Small is beautiful in hydroelectric power plant design: Invention could enable renewable power generation at thousands of unused sites

Imagine a hydroelectric power plant barely visible above water that eases the passage of fish in both directions; so simple and cost-efficient that it makes economic sense in sites with a one- or two-meter drop in water height; that could therefore subsidize ecologically motivated dam modifications with local, renewable energy; and which could bring economical, ecological hydroelectric power to developing regions. Researchers at the Technische Universitaet Muenchen did, and developed it: the shaft power plant.

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