explained in the movie:



With a simple user interface, low energy consumption, fast commissioning, and easy maintenance, iCO2RE by Panasonic is the perfect solution for convenience stores, restaurant cold rooms, fuel stations, and food stores.

Main benefits of the decentralized refrigeration systems

In today’s commercial applications, replacing the powerpack with decentralized cooling systems results in energy savings, more precise temperature regulation resulted in better product quality, and increased operational safety. The redundancy of the refrigeration units provides the operational safety of the installation. With a decentralized system, that retrofit may be performed step-by-step during the market operation without stopping the business.

Thanks to the heat recovery option*, energy costs can be reduced by reclaiming the heat from a high-pressure cooling system for domestic hot water and central heating, for example.

* For selected iCO2RE OCU-CR units


The main benefits of decentralized applications are collected below:

Less cost in operation:

  • Higher efficiency thanks to optimized parametrization of the evaporators.
  • Smaller refrigerant charge per circuit.

Faster and easier:

  • Compact, lightweight Plug&Play unit.
  • Smaller diameters and shorter pipelines.

Customized to your needs:

  • Easy sales surface extension.
  • Modular solution allowing step by step store remodelling.

Higher reliability:

  • 100% tested with refrigerant in factory.
  • Split of cooling systems. No risk of total shut down like in centralized solution 
The infographic shows an example of a large retail store after replacing the old power-pack system with a more reliable decentralized solution. 



1 - OCU-CR1000VF8
2 - OCU-CR200VF5A
3 - Reach-in freezer (field supplied).
4 - Serve-over counters, showcase and walk-in refrigerator (field supplied).
(*) - Up to 100 m piping connection.
(** ) - Multiple evaporators connections possible.
Blue line – MT operation
Green line – LT operation


Heat recovery - Smart energy that pays off

Heat recovery systems capture and reuse the thermal energy generated during cooling processes - energy that would otherwise be wasted. By redirecting this heat to support domestic hot water, space heating, or industrial processes, these systems significantly reduce energy costs and carbon emissions. It’s an efficient, sustainable solution that lets you cool and heat at the same time. Investing in heat recovery means investing in smarter, greener energy use.





The system delivers high efficiency not only under transcritical conditions, but also throughout the year — even at low ambient temperatures.
The chart above presents the heat reclaim performance of a 15 kW unit (model OCU-CRC150A08), showing the correlation between heat reclaim capacity and ambient temperature for a given evaporation temperature.


iCO2RE transcritical units as the main part of a decentralized system

The iCO2RE CO2 unit is a sustainable solution designed for natural R744 refrigerant with low environmental impact. Thanks to inverter technology and an advanced control system, it provides significant energy savings, which is a crucial feature in a time of rapid growth in the cost of energy. With an integrated, oversized gas cooler, our units may operate in ambient temperatures up to 45°C*,  with smooth starts and without alarms. 

The iCO2RE CO2 units are equipped with an active oil management system, safety automation, and modbus-ready feature as standard. These condensing units are also distinguished by their low-noise operation. For cooling applications, they can operate in a capacity range from 2 to 29 kW, and in case of freezing applications, in a range from 1 to 17,4 kW. 

*For selected iCO2RE OCU-CR units.


Decentralized refrigeration systems summary

The iCO2RE CO2 transcritical unit is the perfect solution for your supermarket and semi industrial installation. The cost of the investment is optimized, including a faster and easier installation,  where refrigerant charge and pipeline diameters are reduced.

You will also strongly decrease your operation cost and increase your operation safety, with less risk on food waste. The redundancy of cooling units provided more precise regulation, which increases the quality of the final product. This modular solution also enables easy sales surface extension and step-by-step remodeling.