A Practical Guide for Energy Managers and Plant Managers
Energy costs represent one of the largest controllable operating expenses in food manufacturing facilities. Between refrigeration systems, process cooling, ventilation, compressed air, and HVAC infrastructure, food processing plants require continuous energy-intensive operations to maintain product quality and safety.
For energy managers in food manufacturing, reducing energy consumption is particularly challenging. Temperature control requirements, sanitation protocols, and production schedules limit operational flexibility. However, many facilities still contain significant opportunities for food manufacturing energy savings that can be implemented without disrupting production.
According to the U.S. Department of Energy, food manufacturing is among the most energy-intensive industrial sectors due to refrigeration, thermal processing, and ventilation requirements.
Understanding where energy is typically overspent is the first step toward building a structured energy optimization strategy.
Identify Food Manufacturing Energy Savings Opportunities
Many food manufacturing facilities uncover significant cost reduction opportunities through engineering-led optimization.
01. Refrigeration Systems: The Largest Energy Expense
Refrigeration systems typically account for the largest energy consumption in food manufacturing facilities. These systems often operate continuously to maintain product integrity, making even small inefficiencies costly.
Over time, refrigeration systems become less efficient due to equipment aging, operational changes, and control drift. Many facilities operate refrigeration systems conservatively to avoid risk, but this often leads to unnecessary energy consumption.
Optimizing compressor sequencing, improving suction pressure control, and refining defrost cycles can significantly reduce energy usage while maintaining temperature stability.
The U.S. Department of Energy notes that optimizing industrial refrigeration systems can significantly reduce operational costs in food processing facilities.
02. Upgrading from HFC to CO2 Refrigeration Systems
Many food manufacturing facilities continue to operate legacy HFC refrigeration systems. These systems often consume more energy and are increasingly impacted by regulatory changes.
Upgrading to CO₂ refrigeration systems provides both energy savings and regulatory compliance benefits.
CO₂ refrigeration systems offer:
- Improved energy efficiency in many applications
- Reduced refrigerant costs over time
- Lower environmental impact
- Future-proof compliance with refrigerant regulations
The transition away from HFC refrigerants is being driven by the AIM Act, which mandates phased reductions in high-global-warming-potential refrigerants.
The AIM Act requires significant reductions in HFC refrigerant production and consumption, with phased-down targets extending through 2036. As HFC availability declines, refrigerant costs and maintenance complexity are expected to increase. Learn more about AIM Act requirements:
Upgrading to ultra-low GWP, such as CO2 systems, helps food manufacturing facilities reduce risk while improving energy efficiency.
CO₂ Refrigeration System for Meal Kit Fulfillment Center
Read how CoolSys helped a food fulfillment operation transition to a transcritical CO₂ refrigeration system designed to improve efficiency, reduce environmental impact, and enhance system reliability.
03. Process Cooling Inefficiencies
Food manufacturing processes often require process cooling for production lines, packaging equipment, and storage areas. These systems frequently operate continuously and are rarely optimized after installation.
Improving process cooling efficiency involves optimizing chilled water temperatures, improving heat exchange efficiency, and aligning cooling loads with production schedules.
These improvements often yield meaningful energy savings in food manufacturing without requiring major capital investments.
04. Ventilation and Air Handling Overspending
Ventilation systems in food manufacturing facilities must meet strict sanitation and air quality requirements. However, many facilities operate ventilation systems at maximum capacity even when production levels do not require it.
Optimizing ventilation rates, adjusting scheduling, and implementing demand-controlled ventilation strategies can significantly reduce energy consumption while maintaining compliance and safety requirements.
According to the U.S. Environmental Protection Agency, improving ventilation efficiency can significantly reduce energy consumption in industrial facilities.
Discover Hidden Food Manufacturing Energy Savings
Most food manufacturing facilities uncover 15–25% energy savings opportunities during an energy assessment
05. Compressed Air Systems
Compressed air systems are widely used in food manufacturing for packaging, automation, and cleaning processes. These systems are often inefficient due to leaks, improper pressure settings, and aging compressors.
The U.S. Department of Energy estimates that compressed air systems can account for 10–30% of industrial electricity use.
Improving compressed air efficiency often delivers immediate cost savings.
06. HVAC Systems and Facility Cooling
Food manufacturing facilities often require additional HVAC systems to maintain temperature and humidity control. Over time, these systems become inefficient due to operational changes and aging equipment.
Optimizing HVAC systems through control improvements, scheduling adjustments, and maintenance optimization often produces meaningful energy savings.
Lighting systems operate continuously in many food manufacturing environments. Upgrading to LED lighting reduces energy consumption and improves visibility.
According to the U.S. Department of Energy, LED lighting can reduce lighting energy consumption by up to 75 percent.
08. Energy Supply Resilience for Food Manufacturing
Food manufacturing facilities require reliable energy to protect product integrity. On-site energy generation and combined heat and power systems improve reliability and reduce costs.
Combined heat and power systems are particularly effective in food manufacturing facilities because of the simultaneous thermal and electrical loads.
According to the U.S. Environmental Protection Agency, CHP systems can reach efficiencies up to 80 percent.
When Should Food Manufacturing Facilities Conduct an Energy Assessment?
Food manufacturing facilities benefit from an energy assessment when energy costs increase, production expands, equipment ages, or sustainability goals evolve.
Portfolio-wide assessments often identify significant savings opportunities across multiple facilities.
Start Reducing Energy Costs in Your Food Manufacturing Facilities
Discover how much energy your food manufacturing facilities can save with a CoolSys energy assessment.
