When Onnest releases its first trout into its tanks a few years from now, it will receive oxygen and heat from the nearby CONVEY hydrogen facility.
Land-based aquaculture has become an interesting alternative to sea-based fish farming due a reduced environmental impact. The desire to avoid the spread of sea lice – as well as fish escaping into the wild – has prompted fish farmers to explore the potential of onshore tank systems. However, land-based aquaculture comes with its own challenges. The need for oxygen to aerate the water and the need for energy to produce heat and maintain optimal temperatures are among the key issues. The aquaculture enterprise Onnest has decided to reduce its environmental impact by receiving oxygen and heat from the nearby CONVEY hydrogen facility. The hydrogen production process generates oxygen and heat as side products.
“Even though we recirculate the water, we still need to add water, which must be heated to 14 degrees Celsius, the temperature that ensures optimal growth for the fish. And oxygenating the water is also essential. But by sourcing oxygen and heat from the CONVEY hydrogen facility, we avoid burdening the environment with the need to produce these inputs by other means,” explains Samuel Muren, CEO of Onnest.
Onnest is partner in the CONVEY project.
