Irish dairy companies poised to benefit from global protein boom
Whey protein, a by-product of cheese and casein manufacturing, has moved from a low-value dairy stream to one of the most commercially significant functional ingredients in food, beverage and nutrition formulation.
The leading position of Irish companies has been acknowledged in a report on the global whey proteins market.
Tirlán, Glanbia Nutritionals, Kerry Group, and Carbery Group are listed among the major participants in the whey proteins market by Analytical Market Research, which values the market at €7.7 billion in 2025, and projected to reach €11.6 billion by 2030.
The Irish milk processors are competing side-by-side with huge multinationals such as Arla Foods Ingredients, Lactalis Ingredients, Fonterra Co-operative Group, and FrieslandCampina Ingredients.
The report says that Fonterra, Glanbia and Lactalis command the broadest global distribution reach, through extensive manufacturing and co-operative networks.
Whey protein, a by-product of cheese and casein manufacturing, has moved from a low-value dairy stream to one of the most commercially significant functional ingredients in food, beverage and nutrition formulation.
The cheese or casein manufacturing generates liquid whey as a co-product. This is filtered, concentrated and dried by integrated dairy co-operatives or specialised ingredient manufacturers, into concentrate, isolate, or hydrolysate form, then sold either directly to large food, beverage and nutrition brand owners, or through ingredient distributors serving smaller regional manufacturers and contract producers.
According to Analytical Market Research, vertical integration, particularly ownership of both the raw milk supply and downstream drying and fractionation, is emerging as a meaningful competitive advantage, insulating manufacturers from the raw milk price volatility which puts pressure on pure-play ingredient processors.
Demand is no longer confined to sports nutrition. Whey protein concentrate, isolate and hydrolysate now appear in infant formula, clinical nutrition products, ready-to-drink beverages, bakery systems and functional foods aimed at aging populations, weight-conscious consumers, and everyday snackers seeking added protein.
The report says:
It identifies three forces pushing sales. Along with a shift toward high-protein diets across developed and emerging markets, there is continued fortification of mainstream food and beverage categories with dairy protein, and thirdly, there is rising demand from clinical and medical nutrition segments serving aging and recovering populations.
Whey protein demand is seen on two distinct commercial tracks. There is commodity-grade whey protein concentrate used for cost-sensitive food and beverage fortification, and there is premium whey protein isolate or hydrolysate grades, feeding sports, clinical and infant nutrition applications, with a higher margin potential.
The predicted total market growth of €3.6 billion over five years would be driven primarily by volume growth in mainstream food and beverage fortification, alongside continued premiumisation in isolate and hydrolysate grades.
Sustained consumer demand for high-protein diets is the single largest driver of sales, reinforced by a broader wellness and preventive-health movement that has pushed protein fortification well beyond traditional sports nutrition into everyday food and beverage categories.
Aging populations across North America, Europe and increasingly East Asia are lifting demand for clinical and medical nutrition formats, built around whey protein's rapid digestibility and complete amino acid profile.
Manufacturers are also benefiting from continued innovation in functional whey ingredients, including powders that dissolve cleanly in beverages, and hydrolysed formats engineered for infant formula and rapid-absorption sports products. Each of these innovations expands the use of whey protein beyond its historical base.
Plant-based protein alternatives continue to compete for shelf space, in categories such as ready-to-drink beverages and meal replacements, though whey retains a functional and sensory advantage in most applications.
Emerging market urbanisation, rising disposable income, and growing gym membership, across Asia-Pacific and Latin America represent the clearest volume opportunity for suppliers willing to invest in regional distribution and certification infrastructure, according to Analytical Market Research.
Clean-label, organic and grass-fed positioning allows premium pricing, while clinical and infant nutrition continue to reward suppliers who can meet the highest regulatory and quality thresholds.
Whey protein suppliers are also increasingly evaluated on the consistency of functional performance and supply security, rather than price alone, which favours integrated dairy co-operatives and manufacturers with diversified sourcing.
North America leads the global whey proteins market with an estimated 36% share, underpinned by mature sports nutrition retail infrastructure, a dense concentration of dairy processing capacity, and high per-capita protein supplement consumption.
Europe follows at around 26%, with the Analytical Market Research report saying the market in Europe is supported by the “strong dairy co-operative infrastructure in Ireland, Germany and France, alongside stringent clean-label and organic demand”.
But Asia-Pacific, with an estimated 23% market share now, is identified as the fastest-growing region for sales, increasing by around 9.2% annually, driven by a rising fitness culture in China, Japan, South Korea, India and Australia, alongside expanding infant and clinical nutrition manufacturing capacity.
Latin America and the Middle East and Africa together account for the remaining 15% of the market, with Brazil and the Gulf states emerging as the most active growth pockets within their respective regions.
