Japan Energy Fund has invested in Natel Energy through its Decarbonized Tech Fund managed by Japan Energy Capital.
Natel Energy is a US-based sustainable energy company that offers both a proprietary, fish-safe Restoration Hydro Turbine design and a SaaS solution called HydroForecast.
https://www.japanenergyfund-ventures.com/natel-energy-press-release
Nearly half of the world’s fish species live in freshwater rivers, lakes, and wetlands, even though those represent less than 0.01% of the Earth’s water.
Abe Schneider and Sterling Watson lay out the argument for FishSafe™ turbines in this paper published in The International Journal of Hydropower & Dams, Issue 5.