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Whey protein production struggles to keep pace with demand

Despite high whey protein prices and strong demand, growing production pressures are prompting questions about pricing sustainability, processing capacity, and alternative dairy options.

At a glance:

• Whey protein prices have increased amid surging demand, but rising inventories raise concerns about market sustainability.
• Limited whey supply and processing capacity are driving investment as manufacturers struggle to meet demand.
• High costs spur food manufacturers to explore alternative dairy proteins, including milk protein concentrates.

“The whey protein market has experienced an extraordinary run, particularly for higher-protein products,” Alyssa Badger, vice president of global operations and insights at HighGround Dairy, a Chicago-based financial consultancy specialised in the dairy industry, told Ingredients Network.

Whey protein prices have almost tripled in a year. According to HighGround Dairy, whey protein isolate (WPI90) is trading near a record $14.30/lb (€12.70), up from approximately $8.60/lb (€7.70) two years ago and $4.25/lb (€3.80) three years ago. Whey protein concentrate (WPC80) prices have also reached historic highs but have since retreated, while WPI90 remains exceptionally expensive.

However, the latest data from the United States Department of Agriculture (USDA) raise interesting questions over whey protein production and inventory. WPI90 production declined 6.1% year over year in August 2026, yet inventories were nearly 21% higher than a year ago. Meanwhile, production of WPC containing 50–89.9% protein increased 10.1%, with inventories up nearly 12%.

Lower-protein concentrates, on the other hand, are experiencing the opposite trend, with both production and inventories declining. “The market is clearly not moving uniformly across products,” said Badger.

Demand for high-protein ingredients remains strong, but manufacturers will have a breaking point on price. Analysts are closely watching to see whether these elevated inventories are an early indication that buyers are pushing back against record prices.

Surge in whey demand

Consumer interest and awareness of protein are driven by the growing recognition of its nutritional benefits and how these align with their lifestyle and dietary needs.

“Whey protein is particularly well positioned because of its high-quality protein,” Alexander Roth, communication officer at the European Whey Processors Association (EWPA) told this publication.

Proteinmaxxing, a trend popularised on social media platforms, has contributed to the rapid growth of high-protein products, impacting whey demand. The USDA’s updated dietary guidelines also added to the momentum, encouraging consumers to prioritise protein foods at every meal.

Whey has moved beyond traditional food applications. Protein now features in sports, specialised and medical nutrition categories; infant formula; and everyday food products including beverages, yoghurt, ice cream, bakery products and snacks.

“Processors are responding by making better use of the whey generated by cheese production and by developing products for increasingly specialised applications,” said Roth.

A sustainable growth story?

Suppliers are looking to increase their production capacity. In October 2026, Denmark-based dairy giant Arla announced it was investing €63 million in skyr and cottage cheese to meet growing demand for protein-rich foods. Similarly, Dutch dairy supplier FrieslandCampina announced an investment programme of more than €90 million in May 2026 to expand high-value whey protein capacity across several production sites.

“The challenge is that manufacturing capacity was not prepared for such a rapid increase in demand,” said Badger. Buyers are competing for high-protein whey ingredients, particularly WPI90, and securing desired quantities at commercially viable prices has become increasingly difficult.

The biggest challenge? Increasing production of a by-product

“One of the biggest challenges is that whey is a byproduct of cheese manufacturing,” said Badger. Europe is the world's largest cheese-producing region and therefore the world's largest producer of whey.

Building or expanding a facility requires substantial capital, specialised equipment, access to sufficient whey streams and confidence that demand will support the investment over the long term.

“You cannot simply increase whey production because demand for protein is strong,” Badger added.

Manufacturers need the underlying cheese production, followed by the specialised processing equipment capable of turning that whey into higher-protein ingredients. Purchasing further ahead, absorbing higher costs or exploring alternative protein ingredients are strategies that manufacturers are starting to adopt.

Could milk protein concentrates be a substitute for whey protein?

Analysts expect the whey protein market to remain relatively structurally tight in the near term, particularly for WPI90. However, they express caution about assuming today's record prices are sustainable indefinitely. “The inventory figures we are seeing suggest the market may not be as physically tight as current prices imply,” Badger said.

“One area worth watching is reformulation into alternative dairy proteins, particularly milk protein concentrates (MPC),” Badger added. Unlike whey proteins, MPC can be produced directly from milk without relying on cheese manufacturing. Although not an ideal substitute in every application, the price difference is prompting manufacturers to explore MPCs as a possible option.

Flexibility will also be increasingly important. “Processors need to be careful about making long-term investment decisions based solely on today's exceptionally high prices,” said Badger. Diversifying protein sources, adjusting formulations or reconsidering protein inclusion levels can help manage changes in demand and pricing across the market.

“Protein demand is not going away, but the ingredients used to meet that demand could look quite different a few years from now,” she added.

Building a valuable protein supply

Focusing on meeting rising protein while keeping products affordable and maintaining a sustainable whey supply is vital. “The key is to continue making the best possible use of whey as a valuable resource within the dairy sector,” said Roth.

Manufacturers will need to continue investing in processing technologies to transform resources into high-quality protein and other sought-after ingredients.

“The challenge is building capacity that makes sense not just for the current market, but for the market processors expect to serve over the next decade,” Badger added.