Gensets
A container genset is a generator set that supplies electrical power to a reefer container when a fixed power connection is unavailable. It keeps the refrigeration unit running during road transport, temporary storage and other stages of the logistics process.
Harbour Reefer Service provides inspection, maintenance, repair, refurbishment and technical support for container gensets. From our service locations in Rotterdam and Antwerp, we help shipping lines, leasing companies, depots and transport operators keep their gensets reliable and operational.
What is a container genset?
A container genset, or generator set, is a mobile power source used for refrigerated shipping containers. A reefer container requires a continuous electrical supply to operate its compressor, fans, controller and temperature-management system.
At terminals and on board vessels, reefers are normally connected to a fixed electrical power supply. During road transport or at locations without a suitable connection, a genset can provide the electricity needed to maintain the required cargo temperature.
This makes gensets an essential part of temperature-controlled transport for products such as food, pharmaceuticals and other temperature-sensitive cargo.
How does a reefer container genset work?
Most transport gensets use a diesel engine to drive an alternator. The alternator generates electrical power, which is supplied to the refrigeration unit through the reefer container’s power connection.
The genset operates independently while the container is in transit. Its fuel supply, electrical output and operating condition must be monitored carefully because an interruption can cause temperature deviations and place the cargo at risk.
Clip-on and underslung gensets
Two types of gensets are commonly used for reefer container transport: clip-on gensets and underslung gensets.
| Genset type | Mounting position | Typical application | Main advantage |
|---|---|---|---|
| Clip-on genset | Attached to the front of the reefer container | Flexible use with individual containers | Can travel with the container and be removed when no longer required |
| Underslung genset | Mounted underneath the trailer chassis | Regular road transport of reefer containers | Remains attached to the chassis when containers are exchanged |
The most suitable option depends on the transport operation, trailer configuration, required flexibility and equipment availability.
Container genset maintenance and repair
Regular genset maintenance helps prevent power failures, unplanned downtime and temperature-related cargo risks. Harbour Reefer Service provides preventive maintenance, fault diagnostics and repair for gensets from major manufacturers.
Depending on the genset and the reported fault, service work can include:
- Engine and alternator inspection
- Electrical output and connection testing
- Fuel-system and cooling-system checks
- Battery, starter and charging-system inspection
- Controller, sensor and alarm diagnostics
- Repair or replacement of defective components
- Operational and load testing after repair
Where appropriate, gensets can also be refurbished or modified to extend their useful operational life. Read more about our maintenance and repair services.
Genset spare parts and refurbishment
Fast access to parts is important when a genset failure interrupts reefer transport. Harbour Reefer Service can supply individual components and complete spare-parts kits, depending on equipment type and availability.
Original, reconditioned or used parts may be selected based on the technical requirements, condition and economic value of the genset. Our technicians can advise on whether repair, refurbishment or component replacement is the most practical solution.
24/7 genset support
A genset malfunction can occur at any stage of a transport operation. Harbour Reefer Service provides 24/7 technical support for urgent faults and breakdowns.
Our technicians first assess the problem remotely to identify the likely cause and determine whether it can be resolved with technical guidance. If on-site intervention is required, the appropriate service options can be discussed based on the location and nature of the fault.
Genset service in Rotterdam and Antwerp
Genset services are provided from the HRS depot on Theemsweg in Rotterdam, at service locations in Rotterdam and Antwerp and, where arranged, at nearby depots and terminals.
These locations allow us to support customers with planned maintenance, urgent repairs, refurbishment and technical genset projects within two major European port regions.
Genset modifications and special projects
Some transport operations require modifications or a project-specific genset configuration. Harbour Reefer Service supports special projects involving re-engineering, technical adaptations and the installation of auxiliary equipment.
Our technicians can assess the existing equipment and advise on a practical solution based on the intended application.
Need service for a container genset?
Do you need maintenance, repair, refurbishment or urgent support for a container genset? Contact Harbour Reefer Service to discuss the equipment, location and required service.
Frequently asked questions about container gensets
What is a genset in shipping?
A genset is a generator set that supplies electrical power to equipment. In reefer shipping, it powers the refrigeration unit when the container cannot be connected to a fixed electrical supply.
Why does a reefer container need a genset?
A reefer needs continuous power to maintain its temperature. A genset provides that power during road transport, temporary storage or other situations where a fixed connection is unavailable.
What is the difference between a clip-on and underslung genset?
A clip-on genset is attached directly to the front of a reefer container. An underslung genset is mounted underneath the trailer chassis and remains with the trailer when containers are exchanged.
Can Harbour Reefer Service repair container gensets?
Yes. Harbour Reefer Service provides diagnostics, maintenance, repair, refurbishment, parts and technical support for container gensets from major manufacturers.
Do you provide emergency genset support?
Harbour Reefer Service provides 24/7 technical support for urgent genset faults. The available response depends on the equipment, problem and location.