DayStar Technologies, Inc., a development stage company, engages in the development, manufacture, and marketing of solar photovoltaic products to the grid-tied and ground-based photovoltaic markets. It intends to commercialize monolithically integrated copper indium gallium selenide modules on glass laminate substrates for high-voltage grid-connected utility and commercial market applications, including utility power plants, commercial building roof tops, and smaller residential roof tops. The company was founded in 1997 and is headquartered in Union City, California.