The document describes several solar-powered reverse osmosis desalination systems produced by Vertence Technologies for producing fresh drinking water. The systems, trademarked MiD, MeD, and MaxD, are suitable for small islands, ships, and emergencies and can produce between 1-50 tons of fresh water per day. The systems use reverse osmosis powered by photovoltaic solar panels to remove over 90% of salts and microorganisms from brackish or seawater in a low energy and economical process.