What Affects Feed Mill OPEX?

Grinding and pelleting are the two large electrical consumers. Energy per tonne rises steeply with grinding fineness, so an aquafeed line grinding below 250 microns consumes far more than a poultry mash line at a coarser distribution.

Die specification, roller adjustment, conditioning quality, conveying design and motor efficiency all move the number. Measure kWh per tonne by product family, not as a plant average — the average hides the products that are actually expensive to make.

In extrusion plants, drying is the dominant thermal load and often the largest single operating cost after ingredients. Dryer efficiency, insulation, heat recovery and boiler fuel choice change OPEX more than almost any other decision.

Steam cost also matters in pelleting: good conditioning improves durability and throughput, so an undersized boiler quietly costs both quality and capacity.

Dies, rollers, screws, screens, hammers and knives wear as a function of formula abrasiveness, moisture and running hours. High-fibre and high-mineral formulas consume wear parts noticeably faster.

Availability matters more than unit price: a cheap line with a twelve-week spare part lead time is expensive in downtime. Ask every supplier for wear part price lists, expected life and regional stock before comparing offers.

Labour cost per tonne is set by shift structure and automation depth. Automation reduces headcount and batch-to-batch variability, but it requires maintained competence, calibration discipline and a maintenance culture.

In markets with low labour cost the automation case is usually made on consistency, traceability and audit readiness rather than on headcount alone.

Ingredients are 70–85 percent of feed cost in most commercial operations, so the mill's ability to buy well outperforms almost every process saving.

Storage days, intake speed, laboratory capability and formulation flexibility — the ability to substitute ingredients on nutrient value rather than habit — are what convert market movements into margin.

Bagging materials, bagging labour and distribution can quietly become the largest controllable cost outside ingredients, especially across islands, long inland routes or fragmented customer bases.

Bulk load-out where the customer base allows it typically removes both a cost and a bottleneck.