Cost Per Ton

Cost Per Ton in Grain Milling and Feed Handling: What Drives It and How to Quote

What actually moves cost per ton in a mill or feed plant, how to build a defensible quote, and the estimating errors that quietly erase margin.

In grain milling and feed handling, raw material dominates the cost stack, usually 70 to 85 percent of the delivered cost per ton. When corn sits at 200 dollars per metric ton and inclusion is 60 percent of a ration, that single ingredient contributes 120 dollars per ton before you touch a motor. Because material swamps everything else, a 1 percent error in ingredient pricing or shrink outweighs a 10 percent error in labor. Start every quote from a locked bill of materials priced at delivered cost, freight and fuel surcharge included, not spot commodity screens that ignore basis.

Shrink is the cost line estimators forget. Moisture removed in drying and unaccounted handling loss both consume tonnage you bought but cannot bill. If you buy 40 t of 18 percent corn and sell against a 15 percent moisture basis, roughly 1.4 t evaporates, and at 200 dollars per ton that is 280 dollars of pure loss on one lot. Add 1 to 2 percent invisible handling loss through transfers and dust, and shrink alone can reach 2 to 4 percent of material cost. Use the Yield Loss and Moisture Loss calculators to convert shrink into dollars before you set price.

Energy is the largest controllable conversion cost, typically 4 to 9 dollars per ton for milling and grinding. At 13.75 kWh per ton and 0.11 dollars per kWh, that is about 1.51 dollars per ton for the mill motor alone; add aspiration, conveying, and pelleting and the plant total climbs to the 5 to 8 dollar range. Pelleting doubles specific energy versus mash, so a pelleted feed carries 3 to 5 dollars per ton more than the same mash formula. Run Energy Per Ton against your submeter and current rate so the quote reflects your actual grind, not a nameplate assumption.

Labor and machine time convert to cost per ton through throughput, which is why capacity utilization matters more than headcount. A crew costing 180 dollars per hour across a line running 6.0 t/h is 30 dollars per ton; push that line to 9.0 t/h and the same crew drops to 20 dollars per ton. Packaging is the labor-heavy step: bagging 25 kg sacks at 20 bags per minute versus bulk load-out changes labor cost per ton by 8 to 15 dollars. Use Mill Throughput and Packaging Rate together so your labor rate divides by a real, demonstrated tons-per-hour, not an optimistic one.

Overhead and fixed cost recovery get buried and then blow up the quote. Depreciation, maintenance, insurance, dust and safety compliance, and quality lab time commonly add 6 to 12 dollars per ton. Maintenance alone on hammers, screens, and roll corrugation runs 1.5 to 3 dollars per ton, and a screen change that drops throughput 20 percent quietly raises every per-ton cost above it. Model a screen swap with the Screen Change Impact calculator so the throughput hit lands in the quote rather than in your year-end variance report.

Build the quote as a layered stack, not a single markup. Layer one is delivered material from the locked BOM. Layer two is conversion: energy per ton plus labor per ton at demonstrated throughput. Layer three is loss: shrink and yield loss in dollars. Layer four is overhead and fixed recovery. Sum those, then add margin on top, typically 4 to 10 percent for commodity feed and higher for specialty or certified product. Cost Per Ton assembles these layers so nothing hides inside a rounded number, and you can defend each line to a buyer.

The most common estimating errors are predictable. Quoting off nameplate throughput instead of actual overstates capacity and understates labor per ton by 20 to 40 percent. Pricing material at spot instead of delivered ignores 10 to 25 dollars per ton of basis and freight. Forgetting shrink understates cost by 2 to 4 percent of material. And ignoring the throughput penalty of fine grinds or frequent screen changes hides 1 to 3 dollars per ton. Each of these is a single number you can pull from a calculator rather than guess.

Reprice on a cadence, because the material layer moves weekly. Lock ingredient costs to a dated quote, set a validity window of 7 to 30 days on any bid, and attach a fuel or commodity escalator above a threshold so a corn rally does not eat your margin mid-contract. Recheck energy and labor per ton quarterly against demonstrated throughput. A quote that names its assumptions, delivered material price, tons per hour, kWh per ton, and shrink percent, is one you can defend line by line when a buyer pushes back.

Published 2026-07-01.