GlossaryEN1 min readUpdated: Jun 17, 2026

Reefer Asset Backup Systems

A backup system for refrigerated containers (reefers) is standby power or redundancy equipment that keeps the cold chain intact when primary electrical supply fails or the cooling unit malfunctions.

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Last updated: 17 June 2026Published: 19 June 2025

Source: https://www.fleetmon.com/learn/reefer-monitoring-and-backup-power-for-cargo/

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Logistics concept

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Definition & Explanation

A backup system for refrigerated containers (reefers) is standby power or redundancy equipment that keeps the cold chain intact when primary electrical supply fails or the cooling unit malfunctions. Diesel generators, uninterruptible power supplies (UPS), and shore power connections at terminals or on board vessels are the most common solutions. Perishable cargo such as fresh produce, fish, or pharmaceuticals is sensitive to even brief temperature excursions; a failure without backup can result in total cargo loss and significant liability claims. On long ocean voyages or during port delays, these redundancy systems are indispensable for both shipowners and shippers. Not to be confused with standard reefer plug connections, which are routine power supply, not emergency backup.