TOTO's Libella Faucet Series offers EcoPower self-sustaining hydropower technology. This platform increases the faucets' ease of installation, requiring one controller for both single-supply and thermal-supply models. The chrome fittings create their own electricity -- stored in a series of rechargeable capacitors -- every time water spins their small internal turbine. Their predetermined flow rate metes out 0.5 gpm or 0.09 gal. per 10-sec. cycle. The series features both deck- and wall-mount options.