Holdover plates are stainless steel units that contain an evaporator coil surrounded by a liquid solution.  The solution freezes as the compressor runs.  The frozen solution will  continue to absorb heat even after the compressor shuts off.  Holdover plates can significantly reduce energy consumption.

Dole’s Eutectic Holdover Plates are the answer for mobile refrigeration and are the alternative to mechanical refrigeration systems. Dole’s holdover plates are designed to maintain a constant temperature, or holdover, throughout the course of a day. The plates are then “recharged” by connecting them to a condensing unit. After charging, the holdover plates are ready to maintain refrigerating temperatures for an entire work cycle.