Darigold, Actus Nutrition strike dairy protein partnership in Pacific Northwest
Darigold handed Actus Nutrition a Jerome milk protein plant while keeping Sunnyside in house, tying Pacific Northwest milk to higher-value whey and specialty proteins.
Darigold and Actus Nutrition have split control of two Pacific Northwest protein assets in a deal that sharpens who owns the high-value end of the dairy chain. Actus will buy and operate Darigold’s milk protein plant in Jerome, Idaho, while Darigold keeps its Sunnyside, Washington, facility and supplies sweet whey powder and higher-value whey ingredients to Actus under a long-term commercial agreement.
The structure tells you exactly where the margin chase is headed. Actus gets more dependable access to milk proteins and whey streams, and Darigold keeps its farmer-owners plugged into specialty ingredients without having to build every downstream processing step itself. In dairy, that is the difference between selling volume and controlling functionality, and functionality is where protein ingredients keep gaining value.
Actus says it is the largest manufacturer of whey and milk proteins in North America, with products that include PRObev clear whey protein, CasPRO casein and caseinate, lactoferrin, alpha-lactalbumin, and milk fat globule membrane ingredients. The company, formerly Milk Specialties Global, rebranded to Actus Nutrition in October 2024 after Butterfly Equity acquired it in 2023. At the time of the rebrand, Actus said it had about $1.5 billion in annual revenue and had been growing at a double-digit CAGR over five years. That is the kind of balance-sheet backing and scale that makes a supply agreement like this more than a simple plant transfer.
Darigold, the marketing and processing subsidiary of the Northwest Dairy Association, brings the milk side of the equation. The cooperative says it is owned by nearly 300 family-owned farms across Washington, Oregon, Idaho and Montana, with roots going back to 1918, when the United Dairymen’s Association of Washington was founded in Lynden, Washington. Darigold has been reshaping its processing footprint as well. Its new Pasco, Washington, plant opened in 2025, after farmer-owners approved the project in 2021 and construction began in 2022.
That backdrop makes the Actus deal easier to read. Darigold is not stepping away from ingredients; it is choosing a structure that lets it participate in specialty protein growth while leaning on a partner built for whey, casein and other nutrition ingredients. Actus, meanwhile, tightens its grip on upstream supply and adds another layer of control over specialty protein output in the Pacific Northwest. For dairy processors and ingredient buyers, the message is plain: the battle is moving from bulk milk handling to who can secure, process and monetize the most valuable protein streams.
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