Solexant Corp. executives will join Gov. Ted Kulongoski on Tuesday to announce the companyâ¿¿s plan to build a $200 million solar module manufacturing plant in Gresham that could one day employ 1,000. The San Jose, Calif.-based solar technology firm is planning a 100,000-square-foot plant that will initially employ 100 before growing to 170 at full production. According to city of Gresham documents, Solexant plans to eventually double the size of the initial plant before growing by another 800 megawatt for a total of 1 gigawatts of annual production. At its full build-out, the plant could employ up to 1,000 people, rivaling the size of the Hillsboro plant operated by Germanyâ¿¿s SolarWorld A.G. News of Solexantâ¿¿s plans first emerged in late May when its request for a $25 million loan came before the Oregon Department of Energy. The location of its planned manufacturing plant, however, remained a question. When Solexant first applied for the state loan in November it listed an address in Fairview where it would occupy an initial 126,000-square-foot building. A news release from the state said the company was considering sites near Gresham and Wilsonville. As of May 20, CEO Damoder Reddy said the company had yet to choose a location. The setting of Tuesdayâ¿¿s news conference settles the question: Kulongoski will join local leaders and company representatives outside Gresham City Hall. Privately held Solexant is a four-year-old, venture-backed developer of what it refers to as â¿¿ultra-thin-film solar cells.â¿ Its technology, first developed at the Lawrence Berkeley National Lab in California, increases solar cell efficiency while reducing manufacturing costs, according to the companyâ¿¿s website. In early June the company said it secured a $41.5 million Series C round of financing, which it will use to help build out the Oregon plant. The round was led by Olympus Capital Partners.