The real cost of running a confectionery line: energy, labour and the cost per kilo nobody quotes

The purchase price of a line is a one-time number; energy, labour and waste are paid every shift for ten years. A cheaper machine that needs an extra operator and burns more gas per kilo is the expensive one by year two. The number that matters is cost per kilo of finished product, and almost no quote shows it.

Three costs dominate running a confectionery line: energy (heat to cook, cold to set), labour (operators per shift), and yield (what you sell vs what you made). A line is genuinely cheaper only if it wins on those, not on the sticker.

Energy: cooking heat and cooling cold

Energy goes two ways: heat to cook and refine, and cold to set and store. Vacuum cooking and well-insulated cookers cut the heat side; an oversized or leaky cooling tunnel and refrigeration that runs non-stop dominate the cold side. Compressed air is the quiet third — blowers, valves and depositors run on it, and a leaking air system can add a meaningful slice to the bill. Energy-efficient cooking stations and a right-sized cooling tunnel are running-cost decisions, not just throughput ones.

Labour: operators per shift

Labour is set at purchase, not at hiring. A manual line needs hands at every station — depositing, demoulding, feeding, packing; an automated line with synchronised drives and recipe memory runs the same output with one or two operators. Over a decade the difference between three operators and one, across shifts, dwarfs the price gap between a manual and an automated line. Ask how many people a line needs to hit its rated output, not just what it costs.

Yield and waste: the cost nobody lists

Yield is the hidden cost. Every demoulding reject, every off-temper batch, every gram of over-deposit and every product that misses its shelf life is product you paid to make and cannot sell. A line running at a few percent reject on hundreds of kg a shift quietly loses tonnes a year. Stable temper, accurate dosing and controlled cooling are yield tools, and yield is usually the biggest line in the real cost per kilo.

The sticker price is paid once; energy, labour and waste are paid every shift — compare lines on cost per kilo, not on the quote.

How to compare lines on running cost

Ask each supplier for energy use per kilo, operators per shift to hit rated output, and expected yield on your recipe — then build a simple cost per kilo over the life of the line. A line that costs more up front but uses less energy, fewer people and wastes less product is usually cheaper within a couple of years. The cheapest quote and the cheapest cost per kilo are rarely the same machine.