The daily operating cost of a 10-cubic-meter cold storage unit mainly consists of electricity charges, maintenance fees and labor costs. The core influencing factors are the type of cold storage (temperature demand), electricity policies and equipment status. The following is a specific calculation based on the actual situation in Changzhou area:

I. Core Costs: Electricity Charges (accounting for over 90%)

Electricity charges are influenced by both the power consumption of the units and the electricity price. The time-of-use electricity price policy for industrial and commercial use in Changzhou in 2025 is an important variable, and the electricity charges for different types of cold storage facilities vary significantly

(1) Power consumption reference: Classified by the temperature of the cold storage

Fresh-keeping cold storage (0℃-5℃

The average daily power consumption is 5 to 11.6 kilowatt-hours, with an intermediate value of 8 kilowatt-hours. Due to the stable load, the variable frequency unit can operate at a low speed. If a fixed-frequency unit is used, it needs to be started and stopped frequently, and the power consumption will increase by 25% to 30% (about 10 kilowatt-hours).

Refrigerated cold storage (-15℃- 18℃

The average daily power consumption is 8 to 12 kilowatt-hours, with a regular value of 10 kilowatt-hours. The cooling capacity demand in this scenario fluctuates greatly. The variable frequency unit matches the load through stepless speed regulation, saving 30% energy compared to the fixed-frequency unit (about 14 degrees for the fixed-frequency unit).

Low-temperature cold storage (-20℃- 25℃

The average daily power consumption is 12 to 15 kilowatt-hours, with a typical value of 13 kilowatt-hours. In low-temperature environments, compressors need to operate for long periods of time. The start-stop loss of fixed-frequency units accounts for a higher proportion, with power consumption reaching up to 18 kilowatt-hours (variable-frequency units save 33% of energy).