At Tsubame Holdings Group company ELIS (Okayama City, President Jun Kuwahara), the "micro hydroelectric power generation system" (mini hydroelectric power generation) that we have been working on since 2007 is steadily expanding. We have accumulated a lot of achievements through joint development with Nagasaki University and West Japan Fluid Technology Laboratory (Sasebo City, Nagasaki Prefecture), and this time we have obtained a new patent, and we are considering expansion in Japan and overseas. (Excerpt)