Andre Klynsmith

Warehousing and Storage

Plugs, Not Pallets: The Citrus Peak Is Won or Lost on Power and Dwell

The Citrus Growers' Association has trimmed its 2026 export estimate to 205.3 million 15kg cartons, down from an earlier 209.4 million but still a record season. Those cartons move in refrigerated containers, and a refrigerated container is only cold for as long as something is feeding it electricity.

Warehousing and Storage

24 August 2026 • 5 min read

Cold storage capacity is quoted in pallet positions. During the citrus peak it is consumed in plug points and hours. A facility can be well within its pallet capacity and still be the reason a consignment misses a sailing, because the constraint that binds is power and dwell, not floor area.

A season measured in containers, not cartons

South African growers exported roughly 203 million cartons in 2025, and moving them required more than 120,000 refrigerated containers. Scale the 2026 estimate against that ratio and the equipment requirement rises with it. Every one of those boxes needs a plug at the packhouse, potentially another at a cold store or depot, and one more in the terminal stack until it is loaded.

This is why the industry has spent the season talking about reefer plug utilisation rather than warehouse vacancy. Landside congestion and inconsistent truck turnaround times extend the period each box occupies a plug, which means fewer plugs are released for the next arrival even though no additional fruit has been packed.

Where the cold chain strains

The strain points sit at the handoffs. Fruit leaves the packhouse at temperature, is pre-cooled, is plugged in while it waits for a truck, is unplugged for the road leg, and is plugged in again on arrival. Each unplugged interval is a small withdrawal from the product's remaining shelf life, and none of them appear on a storage invoice.

Transnet Port Terminals has approached this season by working with the industry and the shipping lines on refrigerated container demand forecasting, stack management, berthing, stowage and storage. That is the right list, but it is a coordination exercise, and coordination degrades quickly when arrival patterns become irregular -- which is exactly what happens when the road leg is unpredictable.

The independent plug as a hedge

One structural answer that has emerged is the portside depot with its own plug capacity -- facilities offering full container handling alongside a few hundred plug-in points, so that loading and staging can continue when terminal operations slow or stop. That is a warehousing answer to a port problem, and it is worth understanding as an availability purchase rather than a storage purchase.

For a transporter, the practical consequence is that "the cold store has space" is not a sufficient answer before committing a vehicle. Space without a released plug means the box waits on the trailer, and a trailer standing under a plugged reefer is a vehicle earning nothing while burning fuel or waiting for a genset.

About the Author
	Andre Klynsmith Entrepreneur & Technology Enthusiast Andre's expertise spans technology, blockchain, transport, and logistics -- with a passion for innovation and driving positive change across industries. info@laaimylorrie.com | laaimylorrie.com