Freezing operations require a large portion of electricity used by industries. Drying procedures usually depend on fossil fuels. Older dehydration systems were designed to operate with maximum throughput, disregarding energy efficiency. This energy was transformed into another energy source. For example, boiler fuel can be used to produce steam, which can have end uses.
Onsite transportation consumes the most distillate fuel oil in the non-process category.
Since the food and kindred products industry is diverse, there are many different types of operations dependent on energy. The food industry generates a significant amount of waste per year. Waste and energy use can be decreased through process optimization, operating techniques, and scheduling. Wastewater can be processed and reused. Waste can be converted to byproducts and reused or sold.