The most critical question being overlooked is: “What is the true total energy cost of the drying step when we account for the inefficiencies of heat-based evaporation, and how can we eliminate it entirely through innovative formulation and process design?”
Most manufacturers accept water removal as an unavoidable necessity, but that assumption hides a real energy cost. Traditional gummy production cooks a slurry of gelatin, sweeteners, and water, then spends hours in drying rooms evaporating the water that was added to make the mix pourable. Water is actually removed twice. The cook evaporates water to concentrate the syrup, and the drying step drives off the remaining moisture so the pieces reach a stable final texture. Both stages carry heat losses, long cycle times, and a need for dehumidification and air handling.
Ignoring this question means missing alternatives that cut utility costs. Cooking and depositing at a higher solids content is the direct lever: pectin gummies, for instance, are commonly cooked to between 75 and 84 Brix before depositing, which leaves less moisture to remove afterward. Switching gelling agents doesn't remove drying, though. Pectin and starch gummies still pass through a curing or stoving step, and a published study dried starch and gelatin confections at 21°C and 35% relative humidity for up to 24 hours. What research has shown can be skipped is the cook. Alginate and pectin cold-set gelation, which sets via calcium instead of heat, produced jelly candies with processing energy roughly 2.7 times lower than conventional pectin jellies, and those pieces still required a 35°C, 72-hour drying step.
Most facilities don't track kWh per kilogram of water removed, or the cost per batch of drying, so the energy picture stays invisible. Published estimates put jellies and gummies at about 25% of the confectionery sector's primary energy use, and on a conventional line the syrup cooking step accounts for the highest energy demand. The more useful question is whether the drying step can be shrunk or skipped.
There is a hard floor on how far water removal can go. The slurry still needs enough water to flow through the depositor, and the finished piece has to reach a target water activity to stay stable on the shelf. Most gummy formulations land between 0.50 and 0.65 water activity. Above 0.70, mold and yeast growth becomes a risk; below 0.50, the pieces harden. The design target is the minimum water content that still deposits cleanly and dries down into that stable range.
Drying costs more than energy. The drying step consumes most of the manufacturing time for gummy confections, which limits line productivity. Every hour a batch sits in a curing room is floor space, labor, and working capital tied up in inventory that hasn't shipped. A manufacturer that shortens the drying window, whether by depositing at higher solids or by tightening humidity control, buys back throughput and square footage on top of the kilowatt-hours saved. For a contract manufacturer, that is often the more immediate return.
Manufacturers should start by asking: What is the minimum water content our recipe truly requires, and can we reformulate with a higher solids content from the start? Less water added means less to boil off in the cook and less to remove in the dryer. Treating water removal as a design variable rather than a fixed necessity opens the largest available lever for cutting energy and cycle time in gummy production.