System Energy Comparison

Compare annual energy use, cost savings, CO2 reduction, and payback for refrigeration upgrades.

Total cooling capacity of the system in BTU/hr.
BTU/hr
Total compressor run hours per year. Refrigeration: typically 4000-8760 hrs.
hrs/yr
Energy Efficiency Ratio of existing system. EER = BTU/hr per watt. Old systems: 6-9, average: 9-12.
BTU/Wh
EER of the proposed replacement or upgrade. New high-efficiency: 12-18.
BTU/Wh
Average blended electricity rate from your utility bill.
$/kWh
Total cost of the equipment upgrade for payback calculation. Enter 0 to skip.
$

Results

Current Annual kWh:
Annual electricity consumption of the current system.
-kWh/yr
Proposed Annual kWh:
Annual electricity consumption of the proposed system.
-kWh/yr
Annual kWh Savings:
Difference in annual energy consumption between current and proposed.
-kWh/yr
Annual Cost Savings:
Dollar savings per year from reduced electricity consumption.
-$/yr
CO2 Reduction:
Estimated annual CO2 reduction using EPA eGRID average of 0.86 lbs CO2/kWh.
-lbs CO2/yr
Simple Payback:
Time to recover upgrade cost from energy savings alone.
-years
Reference: EPA ENERGY STAR guidelines. DOE commercial refrigeration efficiency standards. EPA eGRID emission factors.