Energy Recovery, Inc. (Nasdaq: ERII), headquartered in San Leandro, California, is a global leader in energy-efficient pressure exchanger technology for industrial fluid flows. Its flagship product, the PX Pressure Exchanger, uses a ceramic rotor to capture and transfer pressure energy, reducing energy consumption by up to 60% in SWRO desalination. Over 35,000 PX units installed worldwide, producing an estimated 36 million cubic meters of freshwater per day, reducing CO2 emissions from desalination by over 19 million tons annually. Latest product, the PX Q650 (launched March 2026), delivers up to 99% peak efficiency. Also serves wastewater treatment (MLD/ZLD) applications. 30-year design life, no scheduled maintenance.