Solar Power International is powered by the Solar Energy Industries Association (SEIA) and Solar Electric Power Association (SEPA). SPI held its inaugural show in 2003 and was designed to serve and advance the solar energy industry by bringing together the people, products, and professional development opportunities that drive the solar industry and are forging its bright future. Unlike other solar conferences, all proceeds from SPI support the expansion of the solar energy industry through SEIA and SEPA’s year-round research and education activities, and SEIA’s extensive advocacy efforts. SPI’s primary mission is to deliver on the missions of both SEIA and SEPA in a way that strengthens the solar energy industry domestically and globally, through networking and education, and by creating an energetic and engaging marketplace to connect buyers and suppliers.