How do you calculate energy cost per ton?

Multiply process load by runtime by electricity rate to get total energy cost, then divide by tons processed. At 185 kW for 8 hr at $0.11/kWh over 120 tons, total cost is $162.80 and energy cost per ton is about $1.36.

What is a good energy cost per ton for a feed mill?

Whole-mill electrical energy commonly lands around 10-25 kWh per ton depending on grinding fineness and pelleting, which at $0.11/kWh is roughly $1-3 per ton. The example's $1.36/ton sits in a competitive range for a coarse grind.

How much energy did the example run actually use?

185 kW over 8 hours is 1,480 kWh of process energy. At $0.11/kWh that's $162.80 total, or $20.35 per operating hour across the run.

Why measure load instead of using motor nameplate?

Nameplate horsepower is the rating, not the draw — motors rarely run fully loaded. A clamp meter or power monitor gives the real kW, so the example's 185 kW reflects actual demand, not the sum of nameplate ratings.

Does fineness of grind change energy per ton?

Strongly. Grinding to a finer particle size raises specific energy substantially, so a finer screen on the same tonnage pushes both kWh and dollars per ton up. That's why per-ton energy is a useful screen-wear and die-wear indicator.

How can I lower my energy cost per ton?

Sharpen or right-size hammermill screens and hammers, maintain pellet dies, shift load to off-peak rate windows, fix airflow on aspiration fans, and keep throughput high so fixed motor draw is spread over more tons.

Grain Milling, Dry Bulk Food & Feed Handling calculator

Energy Per Ton Calculator

Energy Per Ton converts a milling or dry-bulk handling line's electrical demand, runtime, and utility rate into the energy cost of pushing one ton through the process. Plant managers, cost accountants, and continuous-improvement engineers use it to benchmark grinding, pelleting, and conveying energy against tons produced, since electricity is often the largest variable conversion cost in a feed mill. Tracking dollars per ton exposes whether a hammermill is running dull screens, whether a pellet die is wearing, or whether off-peak scheduling could shave the bill. It ties motor load directly to throughput so energy waste shows up in the cost per ton rather than getting buried in a monthly utility invoice.

What this calculator does

Estimate energy cost per ton for milling, conveying, grinding, pelleting, mixing, or bagging using connected load, runtime, energy rate, and processed tons.
Use it when operations or finance needs to compare energy intensity by mill line, product, grind size, pellet run, or conveying route.
It computes total process energy cost from load, runtime, and rate, then divides by tons processed to give energy cost per ton.

Formula used

Energy cost = measured process load × energy measurement runtime × blended electricity rate
Energy cost per ton = energy cost ÷ processed dry bulk tons

Inputs explained

Measured process electrical load:
Energy measurement runtime:
Blended electricity rate:
Dry bulk tons processed:

How to use the result

Use it to benchmark grinding or pelleting energy, evaluate efficiency projects, or build accurate per-ton cost standards for quoting.
It uses an average load over the runtime; it won't capture peak-demand charges, power factor penalties, or startup surges that inflate the real bill.

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.
The producer price index for steel mill products stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. Quotes priced off last quarter's material cost miss this move.
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 17,154 machine shops establishments employing about 223,303 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate energy cost per ton? Multiply process load by runtime by electricity rate to get total energy cost, then divide by tons processed. At 185 kW for 8 hr at $0.11/kWh over 120 tons, total cost is $162.80 and energy cost per ton is about $1.36.
What is a good energy cost per ton for a feed mill? Whole-mill electrical energy commonly lands around 10-25 kWh per ton depending on grinding fineness and pelleting, which at $0.11/kWh is roughly $1-3 per ton. The example's $1.36/ton sits in a competitive range for a coarse grind.
How much energy did the example run actually use? 185 kW over 8 hours is 1,480 kWh of process energy. At $0.11/kWh that's $162.80 total, or $20.35 per operating hour across the run.
Why measure load instead of using motor nameplate? Nameplate horsepower is the rating, not the draw — motors rarely run fully loaded. A clamp meter or power monitor gives the real kW, so the example's 185 kW reflects actual demand, not the sum of nameplate ratings.
Does fineness of grind change energy per ton? Strongly. Grinding to a finer particle size raises specific energy substantially, so a finer screen on the same tonnage pushes both kWh and dollars per ton up. That's why per-ton energy is a useful screen-wear and die-wear indicator.

Last reviewed 2026-05-12.