Finnforel Ltd is a Finnish business that utilises water recirculation in fish faming and takes advantage of genetics and technology in its business. In Finland, the company has plants in Varkaus, Hollola and Joroinen.

Tesi first invested in the company in 2021 from its Circular Economy investment programme. Water recirculation decreases nutrient loading in bodies of water and is a prime example of a sector-specific, deep knowhow that strengthens domestic production.