How do you calculate refrigeration energy cost?

Multiply metered energy use by the cost per kWh and by the share of load assigned to the product, then add fixed demand charges. With 100 kWh at $45, an 80 percent share and a $250 adder, the allocated cost is $3,600 and the total is $3,850.

Why allocate only a share of the refrigeration load?

A central refrigeration plant cools many products at once, so each SKU or line should carry only its fair fraction. The 80 percent share in the example means this product is responsible for most, but not all, of the metered load.

What is the fixed demand or utility adder?

It is the portion of the electric bill driven by peak demand charges or fixed utility fees rather than consumption. It must be included because it accrues even if usage is steady, adding $250 in the example.

What is a good refrigeration cost per energy unit?

There is no universal target, but the per-unit figure of $38.50 in the example reflects the blended effect of rate, allocation and the demand adder. Track it over time and against efficiency upgrades rather than to an absolute benchmark.

Does this handle time-of-use electricity rates?

Not directly. It uses a single blended rate, so for a time-of-use tariff you should run separate calculations for peak and off-peak energy or enter an effective blended rate.

How do I get the energy use figure?

Read it from a submeter on the refrigeration system, or convert ton-hours of cooling to kWh using the system's coefficient of performance. Submetering gives the most defensible allocation.

Dairy & Frozen Food Manufacturing calculator

Refrigeration Energy Cost Calculator

Refrigeration Energy Cost calculates what cooling actually costs for a given dairy or frozen product, line or period, including the slice of plant-wide refrigeration load it is responsible for. Plant engineers and cost accountants use it because refrigeration is often the single largest electrical load in a cold-chain facility, and spreading that cost fairly across SKUs is essential for accurate margins. The calculator multiplies measured energy by the utility rate and an allocation share, then adds fixed demand charges that hit the bill regardless of usage. The result tells you whether a hardening tunnel or blast freezer is carrying its true energy weight.

What this calculator does

Estimate refrigeration energy cost for chilled dairy rooms, blast freezers, spiral freezers, cold storage, or frozen-food tunnels.
Use it when refrigeration energy cost in dairy and frozen food manufacturing is being put through a dairy and frozen food manufacturing weighted-cost review.
It computes the allocated refrigeration energy cost as energy times rate times assigned share, then adds a fixed demand or utility charge to get the total cooling cost.

Formula used

Allocated refrigeration energy cost = refrigeration energy use or load × cost rate × assigned share
Total refrigeration energy cost = allocated energy cost + fixed demand or utility adder

Inputs explained

Refrigeration energy use for the period:
Electricity or refrigeration cost rate:
Share of load assigned to this product or line:
Fixed demand charge or utility adder:

How to use the result

Use it when allocating refrigeration cost to a product, line or shift, or when evaluating an energy-efficiency project against the demand-charge baseline.
It assumes a flat cost rate and a fixed allocation share, so it will misstate cost under time-of-use tariffs or when load share shifts with ambient temperature and product mix.

Current U.S. benchmarks

As of Apr 2026, industrial electricity averages 8.7 cents per kWh across the U.S. (EIA), up 5.5% from a year earlier. State averages range widely, so plants should confirm against their own tariff.
Industrial natural gas averages $4.9 per Mcf (EIA, Apr 2026), down 7.7% from a year earlier, with industrial electricity at 8.66 cents per kWh. Process heating and refrigeration budgets track both.
The U.S. has 31,130 food manufacturing establishments employing about 1,707,316 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate refrigeration energy cost? Multiply metered energy use by the cost per kWh and by the share of load assigned to the product, then add fixed demand charges. With 100 kWh at $45, an 80 percent share and a $250 adder, the allocated cost is $3,600 and the total is $3,850.
Why allocate only a share of the refrigeration load? A central refrigeration plant cools many products at once, so each SKU or line should carry only its fair fraction. The 80 percent share in the example means this product is responsible for most, but not all, of the metered load.
What is the fixed demand or utility adder? It is the portion of the electric bill driven by peak demand charges or fixed utility fees rather than consumption. It must be included because it accrues even if usage is steady, adding $250 in the example.
What is a good refrigeration cost per energy unit? There is no universal target, but the per-unit figure of $38.50 in the example reflects the blended effect of rate, allocation and the demand adder. Track it over time and against efficiency upgrades rather than to an absolute benchmark.
Does this handle time-of-use electricity rates? Not directly. It uses a single blended rate, so for a time-of-use tariff you should run separate calculations for peak and off-peak energy or enter an effective blended rate.

Last reviewed 2026-05-12.