The primary demand response opportunity at refrigerated warehouses is shifting the timing of refrigeration load. Often, this is achieved through pre-cooling before an event and then reducing refrigeration load during an event. For example, freezer spaces can typically lower air temperatures by 10⁰F in 10 hours prior to an event and then curtail load for 6-8 hours as temperatures rise back to the intended setpoint.
Freezers generally have the best potential for demand response because product temperatures lower than the setpoint (often around 0⁰F) are typically acceptable. Refrigerated beverages also have good potential, because of a relatively large range of acceptable product temperatures. Perishables in coolers (>32⁰F) such as fruits, dairy, and meat are typically not good candidates for demand response because these products have a very narrow range of acceptable storage temperatures.
Additional end-uses besides refrigeration may also have demand response opportunity. These include battery charging for forklifts and pallet drives, HVAC and lighting in office spaces, and process loads.