© Jess Loiterton
The company, specialised in nanobubble technology, says the system improves oxygen delivery, reduces production costs all while enhancing fish welfare. According to Moleaer, Freya is the result of several years of development and more than a year of field testing and competitive trials in different aquaculture environments. The company argues that rising sea temperatures and stricter environmental regulations have challenged traditional oxygenation solutions, which often struggle to keep pace.
Freya addresses these challenges with advanced nanobubble technology that delivers over 50 kilogram per hour of oxygen at more than 85 percent transfer efficiency in a compact, low-energy and submersible units. This enables operators to cut oxygenation costs and energy consumption.
Field trials in Norway and Chile
Field trials have demonstrated that Freya can reduce oxygen usage by up to 41 percent and lower oxygenation-related energy use by up to 60 percent, strengthening oxygen management in both daily operations and emergency conditions.
“The industry has been looking for a solution that improves oxygen delivery while lowering energy, operating costs and protecting fish welfare. Freya delivers on all counts, combining proven performance, lower oxygenation energy use, and a flexible, fully submersible design that works in virtually any aquaculture environment,” said Warren Russell, chief commercial officer at Moleaer, in a press release.
Trials with Salmar Innovanor in Norway showed Freya doubled dissolved oxygen (DO) levels during harvest, allowing more intensive crowding without compromising welfare and improving fish processing quality. Maintaining DO in high summer temperatures had been a challenge, but with Freya, SalMar Innovanor has been able to fully utilise its waiting pens even under warm conditions.
In Chile, Freya was tested in net pens against other industry solutions, achieving reductions in oxygen usage while maintaining higher dissolved oxygen levels, improving fish welfare and preventing mortalities.
New commercial agreements
Freya’s rapid adoption includes new commercial agreements, including Salmon Evolution, a large land-based salmon farm, which selected Freya for emergency oxygenation across twelve tanks at its Indre Harøya facility. Chosen after competitive testing, the system will provide rapid, reliable oxygen stabilisation to maintain welfare and production efficiency during high-demand events.
Moleaer says the findings point to a broader shift away from traditional systems and diffusers, which it argues lack the efficiency and responsiveness required in modern aquaculture. The company’s Freya system uses proprietary nanobubble technology to create microscopic bubbles that remain suspended longer, allowing oxygen to be delivered more effectively than with conventional methods. Moleaer claims this approach provides more precise oxygenation while reducing gas and energy use, and that the system’s design allows it to be deployed across a wide range of configurations.
