Reefer container power disconnections at ports destroy perishable cargo worth six figures per incident, and shippers cannot monitor or prevent it

Refrigerated containers (reefers) carrying perishable goods — fresh produce, seafood, pharmaceuticals, frozen meat — must maintain continuous power to keep their cooling systems running. When a reefer container is discharged from a vessel and placed in the port terminal yard, it must be plugged into the terminal's electrical grid. If the terminal runs out of reefer plugs, or if the power connection is delayed, interrupted, or accidentally disconnected during container movements within the yard, the temperature inside the container begins rising immediately. In tropical ports, an unpowered reefer container can exceed safe temperature thresholds within 2 to 4 hours. A single reefer container of premium seafood or pharmaceutical products can be worth $100,000 to $500,000. When the cold chain breaks, the entire load may be condemned. These disputes quickly escalate into six-figure insurance claims, and the liability chain is tangled: the carrier blames the terminal, the terminal blames the yard tractor operator, and the shipper is left fighting multiple parties while their goods rot. For perishable food exporters in developing countries — Chilean fruit growers, Ecuadorian shrimp farms, Kenyan flower exporters — a single spoilage event can represent months of revenue. The structural problem is that shippers have no real-time visibility into whether their reefer container is actually plugged in and holding temperature at the port terminal. Most terminals do not share reefer monitoring data with cargo owners. IoT sensors exist that can report temperature and power status in real time, but adoption is fragmented — most reefer units still rely on the container's built-in data logger, which can only be read after the container is opened at the destination. By then the damage is done. Terminal operators resist sharing real-time reefer data because it creates a clear liability trail when they fail to maintain power connections.