Whey Production — Whey production refers to the total quantity of whey generated during the processing of milk into cheese, casein, yogurt, and other dairy products over a specified period, typically measured in metric tonnes. Whey is the liquid by-product remaining after milk has been curdled and strained and contains proteins, lactose, minerals, and water. This indicator measures the volume of whey produced by the dairy industry before it undergoes further processing into products such as whey protein concentrate (WPC), whey protein isolate (WPI), whey powder, lactose, or other dairy ingredients. It serves as an important indicator of dairy processing activity and the availability of whey as a raw material for food, beverage, nutrition, and animal feed industries.
Global whey production subsequently increased to 3.28 million tonnes in 2021 and reached a period high of approximately 3.50 million tonnes in 2022, followed by a slight decline to 3.30 million tonnes in 2023. Overall, the data indicate a gradual upward trend in global whey availability, supported by sustained dairy processing and cheese manufacturing activities.
Whey production is closely linked to global milk production, cheese and casein manufacturing, dairy processing capacity, and the utilization of whey as a commercially valuable dairy by-product. The increase in whey availability has supported the production of whey protein concentrate, whey protein isolate, whey powder, lactose, and other specialized dairy ingredients. Growing demand for protein-rich foods and beverages, sports nutrition products, functional foods, and infant nutrition has further increased the commercial importance of whey and encouraged greater utilization of available whey streams.
Technological advancements in membrane filtration, separation, concentration, and drying have also improved the efficiency of whey processing and enabled dairy processors to convert a larger proportion of whey into higher-value ingredients. Major dairy-producing regions, including Europe, North America, Asia, Oceania, and South America, continue to contribute significantly to global whey availability through established milk-processing and cheese-production industries.
The upward movement in global whey production also reflects the broader focus of the dairy industry on resource efficiency and waste reduction. By converting whey into protein, lactose, and other value-added ingredients, dairy processors can improve raw-material utilization while responding to growing demand for functional and high-protein nutritional products. Overall, global whey production increased by approximately 11.5% between 2015 and 2023, demonstrating a generally expanding supply base and reinforcing whey's strategic importance within the global dairy ingredients value chain.