Stored hydro isn't the realm of vortex turbines because they cannot be reversed, and because they excel at high volume/low drop. Pumped storage prefers high dro

Stored hydro isn't the realm of vortex turbines because they cannot be reversed, and because they excel at high volume/low drop. Pumped storage prefers high drop/low volume because losses from evaporation and seepage don't scale with height. Vortex turbines are for tapping a creek or the canals left behind by a pre-steam ways mill that would otherwise be uneconomical to harvest, or where ecological impact of other installations would be too high.