In its simplest form, solar thermal systems consist of collectors that absorb sunlight and convert it into heat. Photovoltaic energy storage leverages principles of solar energy conversion and electrical storage. This allows for energy use even when sunlight is not. The AES Lawai Solar Project in Kauai, Hawaii has a 100 megawatt-hour battery energy storage system paired with a solar photovoltaic system. Sometimes two is better than one. This process employs various methodologies, primarily involving the utilization of materials capable of storing thermal energy in the form of heat. The increasing global energy demand and the transition toward sustainable energy systems have highlighted the importance of energy storage technologies by ensuring efficiency, reliability, and decarbonization. Researchers are designing new technologies, from reinvented batteries to compressed air and spinning wheels, to keep energy in reserve for the lean times. Sandia National Laboratories researchers Leo Small, back.
