Energy Recovery, Inc. (NASDAQ: ERII) is a clean-technology cleantech leader that designs and manufactures proprietary pressure exchanger devices and high-efficiency fluid-flow equipment. Its core technology captures wasted hydraulic energy from high-pressure industrial processes and redirects it back into the system. The company specializes primarily in large-scale seawater reverse osmosis (SWRO) desalination plants, helping municipal and industrial water facilities drastically lower electricity consumption and cut operational carbon footprints worldwide.